Quaderno API Features

https://{{ACCOUNT_NAME}}.quadernoapp.com/api

Welcome to the Quaderno API! You can use our API to access all our features, designed around the idea of making tax management and invoicing easy for small businesses.

The Quaderno API is based on the REST architectural style, and comprised of resources with predictable, human-readable and resource-oriented URLs. We make use of standard HTTP features (HTTP Authentication, Verbs, and Response Codes), understandable by any off-the-shelf HTTP client. We return JSON for everything (including errors!), and expect to receive JSON for all POST and PUT requests.

https://{{ACCOUNT_NAME}}.sandbox-quadernoapp.com/api

If you have any suggestions, tips, or questions that you feel aren't answered here or in our developer site, please get in touch and let us know!

Authentication

curl https://ACCOUNT_NAME.quadernoapp.com/api/invoices.json \
  -u YOUR_API_KEY:x

curl https://quadernoapp.com/api/ping \
  -u YOUR_API_KEY:x

Quaderno uses an API key to authorise all requests, allowing access to the API in combination with the account name in the endpoint URL. You can find your API keys in quadernoapp.com/users/api-keys.

Quaderno expects the API key to be included via HTTP Basic Auth in all API requests to the server. When using curl, it looks like the following:

-u YOUR_API_KEY:x

Using that modifier on curl will send a request with an HTTP header like Authorization: Basic xxxx

Authorization

curl https://quadernoapp.com/api/authorization \
  -u YOUR_API_KEY:x

{
  "identity": {
    "id": "999",
    "name": "Sheldon Cooper",
    "email": "s.cooperphd@yahoo.com",
    "publishable_key":"pk_1111111111111111",
    "href": "http://nippur-999.quadernoapp.com/api/"
  }
}

If you don't know the ACCOUNT_NAME for your target account, you can get it with the authorization API call.

This returns the following as a JSON payload:

Parameter	Description
`id`	An identity, which is not used for determining who this user is within Quaderno. The `id` field should therefore not be used for submitting data within Quaderno's API.
`name`	The user's full name.
`email`	The user's email address.
`publishable_key`	The users's publishable key.
`href`	The custom API endpoint URL for the user, providing the sought-after `ACCOUNT_NAME` between `http://` and `.quadernoapp...`.

Rate Limiting

To make it easier to determine if your application is being rate-limited, or is approaching that level, we have the following HTTP headers on our successful responses:

X-RateLimit-Reset
X-RateLimit-Remaining

There is a limit of 100 API calls per 15 seconds.

We reserve the right to tune the limitations, but we promise to keep them high enough to allow a well-behaving interactive app to do it's job.

If you exceed the limit you will receive a HTTP 429 (Too Many Requests).

Pagination

curl https://ACCOUNT_NAME.quadernoapp.com/api/contacts.json?created_before=42 \
  -u YOUR_API_KEY:x

Pagination is performed with a created_before parameter. This parameter takes an existing object ID value and returns objects listed after the named object, in reverse chronological order.

The HTTP header X-Pages-HasMore indicates whether more records can be fetched by using the same query with a lower created_before.

The HTTP header X-Pages-NextPage contains the URL that should be used to fetch the next page of records. It is only present if more records exist.

Bear in mind that Quaderno paginates GET index results.

You can change the number of objects to be returned with the limit parameter, defaulting to 25. This value is capped at 100 objects.

Errors

We don't usually have any trouble on our end, but when we do we'll let you know!

The Quaderno API uses the following error codes:

Code	Text	Description
`400`	`Bad Request`	Your request may be malformed
`401`	`Unauthorized`	Your API key is wrong, or your user does not have access to this resource
`403`	`Forbidden`	The record requested is hidden for administrators only
`404`	`Not Found`	The specified record could not be found
`405`	`Method Not Allowed`	You tried to access a record with an invalid method
`406`	`Not Acceptable`	You requested a format that isn't JSON
`410`	`Gone`	The record requested has been removed from our servers
`422`	`Unprocessable Entity`	The requested method cannot process for the record in question
`429`	`Too Many Requests`	You're requesting too many records! Slow down!
`500`	`Internal Server Error`	We had a problem with our server. Try again later.
`502`	`Bad Gateway`	We had a different problem with our server. Try again later.
`503`	`Service Unavailable`	We're temporarily offline for maintenance, or you've exceeded the rate limit. Please try again later.
`504`	`Gateway Timeout`	Yep, you guessed it. We'll be back soon!

API Versioning

The Quaderno API is versioned. Our API versions are named for the date the version is released, like 20210701.

A new API version is released when we introduce a backwards-incompatible change to the API. For example, changing a field type or name, or deprecating endpoints.

// Prior to version 20210316 the tax calculation endpoint was called like:
/taxes/calculate?country=US&postal_code=94010

// From version 20210316 taxes are calculated with:
/tax_rates/calculate?to_country=US&to_postal_code=90210&tax_code=standard&amount=10

The worldwide tax panorama changes fast, and so we adapt. While we're adding functionality to our API, we won't release a new API version. You'll be able to take advantage of this non-breaking backwards-compatible changes directly on the API version you're currently using.

Quaderno considers the following changes to be backwards-compatible:

Adding new API resources.
Adding new optional request parameters to existing API methods.
Adding new properties to existing API responses.
Changing the order of properties in existing API responses.
Changing the length or format of opaque strings, such as object IDs, error messages, and other human-readable strings.
Adding new event types.

Your integration should gracefully handle backwards-compatible changes.

Upgrading your API version

curl https://ACCOUNT_NAME.quadernoapp.com/api/contacts.json?created_before=2048 \
  -u YOUR_API_KEY:x \
  -H 'Accept: application/json; api_version=20160602'

If you’re running an older version of the API, upgrade to the latest version to take advantage of new functionality or to streamline responses so the API is faster for you.

All changes are published on the API Changelog.

Upgrading your API version might break your current integration so we recommend testing on Quaderno Sandbox first.

To make the API upgrade definitive or see what version you’re running, visit your Profile → API Keys.

Version sunsetting and backported changes

From time to time, we will sunset old API versions. All Quaderno accounts using that version will be notified with at least one month in advance. Our own Engineering team will provide full support during transition.

Exceptionally, we might be forced to backport backwards-incompatible changes to all API versions for legal or security reasons, as well as for hotfixes needed to adapt to 3rd parties changes. This is the case of the removal of the DELETE /invoices/INVOICE_ID endpoint last summer. These changes receive the same treatment as sunsetting API versions.

Stay informed

To get important announcements regarding version sunsetting, backported changes, and new API versions, please ask you account admin to add a developer role to their account with a valid email so that API announcements reach its audience.

You can also check our What's New being informed of new features and improvements added to the app, and developer and integrations news.

Safely upgrading to API version 20220325

In order to avoid confusion with the variable with the confusing explanations of the notice field in the /tax_rates/calculate response, we've revamped the calculator internally to track the calculation process and return the reasoning behind a result a status code. If you were using the notice in your API automations, you'll need to swap to the status field as notice is no longer returned.

Safely upgrading to API version 20210701

In our goal to make Quaderno compliant with tax rules worldwide, we're going to limit the edition of invoices and credit notes via API as of 1 July.

From that date, an invoice is final (not editable) when any of the following occur:

The invoice has been sent to the customer. All sent invoices are final and cannot be edited.
The invoice has been paid. All paid invoices are final and cannot be edited.
The invoice has been manually marked as final in the dashboard.

If you need to make any changes to invoice's items, taxes, issue date or tax ID, you'll need to issue a credit note and create a new invoice.

You will still be allowed to edit the customer's billing address, PO number, tags, payment details, additional notes, and custom metadata.

What this breaking change implies:

DELETE /invoices/INVOICE_ID will cease to exist and return a 410 Gone.
PUT /invoices/INVOICE_ID will only allow modification of the parameters po_number, tag_list, payment_details, notes, custom_metadata and all those related to the billing address: street_line_1,street_line_2,city,region,and postal_code.

Note that on 1 July the transition period for 20210316 ends as well, and the legacy endpoints for taxes and pagination will also respond 410 Gone.

If you're using these endpoints, you'll have to include extra logic in your code to issue a credit note and create a new invoice.

However, given your use case is one that automatically issues paid invoices (for instance, your customer's pays and then your system issues the invoice, not the other way around) and you're up for a challenge, our recommendation to face this change is to migrate to the new Transactions API.

Why? Because you can create the contact (if doesn't exists yet), create the invoice, and insert the payment information, all in only one performant API call 🎉!

Safely upgrading to API version 20210316

Most changes simply add functionality, thus maintaining backwards compatibility. Occasionally, we release a version with breaking changes, such as the current 20210316.

We are providing a transition time in which you will be able to use both 20170914 and 20210316. After July 1st the legacy endpoints for taxes and pagination will respond a 410 Gone.

Note that Quaderno.js is not affected by this change. If you're only using Quaderno.js to calculate taxes from your frontend, you don't have to do anything.

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/calculate?to_country=US&to_postal_code=90210&tax_code=standard&amount=10 \
  -u YOUR_API_KEY:x

"notice": "You haven't registered this tax jurisdiction in your Quaderno account. If you have to collect taxes here, please set it up in https://ACCOUNT_NAME.quadernoapp.com/settings/jurisdictions ."

Do not fret, the transition to 20210316 is as easy as pie 🥧.

For calculating tax rates, altough the new endpoint accepts many more parameters, just changing the URL from /taxes/calculate to /tax_rates/calculate will do. Well, not so fast. It may seem it worked quickly, but you're probably getting a 0% tax rate. That's because now you can only collect taxes on Tax Jurisdictions where you're registered. So don't be tempted to create a new custom Tax Rate, just head to your Quaderno Account and update the tax jurisdictions where your business is registered in. Now we're talking! Quaderno will always provide updated worldwide tax rates seamlessly for you.

Alternatively, you can register jurisdictions programatically, first listing all jurisdictions and then registering your Tax IDs on the jurisdictions. You can read more about Tax Jurisdictions here.

For paginating objects, we switched to a faster cursor based pagination approach and you'll need to change the page parameter for created_before, which references the ID of the object instead of the page number. You'll get a maximum of 100 objects in reverse chronological order (lower IDs means older objects). Note the response headers changed from X-Pages-CurrentPage and X-Pages-TotalPages to X-Pages-HasMore and X-Pages-NextPage.

You can test all this changes in our sandbox. There are two approaches:

Simply change the API version globally in Profile → API Keys. Note once you change it you cannot change it back, but you can override a concrete call sending the Accept HTTP header with: Accept: application/json; api_version=20170914
Sending the Accept HTTP header with: Accept: application/json; api_version=20210316 on every call.

And that's basically it 🎉! Now you can go focus on your business while we deal with your taxes.

Changelog

API versions and changes

20220325 (Current version)

Breaking change: /tax_rates/calculate no longer returns a notice explanation text with the tax calculation reason.
Backwards-compatible change: /tax_rates/calculate now always show a status on the response indicating a code for the calculation scenario.

20210701

Backwards-compatible change: Added verification_code and verification_permalink to invoices and credits.
Backported breaking change: Maximum items per document are now limited up to 200. Before, this was a soft limit per API request, which could be workarounded with subsequent PUT calls.
Backwards-compatible change: Billing API now supports partial refunds with the parameter credited_amount for invoices with one single item.
Backwards-compatible change: passing none as the region parameter to the GET /jurisdictions endpoint returns jurisdictions that do not have a specific region.
Backwards-compatible change: new threshold.eu.100k webhook for the Annual turnover report, to warn whenever sales of digital services within the EU (exclusive of VAT) reach €100,000. Applies only to EU-based sellers.
Backported breaking change: abandoned checkout sessions are automatically removed after seven days of inactivity (this is, no updates or not submission attempts from the customer).
Backwards-compatible change: we're adding new webhooks for the new Annual turnover report: threshold.warning and threshold.exceeded. See an example of the payload here.
Backported breaking change: we're removing the ability to edit coupons linked to Stripe coupons, as they won't allow edition and led to inconsistent states.
Backported breaking change: to complain with tax rules worldwide, DELETE /invoices/INVOICE_ID and DELETE /credits/CREDIT_ID endpoints no longer exists and return 404 Not Found. Instead deleting invoices you should associate them to credit notes using POST /credits with the invoice id, which will change its state to paid instead the refunded state. To correct errors creating credits we also provide a PUT /credits/CREDIT_ID/void to void credit notes. Note the webhooks invoice.deleted and credit.deleted are also gone.
Backported breaking change: to complain with tax rules worldwide, PUT /invoices/INVOICE_ID and PUT /credits/CREDIT_ID only allow modification of the parameters notes, tag_list, custom_metadata and all those related to the customer's address: street_line_1,street_line_2,city,region,postal_code and country. This change applies to ALL versions.
Backwards-compatible change: /tax_rates/calculate now always show a product_type on the response. When you specified the product_type explicitly on the request, we've been showing it in the response. However when you didn't, we used the account's default for tax calculation, and did not return that field. Now we always return the field used for the tax calculation in the response, whether you made it explicit on the request, or the account's default is used. It's a more consistent and informative behaviour.
Backwards-compatible change: creating and updating Connect custom accounts (POST and PUT to /accounts endpoint) now accepts specifying the default_product_type and default_tax_code. Before, defaults of service and eservice were applied.

20210316

Breaking change: record pagination is no longer performed with a page parameter, but with a created_before parameter. See the pagination documentation for more details.
Breaking change: the existing /taxes/calculate endpoint is deprecated in favour of the /tax_rates/calculate endpoint.
Adds a Deprecation: true header (as per draft-ietf-httpapi-deprecation-header-01) to responses using deprecated pagination, with a Link header linking to the updated documentation. After the deprecation dates, those endpoints will return a 410 Gone.

20170914

Added the accounts API
Added the related_document to the credit object.
Added tax_1_transaction_type and tax_2_transaction_type fields to the taxes attributes in the credit object.
Added transaction_type fields to the document items attributes in the credit object.
Added kind, stripe_plan_id, paypal_interval_unit, paypal_interval_frequency and paypal_interval_duration fields in the item object.
Changed number field limit to 20 characters for invoices, credits and estimates.

20170628

Return 429 (too many requests) instead of 503 (service unavailable) on rate limits.

20170418

Added custom_metadata as an editable field.

20161108

country is now returned as an attribute for invoices, expenses, credits and estimates.

20160614

Amounts are now returned as cents instead being formatted as amount with currency symbol.
Versions are no longer passed as part of the URL, instead they can be passed as an accept header.

20160602

First version.
Amounts are returned formatted as amount with currency symbol.

Dev tools

We provide a testing environment, and a few endpoints and libraries to help with the development experience with the Quaderno set of APIs and products.

Testing environment

We provide a separate environment for testing purposes, with its own URL and credentials. We call it Quaderno Sandbox. Follow the link to learn about its special facilities to improve the development experience!

Purging Quaderno Sandbox

curl --user sk_your-secret-key:x \
     --request POST \
     --url http://{{your-account-name}}.sandbox-quadernoapp.com/api/purge

Our testing environment, Quaderno Sandbox, has a global 200 documents cap. You can manually purge all data with:

POST /purge

Pinging the API

curl --user sk_your-secret-key:x \
     --url https://quadernoapp.com/api/ping

You can ping Quaderno to check if the service is up, your credentials are correct, or to know your remaining API requests without doing an accountable request:

GET /ping

Libraries

  gem 'quaderno', require: 'quaderno-ruby'

You can use our API wrappers to connect and handle our APIs in a nicer way. We provide a Ruby library and a PHP library.

You may eventually find also a Swift library in our Github repos, but it doesn't currently support the latest API additions.

Ruby Wrapper

  Quaderno::Base.configure do |config|
    config.auth_token = 'my_authenticate_token'
    config.url = 'https://my_subdomain.quadernoapp.com/api/'
    config.api_version = API_VERSION # Optional, defaults to the API version set in your account
  end

Our Ruby library code is in https://github.com/quaderno/quaderno-ruby.

Please follow the README instructions to learn more.

PHP Wrapper

require_once 'quaderno_load.php';
QuadernoBase::init('YOUR_API_KEY', 'YOUR_API_URL', API_VERSION);
QuadernoBase::ping();   // optionally test the API connection

Our PHP library code is in https://github.com/quaderno/quaderno-php and you may install it via Composer.

⚠️ There's a known limitation on the current version of the PHP wrapper which does not allow to easily inspect response headers, like the ones used to facilitate pagination (X-Pages-NextPage and X-Pages-HasMore). For now, you can workaround that either by playing with more requests with smaller data ranges and higher "limit" to fetch more docs (max 100); or fetch your first find data with any query and then perform another paginated request with the created_before parameter and the ID of the last returned document, until the response is empty.

$invoices = [];
$filters['limit'] = '50'; // bunches of 50 invoices per request
$filters['date']= "$from,$to"; // please use dates to avoid always getting all invoices
do {
  $data = QuadernoInvoice::find($filters);
  if (is_array($data) && !empty($data)) {
    $invoices = array_merge($invoices, $data);
    $last_invoice = end($data); // advances array's internal pointer to the last element, and returns its value
    $filters['created_before'] = $last_invoice->id; // paginate from there
  }
} while (!empty($data));

Please follow the README instructions to learn more.

CORE RESOURCES

Core resources are those shared across several API endpoints, like contacts, products or events.

Contacts

A contact is any customer or vendor who appears on your invoices, credit notes, and expenses.

Create a contact

  curl --request POST \
  --url https://ACCOUNT_NAME.quadernoapp.com/api/contacts/ \
  --user YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
      "kind": "person",
      "first_name": "Susan",
      "last_name": "Sanders",
      "country": "United Kingdom",
      "email": "anemail@example.com"
    }'

{
  "id": 1249481,
  "city": null,
  "country": "GB",
  "created_at": 1632158561,
  "email": "anemail@example.com",
  "first_name": "Susan",
  "full_name": "Susan Sanders",
  "kind": "person",
  "language": "EN",
  "last_name": "Sanders",
  "notes": null,
  "permalink": "https://ACCOUNT_NAME.quadernoapp.com/billing/th3p3rm4l1nk",
  "phone_1": null,
  "postal_code": null,
  "processor": null,
  "processor_id": null,
  "region": null,
  "street_line_1": null,
  "street_line_2": null,
  "tax_id": null,
  "web": null
}

HTTP Request

POST /contacts

Parameters

Parameter	Type	Description
`kind`	string	The type of contact. Values are `company` or `person`. Defaults to `company`.
`first_name`	string	The contact's first name / business name. Required
`last_name`	string	The contact's last name. Empty when the contact is a `company`.
`tax_id`	string	Any tax identification number. Quaderno can validate tax IDs from the EU, United Kingdom, Switzerland, Québec (Canada), Australia, and New Zealand.
`contact_person`	string	If the contact is a `company`, this is its contact person.
`street_line_1`	string	Address line 1 (Street address/PO Box).
`street_line_2`	string	Address line 2 (Apartment/Suite/Unit/Building).
`city`	string	City/District/Suburb/Town/Village.
`postal_code`	string	ZIP or postal code.
`region`	string	Region, province or state.
`country`	string	2-letter country code.
`phone_1`	string	The contact's phone number.
`email`	string	The contact's email address. Multiple emails should be separated by commas. Maximum number of addresses allowed is 3.
`web`	string	The contact's website.
`language`	string	The contact's preferred language. Should be included in the account's translations list
`notes`	string	Internal notes about the contact.

Retrieve a contact

curl https://ACCOUNT_NAME.quadernoapp.com/api/contacts/CONTACT_ID \
  -u YOUR_API_KEY:x

{
    "id":456987213,
    "kind":"person",
    "first_name":"Sheldon",
    "last_name":"Cooper",
    "full_name":"Sheldon Cooper",
    "street_line_1":"2311 N. Los Robles Avenue",
    "street_line_2":"",
    "postal_code":"91104",
    "city":"Pasadena",
    "region":"CA",
    "country":"US",
    "phone_1":"",
    "email":"s.cooperphd@yahoo.com",
    "web":"",
    "discount":null,
    "tax_id":"",
    "language":"EN",
    "notes":"",
    "permalink":"https://ACCOUNT_NAME.quadernoapp.com/billing/th3p3rm4l1nk",
}

HTTP Request

GET /contacts/CONTACT_ID

Parameters

Parameter	Type	Description
`CONTACT_ID`	integer	The ID of the contact to retrieve. Required

Retrieve a contact by payment processor

curl https://ACCOUNT_NAME.quadernoapp.com/api/PAYMENT_PROCESSOR/customers/CUSTOMER_ID \
  -u YOUR_API_KEY:x

{
    "id":456987213,
    "kind":"person",
    "first_name":"Sheldon",
    "last_name":"Cooper",
    "full_name":"Sheldon Cooper",
    "street_line_1":"2311 N. Los Robles Avenue",
    "street_line_2":"",
    "postal_code":"91104",
    "city":"Pasadena",
    "region":"CA",
    "country":"US",
    "phone_1":"",
    "email":"s.cooperphd@yahoo.com",
    "web":"",
    "discount":null,
    "tax_id":"",
    "language":"EN",
    "notes":"",
    "permalink":"https://ACCOUNT_NAME.quadernoapp.com/billing/th3p3rm4l1nk",
}

HTTP Request

GET /PAYMENT_PROCESSOR/customers/CUSTOMER_ID

Parameters

Parameter	Type	Description
`PAYMENT_PROCESSOR`	string	The name of the payment processor. Can be `stripe`, `paypal`, `gocardless` and `braintree`. Required
`CUSTOMER_ID`	string	The ID of the contact in the payment processor. Required

Update a contact

curl https://ACCOUNT_NAME.quadernoapp.com/api/contacts/CONTACT_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  -H 'Content-Type: application/json' \
  -d '{ "first_name": "Anthony" }'

{
    "id":456987213,
    "kind":"person",
    "first_name":"Anthony",
    "last_name":"Cooper",
    "full_name":"Sheldon Cooper",
    "street_line_1":"2311 N. Los Robles Avenue",
    "street_line_2":"",
    "postal_code":"91104",
    "city":"Pasadena",
    "region":"CA",
    "country":"US",
    "phone_1":"",
    "email":"s.cooperphd@yahoo.com",
    "web":"",
    "discount":null,
    "tax_id":"",
    "language":"EN",
    "notes":"",
    "permalink":"https://ACCOUNT_NAME.quadernoapp.com/billing/th3p3rm4l1nk",
}

HTTP Request

PUT /contacts/CONTACT_ID

Parameters

Parameter	Type	Description
`CONTACT_ID`	integer	The ID of the contact to update. Required
`kind`	string	The type of contact. Values are `company` or `person`. Defaults to `company`.
`first_name`	string	The contact's first name. Required
`last_name`	string	The contact's last name. Empty when the contact is a `company`.
`tax_id`	string	Any tax identification number. Quaderno can validate tax IDs from the EU, United Kingdom, Switzerland, Québec (Canada), Australia, and New Zealand.
`contact_person`	string	If the contact is a `company`, this is its contact person.
`street_line_1`	string	Address line 1 (Street address/PO Box).
`street_line_2`	string	Address line 2 (Apartment/Suite/Unit/Building).
`city`	string	City/District/Suburb/Town/Village.
`postal_code`	string	ZIP or postal code.
`region`	string	Region, province or state.
`country`	string	2-letter country code.
`phone_1`	string	The contact's phone number.
`email`	string	The contact's email address. Multiple emails should be separated by commas. Maximum number of addresses allowed is 3.
`web`	string	The contact's website. Validates format
`language`	string	The contact's preferred language. Should be included in the translations list
`notes`	string	Internal notes about the contact.

Delete a contact

curl https://ACCOUNT_NAME.quadernoapp.com/api/contacts/CONTACT_ID \
  -u YOUR_API_KEY:x \
  -X DELETE \
  -H 'Content-Type: application/json' \

HTTP Request

DELETE /contacts/CONTACT_ID

Parameters

Parameter	Type	Description
`CONTACT_ID`	integer	The ID of the contact to delete. Required

List all contacts

curl https://ACCOUNT_NAME.quadernoapp.com/api/contacts \
  -u YOUR_API_KEY:x

[
  {
    "id":456987213,
    "kind":"person",
    "first_name":"Sheldon",
    "last_name":"Cooper",
    "full_name":"Sheldon Cooper",
    "street_line_1":"2311 N. Los Robles Avenue",
    "street_line_2":"",
    "postal_code":"91104",
    "city":"Pasadena",
    "region":"CA",
    "country":"US",
    "phone_1":"",
    "email":"s.cooperphd@yahoo.com",
    "web":"",
    "discount":null,
    "tax_id":"",
    "language":"EN",
    "notes":"",
    "permalink":"https://ACCOUNT_NAME.quadernoapp.com/billing/th3p3rm4l1nk",
  },
  {
    "id":456982365,
    "kind":"company",
    "full_name":"Apple Inc.",
    "street_line_1":"1 Infinite Loop",
    "street_line_2":"",
    "postal_code":"95014",
    "city":"Cupertino",
    "region":"CA",
    "country":"US",
    "phone_1":"",
    "email":"info@apple.com",
    "web":"http://apple.com",
    "discount":null,
    "tax_id":"",
    "language":"EN",
    "notes":"",
    "permalink":"https://ACCOUNT_NAME.quadernoapp.com/billing/4n0th3rp3rm4l1nk",
  }
]

HTTP Request

GET /contacts

Parameters

Parameter	Type	Description
`q`	string	A case-sensitive filter on the list based on the contact's full name, email or tax ID.

Products

Products are all those goods or services that you sell to your customers, or that you buy to your providers to help run your business.

Products are internally equivalent to Document items from the Billing API, just with a slightly different set of fields. The advantage of this Products API is that you can manage the objects independently of the document they're being used on (invoices, expenses...). Both objects can be back-referenced via the product_code field.

Create a product

curl https://ACCOUNT_NAME.quadernoapp.com/api/items \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
    "code": "prod_ebook1",
    "name": "How to live with taxes",
    "description": "Ebook for dealing with taxes",
    "product_type": "service",
    "unit_cost": "9.1",
    "tax_class": "ebook",
    "tax_type": "included"
  }'

{
  "id": 40057,
  "code": "prod_ebook1",
  "description": "Ebook for dealing with taxes",
  "name": "How to live with taxes",
  "product_type": "service",
  "unit_cost": "9.1",
  "stock": null,
  "tax_class": "ebook",
  "kind": "one_off",
  "tax_type": "included",
  "tax_based_on": "customer_country",
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/items/40057"
}

HTTP Request

POST /items

Parameters

Parameter	Type	Description
`code`	string	The product’s SKU (Stock Keeping Unit) describe specific product variations, taking into account any combination of: attributes, currency, and cost. Required
`name`	string	The product’s name, meant to be displayable to the customer. Required
`unit_cost`	string	The unit amount in paise to be charged
`description`	string	The product’s description, meant to be displayable to the customer. Use this field to optionally store a long form explanation of the product being sold for your own rendering purposes.
`curency`	string	Three-letter ISO currency code, in uppercase. Must be a supported currency in your payment processors.
`tax_class`	string	The tax class that applies to the product.
`tax_type`	string	Specify if taxes are included or excluded in the `unit_cost`. Can be `included`, `excluded`. Defaults to `excluded`.
`product_type`	string	Specifies the product type. Can be either `good` or `service`. Defaults to `service`.
`kind`	string	The type of transaction. Can be `one_off` or `subscription`. Defaults to `one_off`
`stripe_id`	string	Only for Stripe `subscriptions`. ID of the Stripe price related to the subscription.
`paypal_interval_unit`	string	Only for PayPal `subscriptions`. Specifies billing frequency. Can be `daily`, `weekly`, `monthly`, `yearly`.
`paypal_interval_frequency`	integer	Only for PayPal `subscriptions`. The number of intervals between subscription billings.
`paypal_interval_duration`	integer	Only for `subscriptions`. Number of times the charge should recur.

Retrieve a product

curl https://ACCOUNT_NAME.quadernoapp.com/api/items/PRODUCT_ID \ 
  -u YOUR_API_KEY:x

{
  "id": 40057,
  "code": "prod_ebook1",
  "description": "Ebook for dealing with taxes",
  "name": "How to live with taxes",
  "product_type": "service",
  "unit_cost": "9.1",
  "stock": null,
  "tax_class": "ebook",
  "kind": "one_off",
  "tax_type": "included",
  "tax_based_on": "customer_country",
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/items/40057"
}

HTTP Request

GET /items/PRODUCT_ID

Parameters

Parameter	Type	Description
`PRODUCT_ID`	integer	The ID of the product to retrieve. Required

Update a product

curl https://ACCOUNT_NAME.quadernoapp.com/api/items/PRODUCT_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  --header 'Content-Type: application/json' \
  --data '{
    "kind": "subscription",
    "paypal_interval_duration": 6
  }'

{
  "id": 40057,
  "code": "prod_ebook1",
  "description": "Ebook for dealing with taxes",
  "name": "How to live with taxes",
  "product_type": "service",
  "unit_cost": "9.1",
  "stock": null,
  "tax_class": "ebook",
  "kind": "subscription",
  "tax_type": "included",
  "tax_based_on": "customer_country",
  "stripe_plan_id": "",
  "paypal_interval_unit": "monthly",
  "paypal_interval_frequency": null,
  "paypal_interval_duration": 6,
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/items/40057"
}

HTTP Request

PUT /items/PRODUCT_ID

Parameters

Parameter	Type	Description
`PRODUCT_ID`	integer	The ID of the product to update. Required
`code`	string	The product’s SKU (Stock Keeping Unit) describe specific product variations, taking into account any combination of: attributes, currency, and cost. Required
`name`	string	The product’s name, meant to be displayable to the customer. Required
`unit_cost`	string	The unit amount in paise to be charged
`description`	string	The product’s description, meant to be displayable to the customer. Use this field to optionally store a long form explanation of the product being sold for your own rendering purposes.
`currency`	string	Three-letter ISO currency code, in uppercase. Must be a supported currency in your payment processors.
`tax_class`	string	The tax class that applies to the product.
`tax_type`	string	Specify if taxes are included or excluded in the `unit_cost`. Can be `included`, `excluded`. Defaults to `excluded`.
`product_type`	string	Specifies the product type. Can be either `good` or `service`. Defaults to `service`.
`kind`	string	The type of transaction. Can be `one_off` or `subscription`. Defaults to `one_off`
`stripe_id`	string	Only for Stripe `subscriptions`. ID of the Stripe price related to the subscription.
`paypal_interval_unit`	string	Only for PayPal `subscriptions`. Specifies billing frequency. Can be `daily`, `weekly`, `monthly`, `yearly`.
`paypal_interval_frequency`	integer	Only for PayPal `subscriptions`. The number of intervals between subscription billings.
`paypal_interval_duration`	integer	Only for `subscriptions`. Number of times the charge should recur.

Delete a product

curl https://ACCOUNT_NAME.quadernoapp.com/api/items/PRODUCT_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /items/PRODUCT_ID

Parameters

Parameter	Type	Description
`PRODUCT_ID`	integer	The ID of the product to delete. Required

List all products

curl https://ACCOUNT_NAME.quadernoapp.com/api/items \
  -u YOUR_API_KEY:x

[
  {
    "id": 40057,
    "code": "prod_ebook1",
    "description": "Ebook for dealing with taxes",
    "name": "How to live with taxes",
    "product_type": "service",
    "unit_cost": "9.1",
    "stock": null,
    "tax_class": "ebook",
    "kind": "one_off",
    "tax_type": "included",
    "tax_based_on": "customer_country",
    "url": "https://ACCOUNT_NAME.quadernoapp.com/api/items/40057"
  },
  {
    "id": 186698,
    "code": "PRODUCT_SKU",
    "description": null,
    "name": "Titanic II: The revenge",
    "product_type": "service",
    "unit_cost": "99.0",
    "tax_class": "eservice",
    "kind": "one_off",
    "tax_type": "excluded",
    "tax_based_on": "customer_country",
  }
 ]

HTTP Request

GET /items

Parameters

Parameter	Type	Description
`q`	string	A case-sensitive filter on the list based on the product's code or name.

Events

Events are our way of letting you know when something interesting happens in your account. When an interesting event occurs, we create a new Event object and potentially send it to you in case you have registered its webhook.

For example, when a new invoice is created, we create a invoice.created event; and when an invoice is deleted, we create an invoice.deleted event.

The event object

{
  "event_type":"invoice.created",
  "account_id": 99999,
  "data":
  {
    "object":
    {
      "id":925,
      "contact_id":128,
      "tag_list":[],
      "number":"123346",
      "issue_date":"2016-02-12",
      "contact_name":"OrsonFarm",
      "contact": {
        "first_name":"OrsonFarm",
        "last_name":null,
        "email":"orso@farm.com",
        "contact_person":"Orson Welles"
      },
      "currency":"EUR",
      "gross_amount_cents":826,
      "total_cents":1000,
      "amount_paid_cents":0,
      "po_number":null,
      "payment_details":null,
      "notes":null,
      "state":"outstanding",
      "subject":null,
      "street_line_1":null,
      "street_line_2":null,
      "city":null,
      "postal_code":null,
      "region":null,
      "country":"ES",
      "processor_id":null,
      "processor":null,
      "processor_fee_cents":null,
      "custom_metadata": {
        "my_custom_id": "123456"
      },
      "due_date":null,
      "permalink":"5191567e45d6aa419927ce7a8ba2ee870c9f0a45",
      "email":null,
      "gross_amount":"8.26",
      "total":"10.00",
      "amount_paid":"0.00",
      "items":
      [
        {
          "id":1056,
          "description":"Test item acces token",
          "quantity":"1.0",
          "unit_price":"8.26",
          "discount_rate":"0.0",
          "tax_1_amount_cents":174,
          "tax_1_name":"IVA",
          "tax_1_rate":21.0,
          "tax_1_country":null,
          "tax_2_amount_cents":0,
          "tax_2_name":null,
          "tax_2_rate":null,
          "tax_2_country":null,
          "subtotal_cents":"826.0",
          "total_amount_cents":1000,
          "discount_cents":"0.0",
          "taxes_included":true,
          "reference":null,
          "tax_1_amount":"1.74",
          "tax_2_amount":"0.00",
          "unit_price_cents":"826.00",
          "discount":"0.00",
          "subtotal":"8.26",
          "total_amount":"10.00"
        }
      ],
      "payments":[]
    }
  }
}

{
  "event_type":"contact.updated",
  "account_id": 99999,
  "data":
  {
    "object":
    {
      "id":76,
      "kind":"person",
      "first_name":"Adella",
      "last_name":"Schowalter",
      "full_name":"Adella Schowalter",
      "contact_name":null,
      "street_line_1":null,
      "street_line_2":null,
      "postal_code":null,
      "city":null,
      "region":null,
      "country":"DE",
      "phone_1":null,
      "email":null,
      "web":null,
      "discount":null,
      "language":"EN",
      "tax_id":null,
      "currency":"USD",
      "notes":null,
      "processor_id":null,
      "processor":null
    }
  }
}

{
  "event_type":"payment.created",
  "account_id": 99999,
  "data":
  {
    "object":
    {
      "id":15,
      "document_id":815,
      "date":"2015-09-22",
      "payment_method":"credit_card",
      "amount_cents":400,
      "amount":"4.00"
    }
  }
}

{
  "event_type":"checkout.succeeded",
  "account_id": 99999,
  "data":{
    "object":{
      "transaction_details":{
        "session":43,
        "session_permalink":"https://demo.quadernoapp.com/checkout/session/8ccf3fdc42b85800188b113b81d3e4212ef094b3",
        "gateway":"stripe",
        "type":"charge",
        "description":"Unicorn",
        "customer":"cus_FXesSyaK3CG8Oz",
        "email":"john@doe.com",
        "transaction":"pi_1F2ZYtEjVHvINKlcq2as8H5V",
        "product_id":"prod_61ffa845b4a0b8",
        "tax_name":"VAT",
        "tax_rate":20.0,
        "extra_tax_name":null,
        "extra_tax_rate":null,
        "iat":1564647784,
        "amount_cents":1500,
        "amount":"15.00",
        "currency":"EUR"
      },
      "contact":{
        "id":547540,
        "kind":"company",
        "first_name":"John ",
        "last_name":"Doe",
        "full_name":"John  Doe",
        "contact_name":null,
        "street_line_1":"Fake Street 1",
        "postal_code":"SW15 5PU",
        "city":null,
        "region":null,
        "country":"GB",
        "email":"john@doe.com",
        "web":null,
        "language":"EN",
        "tax_id":null,
      }
    }
 }
}

{
  "event_type":"checkout.failed",
  "account_id": 99999,
  "data":{
    "object":{
      "message":{
        "response_message":"Insufficient funds",
        "status_code":422
      },
      "transaction_details":{
        "gateway":"stripe",
        "type":"charge",
        "description":"Unicorn",
      },
      "contact":{
        "id":547540,
        "kind":"company",
        "first_name":"John ",
        "last_name":"Doe",
        "full_name":"John  Doe",
        "contact_name":null,
        "street_line_1":"Fake Street 1",
        "postal_code":"SW15 5PU",
        "city":null,
        "region":null,
        "country":"GB",
        "email":"john@doe.com",
        "web":null,
        "language":"EN",
        "tax_id":null,
      }
    }
  }
}

{
  "event_type":"checkout.abandoned",
  "account_id": 99999,
  "data":{
    "object":{
      "transaction_details":{
        "description":"Unicorn",
        "plan":"awesome"
      },
      "contact":{
        "first_name":"John ",
        "last_name":"Doe",
        "city":null,
        "country":"GB",
        "email":"john@doe.com"
      }
    }
  }
}

All event uses the same data format, regardless of event type:

Parameter	Type	Description
`event_type`	string	The event which triggered the webhook (`invoice.created`, `contact.deleted`, `payment.created`, etc).
`account_id`	integer	ID of the account that originated the event.
`data`	hash	A simplified JSON representation of the object.

Types of events

This is a list of all the types of events we currently send via webhooks. We may add more at any time, so in developing and maintaining your code, you should not assume that only these types may exist.

Event types are a combination of the object you want to be notified about and the object state, like in resource.event. Our goal is to design a consistent system that makes things easier to anticipate and code against.

Available events are:

account.updated – Occurs whenever an account status or property has changed.
account.application.deauthorized – Occurs whenever a user deauthorizes an application. Sent to the related application only.
checkout.succeeded – Occurs when a checkout session has been successfully completed.
checkout.failed – Occurs when a checkout session fails.
checkout.abandoned – Occurs when a checkout session is abandoned by the customer.
contact.created – Occurs whenever a new contact is created.
contact.updated – Occurs whenever any property of a contact changes.
contact.deleted – Occurs whenever a contact is deleted.
credit.created – Occurs whenever a new credit note is created.
credit.updated – Occurs whenever a credit note changes (e.g., the credit amount).
expense.created – Occurs whenever a new expense is created.
expense.updated – Occurs whenever an expense changes (e.g., the expense amount).
expense.deleted – Occurs whenever an expense is deleted.
invoice.created – Occurs whenever a new invoice is created. Take a look at this event payload on the webhook payload examples section.
invoice.updated – Occurs whenever an invoice changes (e.g., the invoice amount).
payment.created – Occurs whenever a new payment is created.
payment.deleted – Occurs whenever a payment is deleted.
reporting.request.suceeded – Occurs whenever a requested report completed succesfully.
reporting.request.failed – Occurs whenever a requested report failed to complete.
threshold.warning - Occurs whenever a tax threshold is reached. Useful for contacting the tax nexus where you'll need to start filing taxes soon (or your tax advisor).
threshold.exceeded - Occurs whenever a tax threshold is reached. Useful for registering on the corresponding jurisdiction.
threshold.eu.100k - Occurs whenever sales of digital services within the EU (exclusive of VAT) reach €100,000. Applies only to EU-based sellers.

Endpoint errors

If your event-receiving endpoint does not respond with a 200 when Quaderno POSTs the data, Quaderno will try again within 48 hours.

If you fail to respond a second time then your subscription to that event will be deleted.

Checking the webhook signatures

Quaderno signs all webhook events it sends to your endpoints by including a signature in each event’s X-Quaderno-Signature header. This allows you to verify that requests were sent by Quaderno and not by a third-party impersonating us.

The key is returned when you create a webhook or when you list all your webhooks.

To verify a request, you must generate a signature using the same secret key used by Quaderno and comparing the result to the value of the X-Quaderno-Signature header.

In your code that processes webhooks:

Create a string with the webhook's URL, exactly as you entered it in Quaderno (including any query string, if applicable). Quaderno always signs webhook requests with the exact URL you provided when you configured the webhook. A difference as small as including or removing a trailing slash will prevent the signature from validating.
Append the POST body to the URL string, with no delimiter. The body should be a JSON-encoded representation of the data.
Hash the resulting string with HMAC-SHA1, using your webhook's authentication key to generate a binary signature.
Base64 encode the binary signature.
Compare the binary signature that you generated to the signature provided in the X-Quaderno-Signature HTTP header.

TAXES

Tax IDs

Quaderno calculates taxes based on your tax settings. You need to set all your tax IDs from the jurisdictions where you're registered for tax collection in order to calculate taxes for that jurisdictions.

This API will allow you to manage your tax IDs and validate any tax IDs.

Create a tax ID

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_ids \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
    "jurisdiction_id": "6",
    "value": "IE6388047V"
  }'

{
  "id": 235464,
  "jurisdiction": {
    "id": 6,
    "country": "IE",
    "name": "Ireland"
  },
  "state": "verified",
  "valid_from": "2021-09-01",
  "valid_until": null,
  "value": "IE6388047V",
  "created_at": 1632985500
}

HTTP Request

POST /tax_ids

Parameters

Parameter	Type	Description
`jurisdiction_id`	integer	The tax jurisdiction. Required
`value`	decimal	The tax ID's value for the selected. Required
`valid_from`	date	The tax ID's validity date. Defaults to the beginning of the year.

Retrieve a tax ID

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_ids/TAX_ID \
  -u YOUR_API_KEY:x

{
  "id": 235464,
  "jurisdiction": {
    "id": 6,
    "country": "IE",
    "name": "Ireland"
  },
  "state": "verified",
  "valid_from": "2021-09-01",
  "valid_until": null,
  "value": "IE6388047V",
  "created_at": 1632985500
}

HTTP Request

GET /tax_ids/TAX_ID

Parameters

Parameter	Type	Description
`TAX_ID`	integer	The ID of the tax ID to retrieve. Required

Update a tax ID

Updating your tax ID is allowed to fix mistakes when setting it. Updating your jurisdiction is not allowed.

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_ids/TAX_ID
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  -X PUT \
  -d '{
        "value": "21416127"
      }'

{
  "id": 235464,
  "jurisdiction": {
    "id": 6,
    "country": "IE",
    "name": "Ireland"
  },
  "state": "verified",
  "valid_from": "2021-09-01",
  "valid_until": null,
  "value": "IE21416127",
  "created_at": 1632985500
}

HTTP Request

PUT /tax_ids/TAX_ID

Parameters

Parameter	Type	Description
`TAX_ID`	integer	The ID of the tax ID to update. Required
`value`	decimal	The tax ID's value for the selected. Required
`valid_from`	date	The tax ID's validity date.
`valid_until`	date	The tax ID's expiration date. Use null if the tax ID has no expiration date.

Delete a tax ID

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_ids/TAX_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /tax_ids/TAX_ID

Parameters

Parameter	Type	Description
`TAX_ID`	integer	The ID of the tax ID to delete. Required

List all tax IDs

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_ids \
  -u YOUR_API_KEY:x

[
  {
    "id": 456987213,
    "jurisdiction": {
      "id": 6,
      "name": "Ireland"
    },
    "state": "verified",
    "valid_from": "2015-01-01",
    "valid_until": null,
    "value": "IE6388047V",
    "created_at": 1611322639
  },
  {
    "id": 456982365,
    "jurisdiction": {
      "id": 73,
      "name": "Luxembourg"
    },
    "state": "verified",
    "valid_from": "2020-01-01",
    "valid_until": null,
    "value": "LU21416127",
    "created_at": 1611322639
  }
]

HTTP Request

GET /tax_ids

Validate a tax ID

Validating a tax ID is useful to learn if your customer is a business, so that you can apply reverse charge when selling to countries different that yours on B2B sales. Head to our Support Center to learn more about applying reverse charges.

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_ids/validate.json?country=IE&tax_id=IE6388047V \
  -u YOUR_API_KEY:x \

{
  "valid":true  // this means your customer is a business
}

HTTP Request

GET /tax_ids/validate

Parameters

Parameter	Mandatory	Description
`country`	Yes	The customer's country (2-letter ISO code)
`tax_id`	Yes	The customer's tax ID.

The result can be true (valid tax ID), false (invalid tax ID) or null (the external service is temporarily unavailable).

Please keep in mind that tax IDs are not actually validated while using the Sandbox. For testing purposes you can use the following IDs:

DE111111111: invalid number, returns false
IE222222222: node down, returns null

Tax Rates

This API will allow you to customize your available tax rates for tax calculation.

Take into account that taxes are calculated based on the tax IDs you registered on the different Tax Jurisdictions. You may want to override these tax rates for greater control over the taxes you charge, by creating a custom tax rate. We recommend using this option only as a last resort for special cases.

Create a custom tax rate

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
      "name": "XYZ",
      "jurisdiction_id": 50,
      "value": 10
    }'

{
  "id": 226655,
  "type": "custom",
  "jurisdiction": {
    "id": 50,
    "country": "US",
    "name": "United States – Texas",
    "region": "TX"
  },
  "name": "XYZ",
  "tax_code": "eservice",
  "valid_from": "2018-01-01",
  "valid_until": null,
  "value": 10.0,
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/226655",
  "created_at": 1628787498
}

HTTP Request

POST /tax_rates

Parameters

Parameter	Type	Description
`jurisdiction_id`	integer	The tax jurisdiction. Required
`name`	string	The tax rate's name. Required
`value`	decimal	The tax rate's value for the selected `tax_code`. Required
`tax_code`	string	The tax code. Defaults to the account's default tax code.
`valid_from`	date	The tax rate's validity date. Defaults to the beginning of 3 years ago.

Retrieve a tax rate

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/TAX_RATE_ID \
  -u YOUR_API_KEY:x

{
  "id": 226655,
  "type": "custom",
  "jurisdiction": {
    "id": 50,
    "country": "US",
    "name": "United States – Texas",
    "region": "TX"
  },
  "name": "XYZ",
  "tax_code": "eservice",
  "valid_from": "2018-01-01",
  "valid_until": null,
  "value": 10.0,
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/226655",
  "created_at": 1628787498
}

HTTP Request

GET /tax_rates/TAX_RATE_ID

Parameters

Parameter	Type	Description
`TAX_RATE_ID`	integer	The ID of the tax rate to retrieve. Required

Update a tax rate

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/TAX_RATE_ID \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  -X PUT \
  --data '{
      "jurisdiction_id": 50,
      "value": 13
    }'

{
  "id": 226655,
  "type": "custom",
  "jurisdiction": {
    "id": 50,
    "country": "US",
    "name": "United States – Texas",
    "region": "TX"
  },
  "name": "XYZ",
  "tax_code": "eservice",
  "valid_from": "2018-01-01",
  "valid_until": null,
  "value": 13.0,
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/226655",
  "created_at": 1628787498
}

HTTP Request

PUT /tax_rates/TAX_RATE_ID

Parameters

Parameter	Type	Description
`TAX_RATE_ID`	integer	The ID of the tax rate to update. Required
`jurisdiction_id`	integer	The tax jurisdiction. Required
`name`	string	The tax rate's name. Required
`value`	decimal	The tax rate's value for the selected `tax_code`. Required
`tax_code`	string	The tax code. Defaults to the account's default tax code.
`valid_from`	date	The tax rate's validity date. Defaults to 3 years ago.
`valid_until`	date	The tax rate's expiration date. Use null if the tax rate has no expiration date.

Delete a tax rate

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/TAX_RATE_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /tax_rates/TAX_RATE_ID

Parameters

Parameter	Type	Description
`TAX_RATE_ID`	integer	The ID of the tax rate to delete. Required

List all tax rates

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates \
  -u YOUR_API_KEY:x

[
  {
    "id": 226655,
    "type": "custom",
    "jurisdiction": {
      "id": 50,
      "country": "US",
      "name": "United States – Texas",
      "region": "TX"
    },
    "name": "XYZ",
    "tax_code": "eservice",
    "valid_from": "2018-01-01",
    "valid_until": null,
    "value": 13.0,
    "url": "https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/226655",
    "created_at": 1628787498
  },
  {…},
  {…}
]

HTTP Request

GET /tax_rates

List all available Tax Rates based on your registered Tax Jurisdictions.

Filtering by tax jurisdiction

Filtering is available using the query parameter jurisdiction_id. Learn more about jurisdictions here.

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/?jurisdiction_id=50 \
  -u YOUR_API_KEY:x

Calculating a tax rate

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_rates/calculate?to_country=US&to_postal_code=90210&tax_code=standard&amount=10 \
  -u YOUR_API_KEY:x

{
  "city": "BEVERLY HILLS",
  "country": "US",
  "county": "LOS ANGELES",
  "currency": "EUR",
  "name": "Sales tax",
  "notes": null,
  "product_type": "service", // informative field, either sent on request or default account's product type
  "rate": 9.5,
  "region": "CA",
  "tax_behavior": "exclusive",
  "tax_code": "standard",
  "taxable_part": 100.0,
  "taxable_base": 10.0,
  "tax_amount": 0.95,
  "total_amount": 10.95,
  "status":"taxable"
}

The tax calculation endpoint allows you to send the transaction's amount before taxes. Quaderno will use that amount to calculate the final tax-included amount you should charge to your customer.

Tax calculations are based on your tax settings. You can collect taxes only in tax jurisdictions where you're registered for tax collection. Please check your tax jurisdictions in your Quaderno account, or use the Tax Jurisdictions and Tax IDs APIs to register.

taxable_base = amount * taxable_part
tax_amount   = taxable_base * rate/100
total_amount = amount + tax_amount

{
  "additional_name": "QST",
  "additional_rate": 9.975,
  "additional_taxable_part": 100.0,
  "country": "CA",
  "currency": "CAD",
  "name": "GST",
  "notes": null,
  "product_type": "service",
  "rate": 5.0,
  "region": "QC",
  "tax_behavior": "exclusive",
  "tax_code": "standard",
  "taxable_part": 100.0,
  "import": false,
  "subtotal": 100.0,
  "tax_amount": 5.0,
  "additional_tax_amount": 9.98,
  "total_amount": 114.98,
  "status":"taxable"
}

{
  "country": "CA",
  "currency": "EUR",
  "name": null, // use this to identify wrongly configured Tax Jurisdictions
  "notes": null,
  "product_type": "service",
  "rate": 0.0,
  "region": null,
  "tax_behavior": "exclusive",
  "tax_code": "eservice",
  "taxable_part": null,
  "import": true,
  "subtotal": null,
  "tax_amount": null,
  "total_amount": null,
  "status":"not_registered"
}

HTTP Request

GET /tax_rates/calculate

Parameters

Parameter	Type	Description
`to_country`	string	The customer's country. 2-letter ISO country code. Required
`to_postal_code`	string	The customer's postal code. Required whether the customer is based in the US or Canada.
`to_city`	string	The customer's city. It provides more accurate calculations in the US.
`tax_id`	string	The customer's tax ID.
`from_country`	string	The country where the order shipped from. 2-letter ISO country code. Defaults to the account's country.
`from_postal_code`	string	The postal code where the order shipped from. Defaults to the account's postal code.
`amount`	decimal	The transaction's amount.
`tax_code`	string	The transaction's tax code. Defaults to the account's default tax code.
`tax_behavior`	string	Specifies whether the price is considered inclusive of taxes or exclusive of taxes. Can be `inclusive` or `exclusive`. Defaults to `exclusive`.
`product_type`	string	Specifies whether the product is a good or a service. Can be `good` or `service`. Defaults to the account's default. Read this guide to change it.
`date`	string	The transaction's date. Defaults to today.
`currency`	string	The transaction's currency. Three-letter ISO currency code, in uppercase. Defauts to the account's default currency.

The status field response

The status field in the response contains a code indicating the reason of the calculation result:

taxable: the transaction is taxable and the calculator will return a non-zero rate.
non_taxable: The transaction is non taxable if either the particular product is not taxable (ie. a digital product in California) or if the region for a particular territory within the registred jurisdiction is exempted (for example if you're registered in France selling to a customer from New Caledonia)
not_registered: You're trying to calculate taxes in a jurisdiction you're not registered in.
reverse_charge: The transaction is reverse charge so VAT won't be calculated

When reverse-charge applies (only applicable on B2B sales to other countries), the response will contain a field like:


"notes": "Tax amount subject to reverse charge"

and


"status":"reverse_charged"

Tax Jurisdictions

A tax jurisdiction is an area subject to its own tax regulations. A tax jurisdiction can be a country, region, group of countries, province, state, city, county, district or any other area with a designated authority for tax purposes.

A businesses cannot collect taxes in a particular jurisdiction without being registered for tax collection with their tax authorities first.

You cannot create new tax jurisdictions, this API allows you to get all the tax jurisdictions so that you can then associate your tax id on those where you must collect taxes, using https://developers.quaderno.io/api/#create-a-tax-id. This action is equivalent to setting up a jurisdiction in the app via https://quadernoapp.com/settings/jurisdictions/new

Retrieve a jurisdiction

curl https://ACCOUNT_NAME.quadernoapp.com/api/jurisdictions/JURISDICTION_ID \
  -u YOUR_API_KEY:x

{
  "id": 94,
  "name": "Canada – British Columbia",
  "country": "CA",
  "region": "BC"
}

HTTP Request

GET /jurisdictions/JURISDICTION_ID

Parameters

Parameter	Type	Description
`JURISDICTION_ID`	integer	The ID of the jurisdiction to retrieve. Required

List all jurisdictions

curl https://ACCOUNT_NAME.quadernoapp.com/api/jurisdictions.json?country=CA \
  -u YOUR_API_KEY:x

[
  {
    "id": 94,
    "name": "Canada – British Columbia",
    "country": "CA",
    "region": "BC"
  },
  {
    "id": 95,
    "name": "Canada – Quebec",
    "country": "CA",
    "region": "QC"
  },
  {
    "id": 96,
    "name": "Canada – Saskatchewan",
    "country": "CA",
    "region": "SK"
  },
  {
    "id": 100,
    "name": "Canada – Manitoba",
    "country": "CA",
    "region": "MB"
  },
  {
    "id": 129,
    "name": "Canada – GST/HST",
    "country": "CA"
  }
]

HTTP Request

GET /jurisdictions

Parameters

Parameter	Type	Description
`country`	string	A case-sensitive filter on the list based on the jurisdiction's country.
`region`	string	A case-sensitive filter on the list based on the jurisdiction's region. Accepts the special string `none` to return jurisdictions that specifically have no region.

Tax Codes

Tax codes classify goods and services for tax purposes.

Retrieve a tax code

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_codes/TAX_CODE_ID \
  -u YOUR_API_KEY:x

  {
    "id": "eservice",
    "description": "Service that is delivered over the internet. It is essentially automated, involves minimal human intervention and in the absence of information technology does not have viability.",
    "name": "Electronically supplied services"
  }

HTTP Request

GET /tax_codes/TAX_CODE_ID

Parameters

Parameter	Type	Description
`TAX_CODE_ID`	integer	The ID of the tax code to retrieve. Required

List all tax codes

curl https://ACCOUNT_NAME.quadernoapp.com/api/tax_codes \ 
  -u YOUR_API_KEY:x

[
  {
    "id": "consulting",
    "description": "Any consulting and professional service (e.g., lawyers, designers, engineers, tax advisors, etc.).",
    "name": "Consulting"
  },
  {
    "id": "ebook",
    "description": "An electronic book that is sold with unlimited use.",
    "name": "eBook"
  },
  {
    "id": "eservice",
    "description": "Service that is delivered over the internet. It is essentially automated, involves minimal human intervention and in the absence of information technology does not have viability.",
    "name": "Electronically supplied services"
  },
  {
    "id": "exempt",
    "description": "Any nontaxable good or service. No tax is applied for jurisdictions that impose a tax.",
    "name": "Non-taxable"
  },
  {
    "id": "reduced",
    "description": "Specific goods and services with a reduced tax rate.",
    "name": "Reduced tax rate"
  },
  {
    "id": "saas",
    "description": "Cloud services software delivered over the internet. The software is not customized for the specific buyer. Assumes no software is downloaded by the buyer.",
    "name": "Software as a service (SaaS)"
  },
  {
    "id": "standard",
    "description": "Any taxable good or service. For jurisdictions that impose a tax, the standard rate is applied.",
    "name": "Generally taxable"
  }
]

HTTP Request

GET /tax_codes

Evidence

Location evidence are proofs of the customer's location that should be stored in order to be compliant with tax rules in some tax jurisdictions (e.g. EU VAT MOSS).

Create an evidence

curl https://ACCOUNT_NAME.quadernoapp.com/api/evidence \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
      "document_id": 2009439,
      "billing_country": "US",
      "ip_address": "255.255.255.255",
      "bank_country": "US"
    }'

{
  "id": 982855,
  "document_id": 2009439,
  "state": "confirmed",
  "billing_country": "US",
  "ip_address": "255.255.255.255",
  "ip_country": null, // autocompleted when given a valid public IP
  "bank_country": "US",
  "additional_evidence": null,
  "additional_evidence_country": null,
  "notes": null
}

HTTP Request

POST /evidence

Parameters

Parameter	Type	Description
`document_id`	integer	The ID of the related document. Required
`billing_country`	string	Customer's billing country (2-letter ISO code)
`ip_address`	string	Customer's IP address
`bank_country`	string	Customer's bank country (2-letter ISO code)
`additional_evidence`	string	An explanatory note about the additional evidence. Up to 255 chars. Required if `additional_evidence_country` is passed
`additional_evidence_country`	string	Additional evidence for the customer location (2-letter ISO code). Required if `additional_evidence` is passed)
`notes`	string	Additional notes about the evidence

Retrieve an evidence

curl https://ACCOUNT_NAME.quadernoapp.com/api/evidence/EVIDENCE_ID \
  -u YOUR_API_KEY:x

  {
    "id":483,
    "document_id":9748,
    "state":"conflicting", // there are two non-matching evidences
    "billing_country":"ES",
    "ip_address":null,
    "ip_country":null,
    "bank_country":"US",
    "additional_evidence":null,
    "additional_evidence_country":null,
    "notes":null
  }

{
  "id": 981519,
  "document_id": 2008033,
  "state": "conflicting",
  "billing_country": "FR",
  "ip_address": "255.255.255.255",
  "ip_country": null,
  "bank_country": "FR",
  "additional_evidence": null,
  "additional_evidence_country": null,
  "notes": "Current tax (US) is different from customer location tax (FR)"
}

HTTP Request

GET /evidences/EVIDENCE_ID

Parameters

Parameter	Type	Description
`EVIDENCE_ID`	integer	The ID of the evidence to retrieve. Required

Update an evidence

curl https://ACCOUNT_NAME.quadernoapp.com/api/evidence/EVIDENCE_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  --data '{
    "billing_country": "FR",
    "bank_country": "FR"
  }'

  {
    "id":483,
    "document_id":9748,
    "state":"confirmed", // now two evidences match
    "billing_country":"FR",
    "ip_address": null,
    "ip_country": null,
    "bank_country":"FR",
    "additional_evidence":null,
    "additional_evidence_country":null,
    "notes":null
  }

HTTP Request

PUT /evidences/EVIDENCE_ID

Parameters

Parameter	Type	Description
`EVIDENCE_ID`	integer	The ID of the evidence to update. Required
`document_id`	integer	The ID of the related document. Required
`billing_country`	string	Customer's billing country (2-letter ISO code)
`ip_address`	string	Customer's IP address
`bank_country`	string	Customer's bank country (2-letter ISO code)
`additional_evidence`	string	An explanatory note about the additional evidence. Up to 255 chars. Required if `additional_evidence_country` is passed
`additional_evidence_country`	string	Additional evidence for the customer location (2-letter ISO code). Required if `additional_evidence` is passed)
`notes`	string	Additional notes about the evidence

List all evidence

curl https://ACCOUNT_NAME.quadernoapp.com/api/evidence \
  -u YOUR_API_KEY:x

[
  {
    "id":487,
    "document_id":9756,
    "state":"unsettled", // example for missing evidences
    "billing_country":"US",
    "ip_address":null,
    "ip_country":null,
    "bank_country":null,
    "additional_evidence":null,
    "additional_evidence_country":null,
    "notes":null
  },
  {
    "id":486,
    "document_id":9755,
    "state":"confirmed",
    "billing_country":"ES",
    "ip_address":"92.186.16.30",
    "ip_country":"ES",
    "bank_country":null,
    "additional_evidence":null,
    "additional_evidence_country":null,
    "notes":null
  },
]

HTTP Request

GET /evidence

Parameters

Parameter	Type	Description
`state`	string	A case-sensitive filter on the list based on the evidence's state. You can combine multiple states separated by commas like `?state=confirmed,unsettled`. Valid states are `confirmed`, `unsettled` and `conflicting`.
`document_id`	string	A case-sensitive filter on the list based on the document related to the evidence.

BILLING

Invoices

An invoice is a detailed list of goods shipped or services rendered, with an account of all costs.

Create an invoice

curl https://ACCOUNT_NAME.quadernoapp.com/api/invoices \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
    "contact": {
      "first_name": "John"
    },
    "currency": "EUR",
    "items_attributes": [
      {
        "product_code": "prod_ebook1"
      },
      {
        "description": "A new product example",
        "product_code": "prod_zzz",
        "quantity": 1,
        "total_amount": 100,
        "discount_rate": 10,
        "currency": "EUR",
        "tax_1_name": "IVA",
        "tax_1_rate": 21.0,
        "tax_1_country": "",
        "tax_1_region": null,
        "tax_1_transaction_type": "standard"
      }
    ], 
    "payment_method": "credit_card",
    "custom_metadata": {
      "a_custom_key": "a custom value"
    },
    "verification_code": "08V9SBg49G",
    "verification_permalink": "https://example.com/verification/08V9SBg49G"
  }'

{
  "id": 2009439,
  "blocked": false,
  "number": "00022",
  "issue_date": "2021-09-23",
  "created_at": 1632395785,
  "contact": {
    "id": 1247386,
    "full_name": "John"
  },
  "tax_id": null,
  "country": "ES",
  "street_line_1": null,
  "street_line_2": null,
  "city": null,
  "region": null,
  "postal_code": null,
  "po_number": null,
  "due_date": null,
  "currency": "EUR",
  "subject": null,
  "items": [
    {
      "id": 5889679,
      "product_code": "prod_ebook1",
      "description": "How to live with taxes",
      "reference": "prod_ebook1",
      "quantity": "1.0",
      "unit_price_cents": "910.0",
      "discount_rate": "0.0",
      "subtotal_cents": "910.0",
      "discount_cents": "0.0",
      "tax_1_name": null,
      "tax_1_rate": null,
      "tax_1_country": null,
      "tax_1_region": null,
      "tax_1_transaction_type": "eservice",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "gross_amount_cents": "910.0"
    },
    {
      "id": 5889680,
      "product_code": "prod_zzz",
      "description": "A new product example",
      "reference": "prod_zzz",
      "quantity": "1.0",
      "unit_price_cents": "9182.0",
      "discount_rate": "10.0",
      "subtotal_cents": "9182.2",
      "discount_cents": "918.2",
      "tax_1_name": "IVA",
      "tax_1_rate": 21.0,
      "tax_1_country": "ES",
      "tax_1_region": null,
      "tax_1_transaction_type": "standard",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "gross_amount_cents": "8264.0"
    }
  ],
  "subtotal_cents": "10092.0",
  "discount_cents": "918.0",
  "taxes": [
    {
      "label": "IVA (21%)",
      "rate": 21.0,
      "country": "ES",
      "region": null,
      "transaction_type": "standard",
      "amount_cents": 1735
    }
  ],
  "total_cents": 10909,
  "processor_fee_cents": null,
  "payments": [
    {
      "id": 1411973,
      "date": "2021-09-23",
      "payment_method": "credit_card",
      "amount_cents": 10909,
      "url": "https://ACCOUNT_NAME.quadernoapp.com/api/invoices/2009439/payments/1411973.json"
    }
  ],
  "payment_details": null,
  "notes": null,
  "state": "outstanding",
  "tag_list": [],
  "secure_id": "33e50eb45e36965033cafda76a56ffa818ea5e86",
  "permalink": "https://ACCOUNT_NAME.quadernoapp.com/invoice/33e50eb45e36965033cafda76a56ffa818ea5e86?otp=152406",
  "pdf": "https://ACCOUNT_NAME.quadernoapp.com/invoice/33e50eb45e36965033cafda76a56ffa818ea5e86.pdf?otp=152406",
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/invoices/2009439.json",
  "processor": null,
  "processor_id": null,
  "custom_metadata": {
    "a_custom_key": "a custom value"
  },
  "verification_code": "08V9SBg49G",
  "verification_permalink": "https://example.com/verification/08V9SBg49G"
}

HTTP Request

POST /invoices

Parameters

Parameter	Type	Description
`number`	string	A unique, sequential code that identifies the invoice. Legally, an invoice number sequence should never contain repeats or gaps. Automatic numbering is used by default. Manual numbering is discouraged.
`issue_date`	date	The date of the invoice's issue – not necessarily the date the products or services were provided.
`currency`	string	Three-letter ISO currency code, in uppercase. Defaults to the account's default currency.
`contact`	object	The data of the customer who will be billed.
`items_attributes`	array	Array of document items. Required
`payment_method`	string	Use this parameter to mark this document as paid in a single request. Can be `credit_card`, `cash`, `wire_transfer`, `direct_debit`, `check`, `iou`, `paypal` or `other`
`payment_processor`	string	The name of the payment processor used to take the payment.
`payment_processor_id`	string	The ID of the transaction in the `payment_processor`.
`po_number`	string	The number of the related order.
`tag_list`	string	Multiple tags should be separated by commas
`payment_details`	string	Detailed information about the accepted payment methods.
`notes`	string	Extra notes about the invoice.
`attachment`	object	The data of the file to be attached.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.
`verification_code`	string	The code needed to validate the invoice, usually generated by tax authorities.
`verification_permalink`	string	The link needed to validate the invoice, usually generated by tax authorities.

Retrieve an invoice

curl https://ACCOUNT_NAME.quadernoapp.com/api/invoices/INVOICE_ID \
  -u YOUR_API_KEY:x

{
  "id":"507693322f412e0e2e0000da",
  "number":"0000047",
  "issue_date":"2012-10-11",
  "contact":{
    "id":"5073f9c22f412e02d00004cf",
    "full_name":"Teenage Mutant Ninja Turtles"
  },
  "country":"US",
  "street_line_1":"Melrose Ave, Sewer #3",
  "street_line_2":"",
  "city":"New York",
  "region":"New York",
  "postal_code":"",
  "po_number":null,
  "due_date":null,
  "currency":"USD",
  "exchange_rate":"0.680309",
  "items":[
    {
      "id":"48151623429",
      "description":"pizza",
      "quantity":"15.0",
      "unit_price_cents":"6000",
      "discount_rate":"0.0",
      "tax_1_name":"",
      "tax_1_rate":"",
      "tax_2_name":"",
      "tax_2_rate":"",
      "reference":"Even the bad ones taste good!",
      "subtotal_cents":"6000",
      "discount_cents":"0",
      "gross_amount_cents":"6000"
    }
  ],
  "subtotal_cents":"6000",
  "discount_cents":"0",
  "taxes":[],
  "total_cents":"6000",
  "payments":[],
  "payment_details":"",
  "notes":"",
  "state":"outstanding",
  "tag_list":["lasagna", "cat"],
  "secure_id":"7hef1rs7p3rm4l1nk",
  "permalink":"https://ACCOUNT_NAME.quadernoapp.com/invoice/7hef1rs7p3rm4l1nk",
  "pdf":"https://ACCOUNT_NAME.quadernoapp.com/invoice/7hef1rs7p3rm4l1nk.pdf",
  "custom_metadata":{},
  "verification_code": "08V9SBg49G",
  "verification_permalink": "https://example.com/verification/08V9SBg49G"

}

HTTP Request

GET /invoices/INVOICE_ID

Parameters

Parameter	Type	Description
`INVOICE_ID`	integer	The ID of the invoice to retrieve. Required

Update an invoice

curl https://ACCOUNT_NAME.quadernoapp.com/api/invoices \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  -X PUT \
  --data '{
      "street_line_1": "New Address"
    }'
  ...

HTTP Request

PUT /invoices/INVOICE_ID

In our goal to make Quaderno compliant with tax rules worldwide, edition of invoices is limited to: po_number, tag_list, payment_details, notes, custom_metadata and all those related to the billing address: street_line_1,street_line_2,city,region, and postal_code.

If you need to make any changes to items, taxes, issue date or customer's tax ID, you'll need to issue a credit note and create a new invoice.

Parameters

Parameter	Type	Description
`INVOICE_ID`	integer	The ID of the invoice to update. Required
`contact`	object	The data of the customer who will be billed.
`street_line_1`	string	The customer's billing address line 1 (Street address/PO Box).
`street_line_2`	string	The customer's billing address line 2 (Apartment/Suite/Unit/Building).
`city`	string	The customer's billing city.
`region`	string	The customer's billing state/province/region.
`postal_code`	string	The customer's billing ZIP or postal code. Available for updates.
`payment_processor`	string	The name of the payment processor used to take the payment.
`payment_processor_id`	string	The ID of the transaction in the `payment_processor`.
`po_number`	string	The number of the related order.
`tag_list`	string	Multiple tags should be separated by commas
`payment_details`	string	Detailed information about the accepted payment methods.
`attachment`	object	The data of the file to be attached.
`notes`	string	Extra notes about the invoice.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.
`verification_code`	string	The code needed to validate the invoice, usually generated by tax authorities.
`verification_permalink`	string	The link needed to validate the invoice, usually generated by tax authorities.

Delete an invoice

In our goal to make Quaderno compliant with tax rules worldwide, it is not possible to delete invoices. If you want to cancel out an invoice, please issue a credit note.

Deliver an invoice

Use this endpoint to send an invoice to your customer.

Emails will be sent from notifications@quaderno.io. If your customer replies to an invoice email, the reply will go to the email address you've set up on the business data page.

curl https://ACCOUNT_NAME.quadernoapp.com/api/invoices/INVOICE_ID/deliver \
  -u YOUR_API_KEY:x

HTTP Request

GET /invoices/INVOICE_ID/deliver

Parameters

Parameter	Type	Description
`INVOICE_ID`	integer	The ID of the invoice to deliver. Required

List all invoices

curl -u YOUR_API_KEY:x \
     -X GET 'https://ACCOUNT_NAME.quadernoapp.com/api/invoices'

[
  {
    "id":"507693322f412e0e2e00000f",
    "number":"0000047",
    "issue_date":"2012-10-11",
    "created_at":"1325376000",
    "contact":{
      "id":"5073f9c22f412e02d0000032",
      "full_name":"Garfield"
    },
    "country":"US",
    "street_line_1":"Street 23",
    "street_line_2":"",
    "city":"New York",
    "region":"New York",
    "postal_code":"10203",
    "po_number":null,
    "due_date":null,
    "currency":"USD",
    "exchange_rate":"0.680309",
    "items":[
      {
        "id":"48151623429",
        "description":"lasagna",
        "quantity":"25.0",
        "unit_price_cents":"375",
        "discount_rate":"0.0",
        "tax_1_name":"",
        "tax_1_rate":"",
        "tax_2_name":"",
        "tax_2_rate":"",
        "reference":"Awesome!",
        "subtotal_cents":"9375",
        "discount_cents":"0",
        "gross_amount_cents":"9375"
      }
    ],
    "subtotal_cents":"9375",
    "discount_cents":"0",
    "taxes":[],
    "total_cents":"9375",
    "payments":[
      {
        "id":"50aca7d92f412eda5200002c",
        "date":"2012-11-21",
        "payment_method":"credit_card",
        "payment_processor":"stripe",
        "payment_processor_id":"ch_19yUdh2eZvKYlo2CkFVBOZG7",
        "amount_cents":"9375",
      },
    ],
    "payment_details":"Ask Jon",
    "notes":"",
    "state":"paid",
    "tag_list":["lasagna", "cat"],
    "secure_id":"7hef1rs7p3rm4l1nk",
    "permalink":"https://quadernoapp.com/invoice/7hef1rs7p3rm4l1nk",
    "pdf":"https://quadernoapp.com/invoice/7hef1rs7p3rm4l1nk.pdf",
    "custom_metadata":{},
    "verification_code": "08V9SBg49G",
    "verification_permalink": "https://example.com/verification/08V9SBg49G"
  },

  {
    "id":"507693322f412e0e2e0000da",
    "number":"0000047",
    "issue_date":"2012-10-11",
    "created_at":"1325376020",
    "contact":{
      "id":"5073f9c22f412e02d00004cf",
      "full_name":"Teenage Mutant Ninja Turtles"
    },
    "country":"US",
    "street_line_1":"Melrose Ave, Sewer #3",
    "street_line_2":"",
    "city":"New York",
    "region":"New York",
    "postal_code":"",
    "po_number":null,
    "due_date":null,
    "currency":"USD",
    "exchange_rate":"0.680309",
    "items":[
      {
        "id":"481516234291",
        "description":"pizza",
        "quantity":"15.0",
        "unit_price_cents":"6000",
        "discount_rate":"0.0",
        "tax_1_name":"",
        "tax_1_rate":"",
        "tax_2_name":"",
        "tax_2_rate":"",
        "reference":"Even the bad ones taste good!",
        "subtotal_cents":"6000",
        "discount_cents":"0",
        "gross_amount_cents":"6000"
      }
    ],
    "subtotal_cents":"6000",
    "discount_cents":"0",
    "taxes":[],
    "total_cents":"6000",
    "payments":[],
    "payment_details":"",
    "notes":"",
    "state":"outstanding",
    "tag_list":["pizza", "turtles"],
    "secure_id":"7hes3c0ndp3rm4l1nk",
    "permalink":"https://ACCOUNT_NAME.quadernoapp.com/invoice/7hes3c0ndp3rm4l1nk",
    "pdf":"https://ACCOUNT_NAME.quadernoapp.com/invoice/7hes3c0ndp3rm4l1nk.pdf",
    "custom_metadata":{},
    "verification_code": "7XShGnyfgo",
    "verification_permalink": "https://example.com/verification/7XShGnyfgo"
  }
]

HTTP Request

GET /invoices

Parameters

Parameter	Type	Description
`q`	string	A case-sensitive filter on the list based on the invoice's number or customer name.
`date`	string	A case-sensitive filter on the list based on the invoice's issue date. Pass the date range in the url like `?date=DATE1,DATE2`. Date range allows these formats: `2019-01-01,2019-12-31` or `2019/01/01,2019/12/31`.
`state`	string	A case-sensitive filter on the list based on the invoice's state. Can be `outstanding`, `late`, `paid`, `refunded` and `archived`.
`contact`	integer	A case-sensitive filter on the list based on the customer's ID.

Credit Notes

A credit note is an official legal document used to notify your customer that credit is being applied. Usually a credit note is issued as a way to cancel out or correct an invoice by doing a full refund.

Credits always have an associated invoice which will be updated to state paid when the credit is created.

Create a credit

curl https://ACCOUNT_NAME.quadernoapp.com/api/credits \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  -d '{
    "invoice_id": 1
  }'

{
  "id": 3,
  "blocked": false,
  "number": "00001",
  "issue_date": "2021-09-23",
  "created_at": 1632386555,
  "related_document": {
    "id": 1,
    "type": "Invoice"
  },
  "contact": {
    "id": 1,
    "full_name": "John Smith"
  },
  "tax_id": null,
  "country": "ES",
  "street_line_1": null,
  "street_line_2": null,
  "city": null,
  "region": null,
  "postal_code": null,
  "po_number": null,
  "due_date": null,
  "currency": "USD",
  "subject": null,
  "exchange_rate": "0.852588",
  "items": [
    {
      "id": 4,
      "description": "Awesome ebook",
      "quantity": "1.0",
      "unit_price_cents": "1900.0",
      "discount_rate": "0.0",
      "tax_1_name": null,
      "tax_1_rate": 0.0,
      "tax_1_country": "US",
      "tax_1_region": "NY",
      "tax_1_transaction_type": "ebook",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": "US",
      "tax_2_region": "NY",
      "tax_2_transaction_type": "ebook",
      "reference": null,
      "subtotal_cents": "1900.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "1900.0"
    },
    {
      "id": 5,
      "description": "Awesome SaaS",
      "quantity": "1.0",
      "unit_price_cents": "8175.0",
      "discount_rate": "0.0",
      "tax_1_name": "Sales tax",
      "tax_1_rate": 8.875,
      "tax_1_country": "US",
      "tax_1_region": "NY",
      "tax_1_transaction_type": "saas",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": "US",
      "tax_2_region": "NY",
      "tax_2_transaction_type": "saas",
      "reference": null,
      "subtotal_cents": "8175.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "8175.0"
    }
  ],
  "subtotal_cents": "10075.0",
  "discount_cents": "0.0",
  "taxes": [
    {
      "label": "Sales tax (8.875%)",
      "rate": 8.875,
      "country": "US",
      "region": "NY",
      "transaction_type": "saas",
      "amount_cents": 725
    }
  ],
  "total_cents": 10800,
  "payments": [],
  "payment_details": null,
  "notes": null,
  "state": "outstanding",
  "tag_list": [
    "tag-a",
    "tag-b",
    "tag-c"
  ],
  "secure_id": "7hef1rs7p3rm4l1nk",
  "permalink": "https://ACCOUNT_NAME.quadernoapp.com/credit/b4a1539db4bca64f22a38c7f81e012a2555981dc",
  "pdf": "https://ACCOUNT_NAME.quadernoapp.com/credit/b4a1539db4bca64f22a38c7f81e012a2555981dc.pdf",
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/credits/3.json",
  "processor": null,
  "processor_id": null,
  "custom_metadata": {},
  "verification_code": "08V9SBg49G",
  "verification_permalink": "https://example.com/verification/08V9SBg49G"
}

HTTP Request

POST /credits

Parameters

Parameter	Type	Description
`invoice_id`	integer	The ID of the refunded invoice. Required
`credited_amount`	decimal	The total amount to be credited. Only for refunds of invoices with one single item. The credited amount must be equal or lower than the total amount of the related invoice.

Retrieve a credit

curl https://ACCOUNT_NAME.quadernoapp.com/api/credits/CREDIT_ID \
  -u YOUR_API_KEY:x

{
  "id":"507693322f412e0e2e0000da",
  "number":"0000047",
  "issue_date":"2012-10-11",
  "created_at":"1325376000",
  "related_document":{
    "id":999999,
    "type":"Invoice"
  },
  "contact":{
    "id":"5073f9c22f412e02d00004cf",
    "full_name":"Teenage Mutant Ninja Turtles"
  },
  "country":"US",
  "street_line_1":"Melrose Ave, Sewer #3",
  "street_line_2":"",
  "city":"New York",
  "region":"New York",
  "postal_code":"",
  "po_number":null,
  "due_date":null,
  "currency":"USD",
  "exchange_rate":"0.680309",
  "items":[
    {
      "id":"48151623429",
      "description":"pizza",
      "quantity":"15.0",
      "unit_price_cents":"6000",
      "discount_rate":"0.0",
      "tax_1_name":"",
      "tax_1_rate":"",
      "tax_2_name":"",
      "tax_2_rate":"",
      "reference":"Even the bad ones taste good!",
      "subtotal_cents":"6000",
      "discount_cents":"0",
      "gross_amount_cents":"6000"
    }
  ],
  "subtotal_cents":"6000",
  "discount_cents":"0",
  "taxes":[],
  "total_cents":"6000",
  "payments":[],
  "payment_details":"",
  "notes":"",
  "state":"outstanding",
  "tag_list":["lasagna", "cat"],
  "secure_id":"7hef1rs7p3rm4l1nk",
  "permalink":"https://ACCOUNT_NAME.quadernoapp.com/credit/7hef1rs7p3rm4l1nk",
  "pdf":"https://ACCOUNT_NAME.quadernoapp.com/credit/7hef1rs7p3rm4l1nk.pdf",
  "custom_metadata":{},
  "verification_code": "08V9SBg49G",
  "verification_permalink": "https://example.com/verification/08V9SBg49G"
}

HTTP Request

GET /credits/CREDIT_ID

Parameters

Parameter	Type	Description
`CREDIT_ID`	integer	The ID of the credit to retrieve. Required

Update a credit

curl https://ACCOUNT_NAME.quadernoapp.com/api/credits/CREDIT_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  -d '{ "notes": "You better pay this time, Tony",
        "custom_metadata": {
          "memo": "I think he is not paying again."
        }
      }'

{
  "id":"507693322f412e0e2e0000da",
  "number":"0000047",
  "issue_date":"2012-10-11",
  "created_at":"1325376000",
  "related_document":{
    "id":999999,
    "type":"Invoice"
  },
  "contact":{
    "id":"5073f9c22f412e02d00004cf",
    "full_name":"Teenage Mutant Ninja Turtles"
  },
  "country":"US",
  "street_line_1":"Melrose Ave, Sewer #3",
  "street_line_2":"",
  "city":"New York",
  "region":"New York",
  "postal_code":"",
  "po_number":null,
  "due_date":null,
  "currency":"USD",
  "exchange_rate":"0.680309",
  "items":[
    {
      "id":"48151623429",
      "description":"pizza",
      "quantity":"15.0",
      "unit_price_cents":"6000",
      "discount_rate":"0.0",
      "tax_1_name":"",
      "tax_1_rate":"",
      "tax_2_name":"",
      "tax_2_rate":"",
      "reference":"Even the bad ones taste good!",
      "subtotal_cents":"6000",
      "discount_cents":"0",
      "gross_amount_cents":"6000"
    }
  ],
  "subtotal_cents":"6000",
  "discount_cents":"0",
  "taxes":[],
  "total_cents":"6000",
  "payments":[],
  "payment_details":"",
  "notes":"",
  "state":"outstanding",
  "tag_list":["lasagna", "cat"],
  "secure_id":"7hef1rs7p3rm4l1nk",
  "permalink":"https://ACCOUNT_NAME.quadernoapp.com/credit/7hef1rs7p3rm4l1nk",
  "pdf":"https://ACCOUNT_NAME.quadernoapp.com/credit/7hef1rs7p3rm4l1nk.pdf",
  "custom_metadata":{},
  "verification_code": "08V9SBg49G",
  "verification_permalink": "https://example.com/verification/08V9SBg49G"
}

HTTP Request

PUT /credits/CREDIT_ID

In our goal to make Quaderno compliant with tax rules worldwide, the edition of credit notes is limited to: po_number, tag_list, payment_details, notes, custom_metadata and all those related to the billing address: street_line_1,street_line_2,city,region, and postal_code.

Parameters

Parameter	Type	Description
`CREDIT_ID`	integer	The ID of the credit to update. Required
`contact`	object	The data of the customer who was refunded.
`street_line_1`	string	The customer's billing address line 1 (Street address/PO Box).
`street_line_2`	string	The customer's billing address line 2 (Apartment/Suite/Unit/Building).
`city`	string	The customer's billing city.
`region`	string	The customer's billing state/province/region.
`postal_code`	string	The customer's billing ZIP or postal code. Available for updates.
`payment_processor`	string	The name of the payment processor used to refund the payment.
`payment_processor_id`	string	The ID of the transaction in the `payment_processor`.
`po_number`	string	The number of the related order.
`tag_list`	string	Multiple tags should be separated by commas
`payment_details`	string	Detailed information about the accepted payment methods.
`notes`	string	Extra notes about the credit.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.
`verification_code`	string	The code needed to validate the credit note, usually generated by tax authorities.
`verification_permalink`	string	The link needed to validate the credit note, usually generated by tax authorities.

Void a credit

As invoices cannot be deleted, you can "convert" an invoice into a credit note with POST /credits which takes the invoice id as parameter. In case you also need to correct this, mark the associated credit note as void using this endpoint.

curl https://ACCOUNT_NAME.quadernoapp.com/api/credits/CREDIT_ID/void \
  -u YOUR_API_KEY:x \
  -X PUT

HTTP Request

PUT /credits/CREDIT_ID/void

Parameters

Parameter	Type	Description
`CREDIT_ID`	integer	The ID of the credit to void. Required

Deliver a credit

Use this endpoint to send a credit note to your customer.

Emails will be sent from notifications@quaderno.io. If your customer replies to an invoice email, the reply will go to the email address you've set up on the business data page.

curl https://ACCOUNT_NAME.quadernoapp.com/api/credits/CREDIT_ID/deliver \
  -u YOUR_API_KEY:x

HTTP Request

GET /credits/CREDIT_ID/deliver

Parameters

Parameter	Type	Description
`CREDIT_ID`	integer	The ID of the credit to deliver. Required

List all credits

curl https://ACCOUNT_NAME.quadernoapp.com/api/credits \
  -u YOUR_API_KEY:x

[
  {
    "id":"507693322f412e0e2e00000f",
    "number":"0000047",
    "issue_date":"2012-10-11",
    "created_at":"1325376000",
    "related_document":{
      "id":999999,
      "type":"Invoice"
    },
    "contact":{
      "id":"5073f9c22f412e02d0000032",
      "full_name":"Garfield"
    },
    "country":"US",
    "street_line_1":"Street 23",
    "street_line_2":"",
    "city":"New York",
    "region":"New York",
    "postal_code":"10203",
    "po_number":null,
    "due_date":null,
    "currency":"USD",
    "exchange_rate":"0.680309",
    "items":[
      {
        "id":"48151623429",
        "description":"lasagna",
        "quantity":"25.0",
        "unit_price_cents":"375",
        "discount_rate":"0.0",
        "tax_1_name":"",
        "tax_1_rate":"",
        "tax_2_name":"",
        "tax_2_rate":"",
        "reference":"Awesome!",
        "subtotal_cents":"9375",
        "discount_cents":"0",
        "gross_amount_cents":"9375"
      }
    ],
    "subtotal_cents":"9375",
    "discount_cents":"0",
    "taxes":[],
    "total_cents":"9375",
    "payments":[
      {
        "id":"50aca7d92f412eda5200002c",
        "date":"2012-11-21",
        "payment_method":"credit_card",
        "payment_processor":"stripe",
        "payment_processor_id":"ch_19yUdh2eZvKYlo2CkFVBOZG7",
        "amount_cents":"9375",
        "url":"https://ACCOUNT_NAME.quadernoapp.com/api/credits/507693322f412e0e2e00000f/payments/50aca7d92f412eda5200002c.json"
      },
    ],
    "payment_details":"Ask Jon",
    "notes":"",
    "state":"paid",
    "tag_list":["lasagna", "cat"],
    "secure_id":"7hef1rs7p3rm4l1nk",
    "permalink":"https://quadernoapp.com/credit/7hef1rs7p3rm4l1nk",
    "pdf":"https://quadernoapp.com/credit/7hef1rs7p3rm4l1nk.pdf",
    "custom_metadata":{},
    "verification_code": "7XShGnyfgo",
    "verification_permalink": "https://example.com/verification/7XShGnyfgo"
  },

  {
    "id":"507693322f412e0e2e0000da",
    "number":"0000047",
    "issue_date":"2012-10-11",
    "created_at":"1325376020",
    "related_document":{
      "id":875978,
      "type":"Invoice"
    },
    "contact":{
      "id":"5073f9c22f412e02d00004cf",
      "full_name":"Teenage Mutant Ninja Turtles"
    },
    "country":"US",
    "street_line_1":"Melrose Ave, Sewer #3",
    "street_line_2":"",
    "city":"New York",
    "region":"New York",
    "postal_code":"",
    "po_number":null,
    "due_date":null,
    "currency":"USD",
    "exchange_rate":"0.680309",
    "items":[
      {
        "id":"481516234291",
        "description":"pizza",
        "quantity":"15.0",
        "unit_price_cents":"6000",
        "discount_rate":"0.0",
        "tax_1_name":"",
        "tax_1_rate":"",
        "tax_2_name":"",
        "tax_2_rate":"",
        "reference":"Even the bad ones taste good!",
        "subtotal_cents":"6000",
        "discount_cents":"0",
        "gross_amount_cents":"6000"
      }
    ],
    "subtotal_cents":"6000",
    "discount_cents":"0",
    "taxes":[],
    "total_cents":"6000",
    "payments":[],
    "payment_details":"",
    "notes":"",
    "state":"outstanding",
    "tag_list":["pizza", "turtles"],
    "secure_id":"7hes3c0ndp3rm4l1nk",
    "permalink":"https://ACCOUNT_NAME.quadernoapp.com/credit/7hes3c0ndp3rm4l1nk",
    "pdf":"https://ACCOUNT_NAME.quadernoapp.com/credit/7hes3c0ndp3rm4l1nk.pdf",
    "custom_metadata":{},
    "verification_code": "7XShGnyfgo",
    "verification_permalink": "https://example.com/verification/7XShGnyfgo"
  }
]

HTTP Request

GET /credits

Parameters

Parameter	Type	Description
`q`	string	A case-sensitive filter on the list based on the credit's number or customer name.
`date`	string	A case-sensitive filter on the list based on the credit's issue date. Pass the date range in the url like `?date=DATE1,DATE2`. Date range allows these formats: `2019-01-01,2019-12-31` or `2019/01/01,2019/12/31`.
`state`	string	A case-sensitive filter on the list based on the credit's state. Can be `outstanding`, `late`, `paid`, `void` and `archived`.

Expenses

Expenses are all the expenses that you receive from your providers.

Create an expense

curl https://ACCOUNT_NAME.quadernoapp.com/api/expenses \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
    "contact":{
      "id": 1249483
    },
    "items_attributes":[
      {
        "description":"Office supplies",
        "quantity":"30",
        "unit_price":"12.5",
        "tax_1_rate": "20",
        "tax_1_country": "GB",
        "tax_1_name": "VAT",
        "tax_1_transaction_type": "good"
      },
      {
        "description":"Snacks",
        "quantity":"10",
        "total_amount":"1000",
        "tax_1_rate": "20",
        "tax_1_country": "GB",
        "tax_1_name": "VAT",
        "tax_1_transaction_type": "good"
      }
    ],
    "payment_method": "cash"
  }'

{
  "id": 2009894,
  "blocked": false,
  "issue_date": "2021-09-27",
  "created_at": 1632729442,
  "contact": { // your provider contact info
    "id": 1249483,
    "full_name": "Susan Sanders"
  },
  "tax_id": null,
  "country": "GB",
  "street_line_1": null,
  "street_line_2": null,
  "city": null,
  "region": null,
  "postal_code": null,
  "po_number": null,
  "currency": "EUR",
  "subject": null,
  "items": [
    {
      "id": 5890331,
      "product_code": null,
      "description": "Office supplies",
      "quantity": "30.0",
      "unit_price_cents": "1250.0",
      "discount_rate": "0.0",
      "tax_1_name": "VAT",
      "tax_1_rate": 20.0,
      "tax_1_country": "GB",
      "tax_1_region": null,
      "tax_1_transaction_type": "good",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice", // safely to ignore as rate is null
      "reference": null,
      "subtotal_cents": "37500.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "37500.0"
    },
    {
      "id": 5890332,
      "product_code": null,
      "description": "Snacks",
      "quantity": "10.0",
      "unit_price_cents": "8333.0",
      "discount_rate": "0.0",
      "tax_1_name": "VAT",
      "tax_1_rate": 20.0,
      "tax_1_country": "GB",
      "tax_1_region": null,
      "tax_1_transaction_type": "good",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": null,
      "subtotal_cents": "83333.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "83333.0"
    }
  ],
  "subtotal_cents": "120833.0",
  "discount_cents": "0.0",
  "taxes": [ // summary of expense's calculated taxes
    {
      "label": "VAT (20%)",
      "name": "VAT",
      "rate": 20.0,
      "country": "GB",
      "region": null,
      "transaction_type": "good",
      "taxable_base_cents": "120833.0",
      "amount_cents": 24167
    }
  ],
  "total_cents": 145000,
  "payments": [
    {
      "id": 1412382,
      "date": "2021-09-27",
      "payment_method": "cash",
      "amount_cents": 145000,
      "url": "https://ACCOUNT_NAME.quadernoapp.com/api/expenses/2009894/payments/1412382.json"
    }
  ],
  "notes": null,
  "state": "paid",
  "tag_list": [],
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/expenses/2009894.json",
  "custom_metadata": {}
}

HTTP Request

POST /expenses

Parameters

Parameter	Type	Description
`issue_date`	date	The date of the expense's issue – not necessarily the date the products or services were provided.
`currency`	string	Three-letter ISO currency code, in uppercase. Defaults to the account's default currency.
`contact`	object	The data of the provider.
`items_attributes`	array	Array of document items. Required
`payment_method`	string	Use this parameter to mark this document as paid in a single request. Can be `credit_card`, `cash`, `wire_transfer`, `direct_debit`, `check`, `iou`, `paypal` or `other`
`payment_processor`	string	The name of the payment processor used to take the payment.
`payment_processor_id`	string	The ID of the transaction in the `payment_processor`.
`po_number`	string	The number of the related order.
`tag_list`	string	Multiple tags should be separated by commas
`notes`	string	Extra notes about the expense.
`attachment`	object	The data of the file to be attached.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.

Retrieve an expense

curl https://ACCOUNT_NAME.quadernoapp.com/api/expenses/EXPENSE_ID \
  -u YOUR_API_KEY:x

{
  "id": 2009894,
  "blocked": false,
  "issue_date": "2021-09-27",
  "created_at": 1632729442,
  "contact": {
    "id": 1249483,
    "full_name": "Susan Sanders"
  },
  "tax_id": null,
  "country": "GB",
  "street_line_1": null,
  "street_line_2": null,
  "city": null,
  "region": null,
  "postal_code": null,
  "po_number": null,
  "currency": "EUR",
  "subject": null,
  "items": [
    {
      "id": 5890331,
      "product_code": null,
      "description": "Office supplies",
      "quantity": "30.0",
      "unit_price_cents": "1250.0",
      "discount_rate": "0.0",
      "tax_1_name": "VAT",
      "tax_1_rate": 20.0,
      "tax_1_country": "GB",
      "tax_1_region": null,
      "tax_1_transaction_type": "good",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": null,
      "subtotal_cents": "37500.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "37500.0"
    },
    {
      "id": 5890332,
      "product_code": null,
      "description": "Snacks",
      "quantity": "10.0",
      "unit_price_cents": "8333.0",
      "discount_rate": "0.0",
      "tax_1_name": "VAT",
      "tax_1_rate": 20.0,
      "tax_1_country": "GB",
      "tax_1_region": null,
      "tax_1_transaction_type": "good",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": null,
      "subtotal_cents": "83333.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "83333.0"
    }
  ],
  "subtotal_cents": "120833.0",
  "discount_cents": "0.0",
  "taxes": [
    {
      "label": "VAT (20%)",
      "name": "VAT",
      "rate": 20.0,
      "country": "GB",
      "region": null,
      "transaction_type": "good",
      "taxable_base_cents": "120833.0",
      "amount_cents": 24167
    }
  ],
  "total_cents": 145000,
  "payments": [
    {
      "id": 1412382,
      "date": "2021-09-27",
      "payment_method": "cash",
      "amount_cents": 145000,
      "url": "https://ACCOUNT_NAME.quadernoapp.com/api/expenses/2009894/payments/1412382.json"
    }
  ],
  "notes": null,
  "state": "paid",
  "tag_list": [],
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/expenses/2009894.json",
  "custom_metadata": {}
}

HTTP Request

GET /expenses/EXPENSE_ID

Parameters

Parameter	Type	Description
`EXPENSE_ID`	integer	The ID of the expense to retrieve. Required

Update an expense

curl https://ACCOUNT_NAME.quadernoapp.com/api/expenses/EXPENSE_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  --header 'Content-Type: application/json' \
  --data '{
      "items_attributes":[
        {
          "id":5890402,
          "description": "2 Printer cartridges and consumable batteries."
        }
      ]
    }'

…
"items": [
  {
    "id": 5890402,
    "product_code": null,
    "description": "2 Printer cartridges and consumable batteries.", // updated data
    "quantity": "30.0",
    "unit_price_cents": "1250.0",
    "discount_rate": "0.0",
    "tax_1_name": "VAT",
    "tax_1_rate": 20.0,
    "tax_1_country": "GB",
    "tax_1_region": null,
    "tax_1_transaction_type": "good",
    "tax_2_name": null,
    "tax_2_rate": null,
    "tax_2_country": null,
    "tax_2_region": null,
    "tax_2_transaction_type": "eservice",
    "reference": null,
    "subtotal_cents": "37500.0",
    "discount_cents": "0.0",
    "gross_amount_cents": "37500.0"
  },
…

curl https://ACCOUNT_NAME.quadernoapp.com/api/expenses/EXPENSE_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  --header 'Content-Type: application/json' \
  --data '{
      "attachment": {
        "filename": "ticket.png",
        "data": "iVBORw0KGgo … " // do not include any `data:image/png;base64,` suffix on `data`
      }
    }'

HTTP Request

PUT /expenses/EXPENSE_ID

Parameters

Parameter	Type	Description
`EXPENSE_ID`	integer	The ID of the expense to update. Required
`issue_date`	date	The date of the expense's issue - not necessarily the date the products or services were provided.
`contact`	object	The data of the provider.
`items_attributes`	array	Array of expense items. Required
`payment_processor`	string	The name of the payment processor used to take the payment.
`payment_processor_id`	string	The ID of the transaction in the `payment_processor`.
`po_number`	string	The number of the related order.
`tag_list`	string	Multiple tags should be separated by commas
`notes`	string	Extra notes about the expense.
`attachment`	object	The data of the file to be attached.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.

Delete an expense

curl https://ACCOUNT_NAME.quadernoapp.com/api/expenses/EXPENSE_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /expenses/EXPENSE_ID

Parameters

Parameter	Type	Description
`EXPENSE_ID`	integer	The ID of the expense to delete. Required

List all expenses

curl https://ACCOUNT_NAME.quadernoapp.com/api/expenses \
  -u YOUR_API_KEY:x

[
  {
  "id": 2009927,
  "blocked": false,
  "issue_date": "2021-09-27",
  "created_at": 1632735325,
  "contact": {
    "id": 1249483,
    "full_name": "Susan Sanders"
  },
  "tax_id": null,
  "country": "GB",
  "street_line_1": null,
  "street_line_2": null,
  "city": null,
  "region": null,
  "postal_code": null,
  "po_number": null,
  "currency": "EUR",
  "subject": null,
  "items": [
    {
      "id": 5890402,
      "product_code": null,
      "description": "2 Printer cartridges and consumable batteries.",
      "quantity": "30.0",
      "unit_price_cents": "1250.0",
      "discount_rate": "0.0",
      "tax_1_name": "VAT",
      "tax_1_rate": 20.0,
      "tax_1_country": "GB",
      "tax_1_region": null,
      "tax_1_transaction_type": "good",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": null,
      "subtotal_cents": "37500.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "37500.0"
    },
    {
      "id": 5890403,
      "product_code": null,
      "description": "Snacks",
      "quantity": "10.0",
      "unit_price_cents": "8333.0",
      "discount_rate": "0.0",
      "tax_1_name": "VAT",
      "tax_1_rate": 20.0,
      "tax_1_country": "GB",
      "tax_1_region": null,
      "tax_1_transaction_type": "good",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": null,
      "subtotal_cents": "83333.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "83333.0"
    }
  ],
  "subtotal_cents": "120833.0",
  "discount_cents": "0.0",
  "taxes": [
    {
      "label": "VAT (20%)",
      "name": "VAT",
      "rate": 20.0,
      "country": "GB",
      "region": null,
      "transaction_type": "good",
      "taxable_base_cents": "120833.0",
      "amount_cents": 24167
    }
  ],
  "total_cents": 145000,
  "payments": [
    {
      "id": 1412412,
      "date": "2021-09-27",
      "payment_method": "cash",
      "amount_cents": 145000,
      "url": "https://ACCOUNT_NAME.quadernoapp.com/api/expenses/2009927/payments/1412412.json"
    }
  ],
  "notes": "Example note",
  "state": "paid",
  "tag_list": [],
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/expenses/2009927.json",
  "custom_metadata": {}
  },
  { … },
  { … }
]

HTTP Request

GET /expenses

Parameters

Parameter	Type	Description
`q`	string	A case-sensitive filter on the list based on the provider's name or the PO number.
`date`	string	A case-sensitive filter on the list based on the expense's issue date. Pass the date range in the url like `?date=DATE1,DATE2`. Date range allows these formats: `2019-01-01,2019-12-31` or `2019/01/01,2019/12/31`.
`state`	string	A case-sensitive filter on the list based on the expense's state. Can be `outstanding`, `late`, and `paid`.
`contact`	integer	A case-sensitive filter on the list based on the provider's ID.

Recurring Documents

A "recurring" is a special document that periodically renews itself, generating a recurring invoice or expense. You can use recurring documents to automatically send periodic invoices to your customers, or to track recurring business bills.

Create a recurring

curl https://ACCOUNT_NAME.quadernoapp.com/api/recurring \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
    "contact": {
      "id": 1251096
    },
    "items_attributes": [ {
      "product_code": "prod_consulting"
    } ],
    "payment_details": "Payment due upon receipt via wire transfer",
    "notes": "This recurring uses existing contact and products, and relies on defaults so that an invoice will be sent monthly."
  }'

{
  "id": 2010192,
  "recurring_document": "invoice",
  "start_date": "2021-10-28",
  "end_date": null,
  "frequency": "monthly",
  "recurring_period": "months",
  "recurring_frequency": 1,
  "contact": {
    "id": 1251096,
    "full_name": "Susan Sanders"
  },
  "po_number": null,
  "due_days": null,
  "currency": "EUR",
  "subject": null,
  "items": [
    {
      "id": 5890845,
      "product_code": "prod_consulting",
      "description": "Consultancy services",
      "quantity": "1.0",
      "unit_price_cents": "50000.0",
      "discount_rate": "0.0",
      "tax_1_name": null,
      "tax_1_rate": null,
      "tax_1_country": null,
      "tax_1_region": null,
      "tax_1_transaction_type": "eservice",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": "prod_consulting",
      "subtotal_cents": "50000.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "50000.0"
    }
  ],
  "subtotal": "50000.0",
  "discount": "0.0",
  "taxes": [],
  "total_cents": 50000,
  "payment_details": "Payment due upon receipt via wire transfer",
  "notes": "This recurring uses existing contact and products, and relies on defaults so that an invoice will be sent monthly.",
  "state": "active",
  "tag_list": [],
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/recurring/2010192.json",
  "custom_metadata": {}
}

HTTP Request

POST /recurring

Parameters

Parameter	Type	Description
`recurring_document`	string	Can be `invoice` or `expense`. Defaults to `invoice`
`start_date`	date	Date of the issue of the first document for this recurring. Defaults to 1 months from today.
`end_date`	date	Date of the issue of the last document for this recurring.
`frequency`	string	Can be `daily`, `weekly`, `biweekly`, `monthly`, `bimonthly`, `quarterly`, `semiyearly`, `yearly`, `biyearly`. Defaults to `monthly`.
`delivery`	string	Can be `send`, `create`, `nothing`. Defaults to `send`.
`currency`	string	Three-letter ISO currency code, in uppercase. Defaults to the account's default currency.
`contact`	object	The data of the customer or the provider.
`items_attributes`	array	Array of document items. Required
`po_number`	string	The number of the related order.
`tag_list`	string	Multiple tags should be separated by commas
`payment_details`	string	Detailed information about the accepted payment methods.
`notes`	string	Extra notes about the invoice.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.

Retrieve a recurring

curl https://ACCOUNT_NAME.quadernoapp.com/api/recurring/RECURRING_ID \
  -u YOUR_API_KEY:x

{
  "id": 2010192,
  "recurring_document": "invoice",
  "start_date": "2021-10-28",
  "end_date": null,
  "frequency": "monthly",
  "recurring_period": "months",
  "recurring_frequency": 1,
  "contact": {
    "id": 1251096,
    "full_name": "Susan Sanders"
  },
  "po_number": null,
  "due_days": null,
  "currency": "EUR",
  "subject": null,
  "items": [
    {
      "id": 5890845,
      "product_code": "prod_consulting",
      "description": "Consultancy services",
      "quantity": "1.0",
      "unit_price_cents": "50000.0",
      "discount_rate": "0.0",
      "tax_1_name": null,
      "tax_1_rate": null,
      "tax_1_country": null,
      "tax_1_region": null,
      "tax_1_transaction_type": "eservice",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": "prod_consulting",
      "subtotal_cents": "50000.0",
      "discount_cents": "0.0",
      "gross_amount_cents": "50000.0"
    }
  ],
  "subtotal": "50000.0",
  "discount": "0.0",
  "taxes": [],
  "total_cents": 50000,
  "payment_details": "Payment due upon receipt via wire transfer",
  "notes": "This recurring uses existing contact and products, and relies on defaults so that an invoice will be sent monthly.",
  "state": "active",
  "tag_list": [],
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/recurring/2010192.json",
  "custom_metadata": {}
}

HTTP Request

GET /recurring/RECURRING_ID

Parameters

Parameter	Type	Description
`RECURRING_ID`	integer	The ID of the recurring to retrieve. Required

Update a recurring

curl https://ACCOUNT_NAME.quadernoapp.com/api/recurring/RECURRING_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  --header 'Content-Type: application/json' \
  --data '{
      "items_attributes": [
        {
          "id": 5890845,
          "discount_rate": 10
        }
      ]
    }'

{
  "id": 2010192,
  "recurring_document": "invoice",
  "start_date": "2021-10-28",
  "end_date": null,
  "frequency": "monthly",
  "recurring_period": "months",
  "recurring_frequency": 1,
  "contact": {
    "id": 1251096,
    "full_name": "Susan Sanders"
  },
  "po_number": null,
  "due_days": null,
  "currency": "EUR",
  "subject": null,
  "items": [
    {
      "id": 5890845,
      "product_code": "prod_consulting",
      "description": "Consultancy services",
      "quantity": "1.0",
      "unit_price_cents": "50000.0",
      "discount_rate": "10.0", // updated data
      "tax_1_name": null,
      "tax_1_rate": null,
      "tax_1_country": null,
      "tax_1_region": null,
      "tax_1_transaction_type": "eservice",
      "tax_2_name": null,
      "tax_2_rate": null,
      "tax_2_country": null,
      "tax_2_region": null,
      "tax_2_transaction_type": "eservice",
      "reference": "prod_consulting",
      "subtotal_cents": "50000.0",
      "discount_cents": "5000.0",
      "gross_amount_cents": "45000.0"
    }
  ],
  "subtotal": "100000.0",
  "discount": "10000.0",
  "taxes": [],
  "total_cents": 90000,
  "payment_details": "Payment due upon receipt via wire transfer",
  "notes": "This recurring uses existing contact and products, and relies on defaults so that an invoice will be sent monthly.",
  "state": "active",
  "tag_list": [],
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/recurring/2010192.json",
  "custom_metadata": {}
}

You can modify all fields and items of the recurring to apply these changes on the next recurring documents. If you need to remove items from the recurring, use the parameter _destroy set to 1 as documented in document items.

HTTP Request

PUT /recurring/RECURRING_ID

Parameters

Parameter	Type	Description
`RECURRING_ID`	integer	The ID of the recurring to retrieve. Required
`end_date`	date	Date of the issue of the last document for this recurring.
`delivery`	string	Can be `send`, `create`, `nothing`. Defaults to `send`.
`currency`	string	Three-letter ISO currency code, in uppercase. Defaults to the account's default currency.
`contact`	object	The data of the customer or the provider.
`items_attributes`	array	Array of document items. Required
`po_number`	string	The number of the related order.
`tag_list`	string	Multiple tags should be separated by commas
`payment_details`	string	Detailed information about the accepted payment methods.
`notes`	string	Extra notes about the invoice.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.

Delete a recurring

curl https://ACCOUNT_NAME.quadernoapp.com/api/recurring/RECURRING_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /recurring/RECURRING_ID

Parameters

Parameter	Type	Description
`RECURRING_ID`	integer	The ID of the recurring to delete. Required

List all recurring

curl https://ACCOUNT_NAME.quadernoapp.com/api/recurring \
  -u YOUR_API_KEY:x

[
  {
    "id": 2010192,
    "recurring_document": "invoice",
    "start_date": "2021-10-28",
    "end_date": null,
    "frequency": "monthly",
    "recurring_period": "months",
    "recurring_frequency": 1,
    "contact": {
      "id": 1251096,
      "full_name": "Susan Sanders"
    },
    "po_number": null,
    "due_days": null,
    "currency": "EUR",
    "subject": null,
    "items": [
      {
        "id": 5890845,
        "product_code": "prod_consulting",
        "description": "Consultancy services",
        "quantity": "1.0",
        "unit_price_cents": "50000.0",
        "discount_rate": "10.0",
        "tax_1_name": null,
        "tax_1_rate": null,
        "tax_1_country": null,
        "tax_1_region": null,
        "tax_1_transaction_type": "eservice",
        "tax_2_name": null,
        "tax_2_rate": null,
        "tax_2_country": null,
        "tax_2_region": null,
        "tax_2_transaction_type": "eservice",
        "reference": "prod_consulting",
        "subtotal_cents": "50000.0",
        "discount_cents": "5000.0",
        "gross_amount_cents": "45000.0"
      }
    ],
    "subtotal": "100000.0",
    "discount": "10000.0",
    "taxes": [],
    "total_cents": 90000,
    "payment_details": "Payment due upon receipt via wire transfer",
    "notes": "This recurring uses existing contact and products, and relies on defaults so that an invoice will be sent monthly.",
    "state": "active",
    "tag_list": [],
    "url": "https://ACCOUNT_NAME.quadernoapp.com/api/recurring/2010192.json",
    "custom_metadata": {}
  },
  {…},
  {…}
]

HTTP Request

GET /recurring

Parameters

Parameter	Type	Description
`q`	string	A case-sensitive filter on the list based on the recurring's contact or PO number.
`date`	string	A case-sensitive filter on the list based on the invoice's issue date. Pass the date range in the url like `?date=DATE1,DATE2`. Date range allows these formats: `2019-01-01,2019-12-31` or `2019/01/01,2019/12/31`.
`state`	string	A case-sensitive filter on the list based on the invoice's state. Can be `active` and `archived`.
`contact`	integer	A case-sensitive filter on the list based on the contact's ID.

Document Items

Invoices, credits, and expenses are made up of one or more document items, created via an array of items_attributes on the Billing API.

Document items are internally equivalent to Products which use a slighty different API. However, both can be back-referenced via the product_code field.

Each document item has the following properties:

Parameter	Type	Description
`id`	integer	Unique identifier for the object. Available only for updates
`description`	string	An arbitrary string attached to the object. Often useful for displaying to users. Required
`product_code`	string	Code of an existing product. If present, you don't need to set the `description`.
`quantity`	decimal	Quantity of units for the document item. Defaults to 1.
`unit_price`	decimal	The unit price of the item before any discount or tax is applied. Required if `total_amount` is not passed.
`total_amount`	decimal	The total amount to be charged after discounts and taxes. Required if `unit_price` is not passed.
`discount_rate`	decimal	This represents the discount percent out of 100, if applicable.
`tax_1_name`	string	The name of the tax, if applicable. Required if `tax_1_rate` is present
`tax_1_rate`	decimal	The rate of the tax, if applicable. Required if `tax_1_name` is present
`tax_1_country`	string	Tax country, if applicable. Defaults to the contact's country
`tax_1_region`	string	Tax region, if applicable. Only for US sales tax and Canada GST.
`tax_1_transaction_type`	string	Type of transaction. Can be any `tax_code`. Defaults to the account's default tax class.
`tax_2_name`	string	The name of the additional tax, if applicable. Required if `tax_2_rate` is present
`tax_2_rate`	decimal	The rate of the additional tax, if applicable. Required if `tax_2_name` is present
`tax_2_country`	string	Tax country, if applicable. Defaults to the contact's country
`tax_2_region`	string	Tax region, if applicable. Only for US sales tax and Canada GST.
`tax_2_transaction_type`	string	Type of transaction. Can be any `tax_code`. Defaults to the account's default tax class.
`_destroy`	integer	Set it to 1 if you want to remove the document item selected by ID. Available only for updates.

Attachments

Invoices and expenses can have attached files. Each attachment has the following properties:

Parameter	Type	Description
`id`	integer	Unique identifier for the object. Available only for updates.
`data`	string	File data enconded in base64. Required.
`filename`	string	Name of the attached file. Required.
`public`	integer	Visibility of attached file. Public attachments can be seen and downloaded by customers. Defaults to false.

Payments

Payments in Quaderno-lingo represent the recording of a successful payment.

Like products, payments are a sub-object and can be attached to invoices, expenses and credits. However, payments cannot exist in Quaderno separately to an instance of one of these classes, and the same payment cannot be referenced by more than one instance.

Create a payment

curl https://ACCOUNT_NAME.quadernoapp.com/api/invoices/INVOICE_ID/payments \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
      "amount": 9.99,
      "payment_method": "credit_card" \
      "payment_processor": "stripe" \
      "payment_processor_id": "ch_19yUdxxxx"
    }'

{
  "id": 1412133,
  "date": "2021-09-24",
  "payment_method": "credit_card",
  "amount_cents": 999,
  "url": "https://ACCOUNT_NAME.quadernoapp.com/api/invoices/2009439/payments/1412133.json"
}

{
  "errors": {
    "amount": [
      "must be less than or equal to €109.09" // that import is the money pending to be paid on the invoice
    ]
  }
}

HTTP Request

POST /invoices/INVOICE_ID/payments

POST /expenses/EXPENSE_ID/payments

POST /credits/CREDIT_ID/payments

Parameters

Parameter	Type	Description
amount	decimal	Amount paid. Required
date	date	The date of the payment . Defaults to today.
payment_method	string	One of the following: `credit_card`, `cash`, `wire_transfer`, `direct_debit`, `check`, `iou`, `paypal` or `other`. Required
payment_processor	string	Payment processor that you used to process the payment.
payment_processor_id	string	The transaction ID that the payment processor assigned to the payment.

Delete a payment

curl https://ACCOUNT_NAME.quadernoapp.com/api/invoices/INVOICE_ID/payments/PAYMENT_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /invoices/INVOICE_ID/payments/PAYMENT_ID

DELETE /expenses/EXPENSE_ID/payments/PAYMENT_ID

DELETE /credits/CREDIT_ID/payments/PAYMENT_ID

CHECKOUT

Sessions

A Checkout Session represents your customer's session as they pay for one-time purchases or subscriptions through Quaderno Checkout.

Session objects transition through the following statuses: pending, processing, abandoned, failed, and completed. Abandoned sessions are automatically removed after seven days of inactivity.

After you create a Session, you may want to subscribe to its webhook to fulfill the order, learn more about this on this guide.

Create a Session

A Checkout Link is a permanent URL that spans a new Checkout Session for one-time purchases or subscriptions, like a template for creating your own online buying forms. With this API you can programatically create Checkout Sessions on the fly.

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/sessions \
  -u YOUR_API_KEY:x \
  -X POST \
  --header 'Content-Type: application/json' \
  --data '{
      "payment_methods": ["card"],
      "success_url": "https://example.com/success",
      "items": [{
         "product": "9969",
         "amount": 100.0,
         "name": "A product",
         "description": null,
         "currency": "USD",
         "quantity": 1
      }],
      "cancel_url": "https://example.com/canceled",
      "custom": {
         "stripe": {
            "metadata": {
               "notify_url": "xxx",
               "user_id": 999
            }
         }
      },
      "billing_details_collection": "auto",
      "customer": {
         "billing_city": "New York",
         "billing_country": "US",
         "billing_postal_code": "10128",
         "billing_street_line_1": "E 90th Street",
         "email": "anemail@example.com",
         "first_name": "Susan",
         "last_name": "Sanders",
         "tax_id": "123456789"
      }
   }'

{
  "id": 12901,
  "status": "pending",
  "billing_details_collection": "auto",
  "cancel_url": "https://example.com/canceled",
  "coupon_collection": false,
  "locale": "auto",
  "payment_methods": [
    "card"
  ],
  "success_url": "https://example.com/success",
  "custom": {
    "stripe": {
      "metadata": {
        "notify_url": "xxx",
        "user_id": "999"
      }
    }
  },
  "metadata": {},
  "processor": null,
  "processor_id": null,
  "items": [
    {
      "product": "9969",
      "amount": 100.0,
      "name": "A product",
      "description": null,
      "currency": "USD",
      "quantity": 1
    }
  ],
  "customer": {
    "billing_city": "New York",
    "billing_country": "US",
    "billing_postal_code": "10128",
    "billing_street_line_1": "E 90th Street",
    "billing_street_line_2": null,
    "company": null,
    "email": "anemail@example.com",
    "first_name": "Susan",
    "last_name": "Sanders",
    "tax_id": "123456789",
    "business_number": null
  },
  "permalink": "https://ACCOUNT_NAME.quadernoapp.com/checkout/session/xxxx"
}

HTTP Request

POST /checkout/sessions

Parameters

Parameter	Type	Description
`billing_details_collection`	string	The value for whether Checkout collected the customer’s billing details. Values are `auto` and `required` (default to `required`).
`cancel_url`	storing	The URL the customer will be redirected to if they decide to cancel the payment and return to your website. Required
`coupon_collection`	boolean	The value for whether Checkout collected coupons.
`custom`	object	Set of key-value pairs that you want to forward to the payment processor. This can be useful for setting up additional options in the payment processor. If you want to send specific data to one processor, you can create a subhash with the name of that particular processor. E.g.: `stripe: { metadata: { user_id: 999 } }, paypal: { no_shipping: 0 }`
`customer`	object	The customer's billing information. Check the attributes here.
`items`	array	The list of products purchased by the customer. Check the attributes here. Required
`locale`	string	The 2-letter ISO code of the language the Checkout is displayed in. Values are `auto`, `ca`, `de`, `en`, `es`, `fi`, `fr`, `hu`, `nl`, `sv`, and `no`.
`metadata`	object	Set of key-value pairs that you can attach to the session. This can be useful for storing additional information about the purchase.
`payment_methods`	array	Can be `card` or `paypal`.
`success_url`	string	The URL the customer will be redirected to after the payment is successful. Required

Here are the parameters for the Session's children objects:

Customer object parameters:

Parameter	Type	Description
`billing_city`	string	City/District/Suburb/Town/Village. Use this parameter to prefill customer data if you already have her city on file.
`billing_country`	string	2-letter country code. Use this parameter to prefill customer data if you already have her country on file.
`billing_postal_code`	string	ZIP or postal code. Use this parameter to prefill customer data if you already have her postal code on file.
`billing_street_line_1`	string	Address line 1 (Street address/PO Box). Use this parameter to prefill customer data if you already have her street address on file.
`billing_street_line_2`	string	Address line 2 (Apartment/Suite/Unit/Building). Use this parameter to prefill customer data if you already have her street address on file.
`contact`	integer	The ID of the Quaderno Contact. A new contact will be created unless an existing contact was provided in when the Checkout was created.
`company`	string	Customer company. Use this parameter to prefill customer data if you already have her company name on file.
`email`	string	Customer email. Use this parameter to prefill customer data if you already have an email on file.
`first_name`	string	Customer first name. Use this parameter to prefill customer data if you already have her first name on file.
`last_name`	string	Customer last name. Use this parameter to prefill customer data if you already have her last name on file
`tax_id`	string	Customer Tax ID. Use this parameter to prefill customer data if you already have a tax id on file.

Items object parameters:

Parameter	Type	Description
`amount`	number(decimal)	Unit price of the item being purchased. Defaults to the product's price is used if amount is not set.
`currency`	string	Three-letter ISO currency code, in uppercase. Must be a supported currency by the payment processor. Defaults to the product's currency is used if currency is not set.
`description`	string	The description of the item being purchased. Defaults to the product's description is used if description is not set.
`name`	string	The name of the item being purchased. Defaults to the product's name is used if name is not set.
`product`	string	The SKU of the Quaderno Product (`code` parameter from /items ). You need to create it first or use an existing one, or you'll get a `{"errors": {"items": ["Product code xxx is not defined"]}}` error. Required
`quantity`	integer	Quantity of the item being purchased. Minimum value is 1.

Retrieve a session

Retrieves the details of an existing session. You only need to supply the unique session identifier that was returned upon session creation.

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/sessions/SESSION_ID \
  -u YOUR_API_KEY:x

{
      "id":1,
      "status":"completed",
      "billing_details_collection":"required",
      "cancel_url":"http://go.back.com",
      "coupon_collection":true,
      "locale":"auto",
      "payment_methods":["card", "paypal"],
      "success_url":"http://success.com?prod=1",
      "custom":{},
      "items":[
         {
            "product":"prod_61ffa845b4a0b8",
            "amount":999.0,
            "name":"A test item",
            "description":"This a test item.",
            "currency":"EUR",
            "quantity":1
         }
      ],
      "customer":{
         "billing_city":"London",
         "billing_country":"GB",
         "billing_postal_code":"E1 6AN",
         "billing_street_line_1":"A street name",
         "billing_street_line_2":"",
         "company":"",
         "email":"john@doe.com",
         "first_name":"John",
         "last_name":"Doe",
         "tax_id":null
      },
      "metadata": {},
      "permalink":"https://ACCOUNT_NAME.quadernoapp.com/checkout/session/xxx"
   }

HTTP Request

GET /checkout/sessions/SESSION_ID

Parameters

Parameter	Type	Description
`SESSION_ID`	integer	The ID of the session to retrieve. Required

Update a session

Updates the specified session by setting new values for the parameters passed. Any parameters not provided will be left unchanged. Only pending sessions can be updated.

This request accepts mostly the same arguments as the session creation call, please refer to it for checking the accepted parameters.

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/sessions/SESSION_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  --header 'Content-Type: application/json' \
  --data '{
      "success_url": "https://example.com/new_success",
      "metadata": {
         "your_custom_metadata": "xxx"
      }
   }'

{
  "id": 12901,
  "status": "pending",
  "billing_details_collection": "auto",
  "cancel_url": "https://example.com/canceled",
  "coupon_collection": false,
  "locale": "auto",
  "payment_methods": [
    "card"
  ],
  "success_url": "https://example.com/new_success", // updated data included in the request
  "custom": {
    "stripe": {
      "metadata": {
        "notify_url": "xxx",
        "user_id": "999"
      }
    }
  },
  "metadata": { // new data included in the request
    "your_custom_metadata": "xxx"
  },
  "processor": null,
  "processor_id": null,
  "items": [
    {
      "product": "9969",
      "amount": 100.0,
      "name": "A product",
      "description": null,
      "currency": "USD",
      "quantity": 1
    }
  ],
  "customer": {
    "billing_city": "New York",
    "billing_country": "US",
    "billing_postal_code": "10128",
    "billing_street_line_1": "E 90th Street",
    "billing_street_line_2": null,
    "company": null,
    "email": "anemail@example.com",
    "first_name": "Susan",
    "last_name": "Sanders",
    "tax_id": "123456789",
    "business_number": null
  },
  "permalink": "https://ACCOUNT_NAME.quadernoapp.com/checkout/session/xxxx"
}

HTTP Request

PUT /checkout/sessions/SESSION_ID

Parameters

Please refer to Create a Session for checking the accepted parameters.

Delete a session

Permanently deletes a session. It cannot be undone. Only pending sessions can be deleted.

$ curl  https://quadernoapp.com/api/checkout/sessions/SESSION_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /checkout/sessions/SESSION_ID

Parameters

Parameter	Type	Description
`SESSION_ID`	integer	The ID of the session to delete. Required

List all sessions

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/sessions \
  -u YOUR_API_KEY:x

[
  {
    "id": 1,
    "status": "completed",
    "billing_details_collection": "required",
    "cancel_url": "https://example.com/canceled",
    "coupon_collection": false,
    "locale": "auto",
    "payment_methods": [
      "card"
    ],
    "success_url": "https://example.com/success",
    "custom": {},
    "metadata": {},
    "processor": "stripe",
    "processor_id": "pi_xxxx",
    "items": [
      {
        "product": "prod_226500ed1edc5c",
        "amount": 10000.0,
        "name": "A digital service",
        "description": null,
        "currency": "USD",
        "quantity": 1
      }
    ],
    "customer": {
      "billing_city": "New York",
      "billing_country": "US",
      "billing_postal_code": "10128",
      "billing_street_line_1": "E 90th Street",
      "billing_street_line_2": "",
      "company": "",
      "email": "anemail@example.com",
      "first_name": "Susan",
      "last_name": "Sanders",
      "tax_id": "123456789",
      "business_number": null
    },
    "permalink": "https://ACCOUNT_NAME.quadernoapp.com/checkout/session/xxxx"
  }
]

You can list all sessions, or list the sessions for a specific status. The sessions are returned sorted by creation date, with the most recently created sessions appearing first.

Returns an array of sessions. Each entry in the array is a separate session object. If no more sessions are available, the resulting array will be empty.

HTTP Request

GET /checkout/sessions

Parameters

Parameter	Type	Description
`status`	string	A case-sensitive filter on the list based on the session's status. Can be `pending`, `processing`, `abandoned`, `failed`, and `completed`.

Coupons

A coupon contains information about a percent-off or amount-off discount you might want to apply to a customer during a checkout.

Create a coupon

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/coupons \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
      "code": "SALES",
      "name": "",
      "percent_off": 20,
      "max_redemptions": 100,
      "redeem_by": "2021-11-01"
  }'

{
  "id": 2,
  "code": "SALES",
  "name": "",
  "percent_off": 20,
  "times_redeemed": null,
  "processor_id": "SALES",
  "amount_off_cents": null,
  "currency": null,
  "max_redemptions": 100,
  "redeem_by": "2021-11-01"
}

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/coupons \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
      "code": "FINAL",
      "amount_off": 10,
      "currency": "EUR",
      "max_redemptions": 10,
      "redeem_by": "2021-12-01"
  }'

{
  "id": 3,
  "code": "FINAL",
  "name": null,
  "percent_off": null,
  "times_redeemed": null,
  "processor_id": "FINAL",
  "amount_off_cents": 1000,
  "currency": "EUR",
  "max_redemptions": 10,
  "redeem_by": "2021-12-01"
}

HTTP Request

POST /checkout/coupons

Parameters

Parameter	Type	Description
`code`	string	The coupon's code. Required
`name`	string	Name of the coupon displayed to customers on invoices.
`percent_off`	decimal	Percent that will be taken off the subtotal of the purchase. For example, a coupon with `percent_off` of 50 will make a $100 purchase $50 instead. Required if `amount_off` is not passed.
`amount_off`	decimal	Amount (in the `currency` specified) that will be taken off the subtotal of the purchase. Required if `percent_off` is not passed.
`currency`	string	If `amount_off` has been set, the three-letter ISO currency code of the amount to take off, in uppercase. Must be a supported currency in your payment processors.
`redeem_by`	date	Date after which the coupon can no longer be redeemed.
`max_redemptions`	integer	Maximum number of times this coupon can be redeemed, in total, across all customers, before it is no longer valid.

Retrieve a coupon

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/coupons/COUPON_ID \
  -u YOUR_API_KEY:x

{
  "id": 8888,
  "code": "awesome",
  "name": "Awesome discount",
  "percent_off": 50,
  "times_redeemed": null,
  "processor_id": "awesome01",
  "amount_off_cents": null,
  "currency": null,
  "max_redemptions": null,
  "redeem_by": null
}

HTTP Request

GET /checkout/coupons/COUPON_ID

Parameters

Parameter	Type	Description
`COUPON_ID`	integer	The ID of the coupon to retrieve. Required

Update a coupon

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/coupons/COUPON_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  -d '{ "percent_off": 25 }'

{
  "id": 8888,
  "code": "awesome",
  "name": "Awesome discount",
  "percent_off": 25, // updated field
  "times_redeemed": null,
  "processor_id": "awesome01",
  "amount_off_cents": null,
  "currency": null,
  "max_redemptions": null,
  "redeem_by": null
}

Note that if you're using our Stripe integration, coupons are linked to Stripe coupons. Coupon edition won't be allowed as Stripe doesn't allow editions to their coupons.

HTTP Request

PUT /checkout/coupons/COUPON_ID

Parameters

Parameter	Type	Description
`COUPON_ID`	integer	The ID of the coupon to update. Required
`code`	string	The coupon's code. Required
`name`	string	Name of the coupon displayed to customers on invoices.
`percent_off`	decimal	Percent that will be taken off the subtotal of the purchase. For example, a coupon with `percent_off` of 50 will make a $100 purchase $50 instead. Required if `amount_off` is not passed.
`amount_off`	decimal	Amount (in the `currency` specified) that will be taken off the subtotal of the purchase. Required if `percent_off` is not passed.
`currency`	string	If `amount_off` has been set, the three-letter ISO currency code of the amount to take off, in uppercase. Must be a supported currency in your payment processors.
`redeem_by`	date	Date after which the coupon can no longer be redeemed.
`max_redemptions`	integer	Maximum number of times this coupon can be redeemed, in total, across all customers, before it is no longer valid.

Delete a coupon

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/coupons/COUPON_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /checkout/coupons/COUPON_ID

Parameters

Parameter	Type	Description
`COUPON_ID`	integer	The ID of the coupon to delete. Required

List all coupons

curl https://ACCOUNT_NAME.quadernoapp.com/api/checkout/coupons \
  -u YOUR_API_KEY:x

[
  {
    "id": 1,
    "code": "FALL21",
    "name": "",
    "percent_off": 20,
    "times_redeemed": null,
    "processor_id": "FALL21",
    "amount_off_cents": null,
    "currency": null,
    "max_redemptions": 100,
    "redeem_by": "2021-11-01"
  },
  {
    "id": 2,
    "code": "SALES",
    "name": "",
    "percent_off": 20,
    "times_redeemed": null,
    "processor_id": "SALES",
    "amount_off_cents": null,
    "currency": null,
    "max_redemptions": 100,
    "redeem_by": "2021-11-01"
  },
  {
    "id": 3,
    "code": "FINAL",
    "name": null,
    "percent_off": null,
    "times_redeemed": null,
    "processor_id": "FINAL",
    "amount_off_cents": 1000,
    "currency": "EUR",
    "max_redemptions": 10,
    "redeem_by": "2021-12-01"
  }
]

GETting from /checkout/coupons will return all the account's coupons.

CONNECT

Are you a marketplace platform? Quaderno Connect provides tax management and invoicing capabilities to your business model! Go check this step-by-step guide for details on using Quaderno Apps with Quaderno Connect Standard accounts.

Accounts (beta)

When using Quaderno Connect, you need to create an account (known as a connected account) for each user that needs to calculate taxes on your platform. These accounts are generally created when a user signs up for your platform.

Create an account

curl --request POST \
  --url https://ACCOUNT_NAME.quadernoapp.com/api/accounts/ \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
    "business_name": "Big Bang Inc.",
    "email": "bigbang@example.com",
    "country": "US",
    "postal_code": "10001",
    "local_tax_id": "123456789",
    "default_product_type": "service",
    "default_tax_code": "ebook"
  }'

{
  "id": 21791,
  "authentication": { // to be used to act on behalf of the new account
    "token_type": "Bearer",
    "access_token": "xxx", // expires on 25 days
    "refresh_token": "yyy" // does not expire on Custom accounts
  },
  "business_name": "Big Bang Inc.",
  "country": "US",
  "created_at": 1632212259,
  "currency": "USD",
  "default_product_type": "service",
  "default_tax_code": "ebook",
  "email": "bigbang@example.com",
  "local_tax_id": "123456789",
  "state": "active",
  "subdomain": "ninive-xxxx", // the new ACCOUNT_NAME for your merchant
  "type": "custom"
}

HTTP Request

POST /accounts

Parameters

Parameter	Type	Description
`business_name`	string	The account's business name. Required
`email`	string	The account's email address. Required
`country`	string	The account's country. 2-letter country code. Required
`postal_code`	string	The account's postal code. Recommended whether the account is based in the US or Canada to determine the state/province.
`currency`	string	The account's accounting currency. Defaults to the country's official currency.
`local_tax_id`	string	The account's tax ID. If set, the account will be registered for tax collection in the `country`'s jurisdiction.
`default_product_type`	string	The account's default product type to be used when no product type is specified on documents and tax calculations. Can be either `good` or `service`. Defaults to `service`.
`default_tax_code`	string	The account's default product type to be used when no tax code is specified on items and tax calculations. Can be any `tax_code`. Defaults to `eservice`.

Retrieve an account

curl https://ACCOUNT_NAME.quadernoapp.com/api/accounts/ACCOUNT_ID \
  -u YOUR_API_KEY:x \

  {
    "id": 6,
    "business_name": "Big Bang Inc.",
    "country": "US",
    "created_at": 1632213997,
    "currency": "USD",
    "default_product_type": "service",
    "default_tax_code": "ebook",
    "email": "bigbang@example.com",
    "local_tax_id": null,
    "state": "active",
    "subdomain": "assur-8680",
    "type": "custom"
  }

HTTP Request

GET /accounts/ACCOUNT_ID

Parameters

Parameter	Type	Description
`ACCOUNT_ID`	integer	The ID of the account to retrieve. Required

Update an account

curl https://ACCOUNT_NAME.quadernoapp.com/api/accounts/ACCOUNT_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  -d '{ "business_name": "Another Name Inc." }'

  {
    "id": 6,
    "business_name": "Another Name Inc.",
    "country": "US",
    "created_at": 1632213997,
    "currency": "USD",
    "default_product_type": "service",
    "default_tax_code": "ebook",
    "email": "bigbang@example.com",
    "local_tax_id": null,
    "state": "active",
    "subdomain": "assur-8680",
    "type": "custom"
  }

HTTP Request

PUT /accounts/ACCOUNT_ID

Parameters

Parameter	Type	Description
`ACCOUNT_ID`	integer	The ID of the account to retrieve. Required
`business_name`	string	The accounts's business name.
`email`	string	The account's email address.
`default_product_type`	string	The account's default product type to be used when no product type is specified on documents and tax calculations. Can be either `good` or `service`. Defaults to `service`.
`default_tax_code`	string	The account's default product type to be used when no tax code is specified on items and tax calculations. Can be any `tax_code`. Defaults to `eservice`.

List all accounts

curl https://ACCOUNT_NAME.quadernoapp.com/api/accounts \
  -u YOUR_API_KEY:x

[
  {
    "id": 6,
    "business_name": "Big Bang Inc.",
    "country": "US",
    "created_at": 1632213997,
    "currency": "USD",
    "default_product_type": "service",
    "default_tax_code": "ebook",
    "email": "bigbang@example.com",
    "local_tax_id": null,
    "state": "active",
    "subdomain": "assur-8680",
    "type": "custom"
  },
  …
]

HTTP Request

GET /accounts

TRANSACTIONS

Create a Transaction object to easily send sales & refunds from your platform to Quaderno. We'll use them to issue invoices & credit notes, as well as update tax reports automatically.

The Transactions API is perfect for use cases where your customers pay you in real time. It can be used together with Quaderno Connect. With Transactions API, you'll be able to issue the invoice with the payment information and create the contact or reference the existing contact in just one performant API call.

Create a transaction

curl https://ACCOUNT_NAME.quadernoapp.com/api/transactions \
  -u YOUR_API_KEY:x \
  -X POST \
  --header 'Content-Type: application/json' \
  --data '{
    "type": "sale",
    "customer": {
      "first_name": "John", 
      "last_name": "Smith",
      "email": "an_email@example.com"
    },
    "evidence": {
      "billing_country": "US",
      "ip_address": "255.255.255.255",
      "bank_country": "US"
    },
    "currency": "USD",
    "items": [
      {
        "description": "Awesome ebook",
        "quantity": 1,
        "amount": 19,
        "tax": {
          "city": null,
          "country": "US",
          "county": null,
          "currency": "USD",
          "name": null,
          "notes": null,
          "notice": "",
          "product_type": "service",
          "rate": 0.0,
          "region": "NY",
          "tax_behavior": "exclusive",
          "tax_code": "ebook",
          "taxable_part": null,
          "import": true,
          "subtotal": null,
          "tax_amount": null,
          "total_amount": null
        }
      },
      {
        "description": "Awesome SaaS",
        "quantity": 1,
        "amount": 89,
        "tax": {
          "city": "NEW YORK",
          "country": "US",
          "county": "NEW YORK",
          "currency": "USD",
          "name": "Sales tax",
          "notes": null,
          "notice": "",
          "product_type": "service",
          "rate": 8.875,
          "region": "NY",
          "tax_behavior": "exclusive",
          "tax_code": "saas",
          "taxable_part": 100.0,
          "import": true,
          "subtotal": null,
          "tax_amount": null,
          "total_amount": null
        }
      }
    ], 
    "payment": {
      "method": "credit_card",
      "processor": "aPaymentProcessor",
      "processor_id": "ch_xxxxx"
    },
    "processor": "your-user-agent",
    "processor_id": "your-internal-request-id",
    "po_number": "PO_xxxxxx",
    "tags": "tag-a,tag-b,tag-c",
    "custom_metadata": {
      "anything_you_want": "extra info"
    }
  }'

{
  "id": 2008034,
  "contact": {
    "id": 1248822,
    "city": null,
    "country": "ES",
    "created_at": 1631884113,
    "email": "an_email@example.com",
    "first_name": "John",
    "full_name": "John Smith",
    "kind": "person",
    "language": "ES",
    "last_name": "Smith",
    "notes": null,
    "permalink": "https://ACCOUNT_NAME.quadernoapp.com/billing/th3p3rm4l1nk?otp=xxx",
    "phone_1": null,
    "postal_code": null,
    "processor": null,
    "processor_id": null,
    "region": null,
    "street_line_1": null,
    "street_line_2": null,
    "tax_id": null,
    "web": null
  },
  "created_at": 1631884142,
  "currency": "USD",
  "custom_metadata": {
    "anything_you_want": "extra info"
  },
  "discount_cents": 0,
  "evidence": {
    "bank_country": "US",
    "billing_country": "US",
    "created_at": 1631884142,
    "ip_address": "255.255.255.255",
    "ip_country": null,
    "state": "confirmed"
  },
  "issue_date": "2021-09-17",
  "items": [
    {
      "id": 5888097,
      "created_at": 1631884142,
      "description": "Awesome ebook",
      "discount_cents": 0,
      "discount_rate": 0.0,
      "product_code": null,
      "quantity": 1.0,
      "subtotal_cents": 1900,
      "total_amount_cents": 1900,
      "unit_price": 19.0
    },
    {
      "id": 5888098,
      "created_at": 1631884142,
      "description": "Awesome SaaS",
      "discount_cents": 0,
      "discount_rate": 0.0,
      "product_code": null,
      "quantity": 1.0,
      "subtotal_cents": 8175,
      "tax_code": "saas",
      "tax_country": "US",
      "tax_name": "Sales tax",
      "tax_rate": 8.875,
      "tax_region": "NY",
      "taxable_part": "100.0",
      "total_amount_cents": 8900,
      "unit_price": 81.75
    }
  ],
  "notes": null,
  "number": "00019",
  "payments": [
    {
      "id": 1410566,
      "amount_cents": 10800,
      "created_at": 1631884142,
      "date": "2021-09-17",
      "payment_method": "credit_card",
      "processor": "aPaymentProcessor", // Payment processor
      "processor_id": "ch_xxxxx"
    }
  ],
  "pdf": "https://quadernoapp.com/invoice/th3p3rm4l1nk.pdf?otp=xxx&q=yyy",
  "permalink": "https://quadernoapp.com/invoice/th3p3rm4l1nk?otp=xxx&q=yyy",
  "po_number": "PO_xxxxxx",
    "processor": "Insomnia for API testing", // Transaction processor (your user-agent)
    "processor_id": "example_transactions-api_piped", // use this to backtrack your API calls
  "state": "outstanding",
  "subtotal_cents": 10075,
  "tags": "tag-a, tag-b, tag-c",
  "taxes": [
    {
      "amount_cents": 725,
      "country": "US",
      "label": "Sales tax (8.875%)",
      "rate": 8.875,
      "region": "NY",
      "tax_code": "saas"
    }
  ],
  "total_cents": 10800,
  "type": "Invoice"
}

HTTP Request

POST /transactions

Parameters

To comply with tax legislations around the world, we highly recommend that you always send the location evidences with the evidence param, so that Quaderno can store those for you. Learn more in our Support Center article.

It's also a good idea to use the processor parameter as kind of an "user-agent" to help us track any issues, as well as processor_id and po_number so that you can match API calls with your own platform transactions and Product Orders in the future.

Transaction parameters:

Parameter	Type	Description
`type`	string	The transaction's type. Can be `sale` and `refund`. Defaults to `sale`.
`date`	date	The transaction's date. Defaults to today.
`customer`	object	The data of the customer who paid the transaction. You can reference an existing contact by its id, or pass the json object to create a new contact.
`shipping_address`	object	The mailing address to where the order will be shipped. Use it if the order contains physical goods.
`currency`	string	Three-letter ISO currency code, in uppercase. Defaults to the account's default currency.
`items`	array	The individual items that make up the transaction. See parameters below. Required
`payment`	object	Detailed information about the transaction payment. See parameters below. Required
`processor`	string	The name of the platform that processed the transaction. E.g. shopify, woocommerce… Recommended
`processor_id`	string	The ID of the transaction in the `processor`. Recommended
`evidence`	object	Location evidence of the customer's residence. See parameters below. Highly recommended
`po_number`	string	The number of the related order. Recommended
`tags`	string	Tags attached to the transaction, formatted as a string of comma-separated values. Tags are additional short descriptors, commonly used for filtering and searching. Each individual tag is limited to 40 characters in length.
`notes`	string	Optional notes attached to the transaction.
`custom_metadata`	hash	Set of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. You can have up to 20 keys, with key names up to 40 characters long and values up to 500 characters long.

Transaction item parameters:

Parameter	Type	Description
`product_code`	string	Code of an existing product. If present, you don't need to set the description.
`description`	string	An arbitrary string attached to the object. Often useful for displaying to users. Required.
`quantity`	integer	Quantity of units for the transaction item. Defaults to 1.
`discount_rate`	integer	This represents the discount percent out of 100 included in the `amount`, if applicable.
`tax`	object	The tax rates which apply to the transaction item. Use the response from the tax calculation endpoint.
`amount`	decimal	Total amount (in the `currency` specified) of the transaction item. This should always be equal to the amount charged after discounts and taxes. Required.

Transaction payment parameters:

Parameter	Type	Description
`method`	string	The payment method used to pay the transaction. Can be `credit_card`, `cash`, `wire_transfer`, `direct_debit`, `check`, `iou`, `paypal` or `other` Defaults to `other`.
`processor`	string	The name of the payment processor used to take the payment. E.g. stripe, paypal…
`processor_id`	string	The ID of the transaction in the `processor`.

Transaction evidence parameters:

Parameter	Type	Description
`billing_country`	string	Customer's billing country (2-letter ISO code)
`ip_address`	string	Customer's IP address
`bank_country`	string	Customer's bank country (2-letter ISO code)

REPORTING

Report Requests

Every time you need to generate a Quaderno report, you need to create a report request with specific parameters. When the report has finished running, GETting the request id will give you the reference to the file where you can retrieve your results.

Create a request

curl https://ACCOUNT_NAME.quadernoapp.com/api/reporting/requests \
  -u YOUR_API_KEY:x \
  --header 'Content-Type: application/json' \
  --data '{
    "report_type": "tax_summary",
    "parameters": {
      "from_date": "2021-09-01",
      "to_date": "2021-09-30"
    }
  }'

{
  "id": 8, // use the request id to get the final file later
  "created_at": 1632988001,
  "parameters": {
    "from_date": "2021-09-01",
    "to_date": "2021-09-30"
  },
  "report_type": "tax_summary",
  "report_url": null, // always null at first
  "state": "pending"
}

HTTP Request

POST /reporting/requests

Parameters

Parameter	Type	Description
`report_type`	string	The type of report. Can be `tax_summary`, `invoices_list` or `credits_list`. Required
`parameters`	string	Parameters specifying how the report should be run. Different report types have different required and optional parameters.

Parameters for tax summary, invoices list, and credits list:

Parameter	Type	Description
`from_date`	date	Starting date of data to be included in the report. Required
`to_date`	date	Ending date of data to be included in the report. Required

Retrieve a request

After a while from creating the report request, the file will be ready. Use the request id to get it.

curl https://ACCOUNT_NAME.quadernoapp.com/api/reporting/requests/REQUEST_ID \
  -u YOUR_API_KEY:x

{
  "id": 41,
  "completed_at": 1633519917,
  "created_at": 1633519917,
  "parameters": {
    "from_date": "2021-09-01",
    "to_date": "2021-09-30"
  },
  "report_type": "tax_summary",
  "report_url": "https://quaderno.s3.amazonaws.com/reports/41/xxxxxxx",
  "state": "succeeded"
}

HTTP Request

GET /reporting/requests/REQUEST_ID

Parameters

Parameter	Type	Description
`REQUEST_ID`	integer	The ID of the request to retrieve. Required

List all requests

curl https://ACCOUNT_NAME.quadernoapp.com/api/reporting/requests \
  -u YOUR_API_KEY:x

[
  {
    "id": 1,
    "completed_at": 1612351337,
    "created_at": 1612351337,
    "parameters": {
      "from_date": "2020-10-01",
      "to_date": "2020-12-31"
    },
    "report_type": "tax_summary",
    "report_url": "https://quaderno.s3.amazonaws.com/reports/xxxxxxxxx",
    "state": "succeeded"
  },
  {
    "id": 32,
    "created_at": 1632993561,
    "error": "invalid date", // this report failed because september has 30 days, not 31
    "parameters": {
      "from_date": "2021-09-01",
      "to_date": "2021-09-31"
    },
    "report_type": "tax_summary",
    "report_url": null,
    "state": "failed"
  }
]

HTTP Request

GET /reporting/requests

WEBHOOKS

Webhooks Endpoints

Webhooks refers to a combination of elements that collectively create a notification and reaction system within a larger integration.

Metaphorically, webhooks are like a phone number that Quaderno calls to notify you of activity in your Quaderno account. The activity could be the creation of a new customer or the payment of an invoice. The webhook endpoint is the person answering that call who takes actions based upon the specific information it receives.

Non-metaphorically, the webhook endpoint has an associated URL (e.g., https://example.com/webhooks) and is just more code on your server, which could be written in Ruby, PHP, Node.js, or whatever.

The Quaderno notifications are Event objects. This Event object contains all the relevant information about what just happened, including the type of event and the data associated with that event. The webhook endpoint uses the event details to take any required actions, such as indicating that an order should be fulfilled.

Create a webhook

curl https://ACCOUNT_NAME.quadernoapp.com/api/webhooks \
  -u YOUR_API_KEY:x \
  -d '{
        "url": "https://webhook.site/6e76b64d-584c-4910-8ec6-xxxx",
        "events_types": ["invoice.created", "invoice.updated" ]
      }'

{
  "id": 2156,
  "url": "https://webhook.site/6e76b64d-584c-4910-8ec6-xxxx",
  "auth_key": "xxxx",
  "events_types": [
    "invoice.created",
    "invoice.updated"
  ],
  "last_sent_at": null,
  "last_error": null,
  "events_sent": 0,
  "created_at": "2021-09-30T07:57:34.000Z",
  "updated_at": "2021-09-30T07:57:34.000Z"
}

HTTP Request

POST /webhooks

Parameters

Parameter	Type	Description
`url`	string	The destination URL of the webhook request. Required
`events_types`	array	An array of strings indicating which events you wish to subscribe to. Check the available event types here. Required

Webhook URLs should be set up to accept HEAD and POST requests. When you provide the URL where you want Quaderno to POST the data for events, we'll do a quick check that the URL exists by using a HEAD request (not POST).

If the URL doesn't exist or returns something other than a 200 HTTP response to the HEAD request, Quaderno won't be able to verify that the URL exists and is valid.

This will return 201 Created with the current JSON representation of the webhook if the creation was a success.

Retrieve a webhook

curl https://ACCOUNT_NAME.quadernoapp.com/api/webhooks/WEBHOOK_ID \
  -u YOUR_API_KEY:x

{
    "id": 3,
    "url": "http://anotherapp.com/notifications",
    "auth_key": "xxxx",
    "events:_types": ["invoice.created","contact.deleted"],
    "last_sent_at": "2021-10-06T11:43:44.000Z",
    "last_error": null,
    "events_sent": 10,
    "created_at": "2013-07-13T14:12:01Z",
    "updated_at": "2013-07-17T14:09:59Z"
}

HTTP Request

GET /webhooks/WEBHOOK_ID

Parameters

Parameter	Type	Description
`WEBHOOK_ID`	integer	The ID of the webhook to retrieve. Required

Update a webhook

curl https://ACCOUNT_NAME.quadernoapp.com/api/webhooks/WEBHOOK_ID \
  -u YOUR_API_KEY:x \
  -X PUT \
  -d '{
        "url": "https://webhook.site/6e76b64d-584c-4910-8ec6-xxxx",
        "events_types": ["contact.updated", "contact.created" ]
      }'

{
    "id": 3,
    "url": "http://anotherapp.com/notifications",
    "auth_key": "xxxx",
    "events:_types": ["contact.updated", "contact.created"],
    "last_sent_at": null,
    "last_error": null,
    "events_sent": null,
    "created_at": "2013-07-13T14:12:01Z",
    "updated_at": "2013-07-17T14:09:59Z"
}

HTTP Request

PUT /webhooks/WEBHOOK_ID

Parameters

Parameter	Type	Description
`WEBHOOK_ID`	integer	The ID of the webhook to retrieve. Required
`url`	string	The destination URL of the webhook request. Required
`events_types`	array	An array of strings indicating which events you wish to subscribe to. Check the available event types here. Required

Delete a webhook

curl https://ACCOUNT_NAME.quadernoapp.com/api/webhooks/WEBHOOK_ID \
  -u YOUR_API_KEY:x \
  -X DELETE

HTTP Request

DELETE /webhooks/WEBHOOK_ID

Parameters

Parameter	Type	Description
`WEBHOOK_ID`	integer	The ID of the webhook to delete. Required

List all webhooks

curl https://ACCOUNT_NAME.quadernoapp.com/api/webhooks \
  -u YOUR_API_KEY:x

[
  {
    "id": 2,
    "url": "https://myawesomeapp.com/notifications",
    "auth_key": "xxxx",
    "events": ["contact.created", "contact.updated"],
    "last_sent_at": "2013-05-18T11:11:11Z",
    "last_error": null,
    "events_sent": null,
    "created_at": "2013-05-17T14:08:05Z",
    "updated_at": "2013-05-17T14:08:05Z"
  }
  {
    "id": 3,
    "url": "http://anotherapp.com/notifications",
    "auth_key": "xxxx",
    "events:_types": ["invoice.created", "contact.deleted"],
    "last_sent_at": "2021-10-06T11:43:44.000Z",
    "last_error":  null,
    "events_sent":  10,
    "created_at": "2013-07-13T14:12:01Z",
    "updated_at": "2013-07-17T14:09:59Z"
  }
]

HTTP Request

GET /webhooks

Webhook payload examples

{
  "event_type": "invoice.created",
  "account_id": 21417,
  "data": {
    "object": {
      "evidence": null,
      "id": 2012730,
      "contact_id": 1247386,
      "tag_list": [],
      "number": "00023",
      "issue_date": "2021-10-06",
      "contact_name": "John",
      "currency": "EUR",
      "gross_amount_cents": 9910,
      "total_cents": 11800,
      "amount_paid_cents": 0,
      "po_number": null,
      "payment_details": null,
      "notes": null,
      "state": "outstanding",
      "subject": null,
      "street_line_1": null,
      "street_line_2": null,
      "city": null,
      "postal_code": null,
      "region": null,
      "country": "ES",
      "tax_id": null,
      "processor_id": null,
      "processor": null,
      "processor_fee_cents": null,
      "custom_metadata": {},
      "due_date": null,
      "permalink": "a760b05e7fa068792b8c0f6dcc04b2b8ce856960",
      "contact": {
        "first_name": "John",
        "last_name": null,
        "email": null,
        "contact_person": null
      },
      "gross_amount": "99.10",
      "total": "118.00",
      "amount_paid": "0.00",
      "exchange_rate": "1.000000",
      "items": [
        {
          "id": 5894250,
          "product_code": "prod_ebook1",
          "description": "How to live with taxes",
          "quantity": "1.0",
          "unit_price": "9.1",
          "discount_rate": "0.0",
          "tax_1_amount_cents": 0,
          "tax_1_name": "",
          "tax_1_rate": 0,
          "tax_1_country": "",
          "tax_2_amount_cents": 0,
          "tax_2_name": "",
          "tax_2_rate": 0,
          "tax_2_country": "",
          "subtotal_cents": "910.0",
          "total_amount_cents": 910,
          "discount_cents": "0.0",
          "taxes_included": false,
          "reference": "prod_ebook1",
          "tax_1_amount": "0.00",
          "tax_2_amount": "0.00",
          "unit_price_cents": "910.00",
          "discount": "0.00",
          "subtotal": "9.10",
          "total_amount": "9.10"
        },
        {
          "id": 5894251,
          "product_code": "prod_zzz",
          "description": "A new product example",
          "quantity": "1.0",
          "unit_price": "100.0",
          "discount_rate": "10.0",
          "tax_1_amount_cents": 1890,
          "tax_1_name": "IVA",
          "tax_1_rate": 21,
          "tax_1_country": "ES",
          "tax_2_amount_cents": 0,
          "tax_2_name": "",
          "tax_2_rate": 0,
          "tax_2_country": "",
          "subtotal_cents": "10000.0",
          "total_amount_cents": 10890,
          "discount_cents": "1000.0",
          "taxes_included": false,
          "reference": "prod_zzz",
          "tax_1_amount": "18.90",
          "tax_2_amount": "0.00",
          "unit_price_cents": "10000.00",
          "discount": "10.00",
          "subtotal": "100.00",
          "total_amount": "108.90"
        }
      ],
      "payments": []
    }
  }
}

In this example, the user duplicated an invoice using the App, so the configured URL for receiving our Webhook responses received a POST with a header x-quaderno-signature: containing the auth_key.

You can see the whole body payload of its related invoice.created event on the right.

Another useful example would be registering for tax thresholds events, like threshold.warning and threshold.exceeded.

Here it is a body payload response example:

{
  "event_type": "threshold.warning",
  "account_id": 20988,
  "data": {
    "object": {
      "name": "90%",
      "country": "AU",
      "region": null,
      "postal_code": null,
      "date": "2021-10-08T08:43:48.000Z"
    }
  }
}