Quaderno

Quaderno Invoices API

Sales invoices issued to customers.

Documentation GitHub OpenAPI

Business capability

Accounts Receivable Management BC-200.30

Operations 6

GET /invoices.json List invoices #

POST /invoices.json Create an invoice #

GET /invoices/{id}.json Retrieve an invoice #

PUT /invoices/{id}.json Update an invoice #

DELETE /invoices/{id}.json Delete an invoice #

GET /invoices/{id}/deliver.json Deliver an invoice by email #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Quaderno Invoices API
  description: The Quaderno API is a REST API for tax compliance, invoicing, and sales tax / VAT automation.
  version: '1.0'
  contact:
    name: Quaderno
    url: https://developers.quaderno.io
  license:
    name: Proprietary
    url: https://quaderno.io/terms/
servers:
- url: https://{account}.quadernoapp.com/api
  description: Production (account-scoped)
  variables:
    account:
      default: ACCOUNT_NAME
      description: Your Quaderno account subdomain.
security:
- basicAuth: []
tags:
- name: Invoices
  description: Sales invoices issued to customers.
paths:
  /invoices.json:
    get:
      operationId: listInvoices
      tags:
      - Invoices
      summary: List invoices
      parameters:
      - $ref: '#/components/parameters/Page'
      - name: q
        in: query
        required: false
        description: Full-text search across invoice fields.
        schema:
          type: string
      - name: state
        in: query
        required: false
        description: Filter by invoice state.
        schema:
          type: string
      responses:
        '200':
          description: A list of invoices.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Invoice'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createInvoice
      tags:
      - Invoices
      summary: Create an invoice
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/InvoiceInput'
      responses:
        '201':
          description: The created invoice.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
        '422':
          $ref: '#/components/responses/ValidationError'
  /invoices/{id}.json:
    parameters:
    - $ref: '#/components/parameters/Id'
    get:
      operationId: getInvoice
      tags:
      - Invoices
      summary: Retrieve an invoice
      responses:
        '200':
          description: The requested invoice.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateInvoice
      tags:
      - Invoices
      summary: Update an invoice
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/InvoiceInput'
      responses:
        '200':
          description: The updated invoice.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Invoice'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteInvoice
      tags:
      - Invoices
      summary: Delete an invoice
      responses:
        '204':
          description: The invoice was deleted.
        '404':
          $ref: '#/components/responses/NotFound'
  /invoices/{id}/deliver.json:
    parameters:
    - $ref: '#/components/parameters/Id'
    get:
      operationId: deliverInvoice
      tags:
      - Invoices
      summary: Deliver an invoice by email
      description: Sends the invoice to the contact's email address.
      responses:
        '200':
          description: Delivery accepted.
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    Payment:
      allOf:
      - $ref: '#/components/schemas/PaymentInput'
      - type: object
        properties:
          id:
            type: string
    PaymentInput:
      type: object
      required:
      - amount
      properties:
        amount:
          type: number
        payment_method:
          type: string
          enum:
          - credit_card
          - cash
          - wire_transfer
          - direct_debit
          - check
          - paypal
          - other
        date:
          type: string
    Invoice:
      allOf:
      - $ref: '#/components/schemas/InvoiceInput'
      - type: object
        properties:
          id:
            type: string
          number:
            type: string
          issue_date:
            type: string
          state:
            type: string
          subtotal:
            type: number
          taxes:
            type: number
          total:
            type: number
          payments:
            type: array
            items:
              $ref: '#/components/schemas/Payment'
          permalink:
            type: string
    DocumentItem:
      type: object
      description: A line item on a document.
      properties:
        description:
          type: string
        quantity:
          type: number
        unit_price:
          type: number
        discount_rate:
          type: number
        tax_1_name:
          type: string
        tax_1_rate:
          type: number
        tax_code:
          type: string
        reference:
          type: string
    InvoiceInput:
      type: object
      required:
      - contact_id
      properties:
        contact_id:
          type: string
        contact:
          $ref: '#/components/schemas/ContactInput'
        po_number:
          type: string
        currency:
          type: string
          description: ISO 4217 currency code.
        tag_list:
          type: string
        payment_method:
          type: string
        items_attributes:
          type: array
          items:
            $ref: '#/components/schemas/DocumentItem'
        notes:
          type: string
    ContactInput:
      type: object
      required:
      - kind
      properties:
        kind:
          type: string
          enum:
          - company
          - person
          description: Whether the contact is a company or a person.
        first_name:
          type: string
        last_name:
          type: string
        contact_name:
          type: string
        street_line_1:
          type: string
        city:
          type: string
        postal_code:
          type: string
        region:
          type: string
        country:
          type: string
          description: ISO 3166-1 alpha-2 country code.
        email:
          type: string
        tax_id:
          type: string
    Error:
      type: object
      properties:
        error:
          type: string
        errors:
          type: object
          additionalProperties: true
  responses:
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    ValidationError:
      description: The request payload failed validation.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  parameters:
    Id:
      name: id
      in: path
      required: true
      description: The unique ID of the resource.
      schema:
        type: string
    Page:
      name: page
      in: query
      required: false
      description: Page number for paginated results (25 records per page).
      schema:
        type: integer
        default: 1
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Authentication. Use your private API key as the username; the password can be any value. API keys are managed in the Quaderno account settings.