openapi: 3.0.3
info:
  title: bunq Public Attachment Customer Statement API
  description: 'Grounded, representative subset of the bunq Public API. bunq is a European (Dutch) neobank; its REST API lets account holders and licensed third parties read accounts, initiate SEPA and other payments, send and respond to payment requests, manage cards, export statements, upload attachments, and subscribe to event callbacks.


    IMPORTANT - bunq uses an unusual multi-step handshake before any business call can be made. All request/response bodies in the bunq API are wrapped in a top-level `Response` (list) envelope, and most responses also return a server signature. This document models the handshake plus a representative slice of the resource surface; it is NOT the full bunq API, which exposes hundreds of endpoints. Path segments such as `{userID}` and `{monetaryAccountID}` are numeric IDs returned by earlier calls. This spec is authored by API Evangelist from the public documentation at https://doc.bunq.com and is not an official bunq artifact; request/response schemas are simplified and several are modeled rather than copied verbatim.'
  version: v1
  contact:
    name: bunq API documentation
    url: https://doc.bunq.com
  license:
    name: bunq API Terms of Service
    url: https://doc.bunq.com
servers:
- url: https://api.bunq.com/v1
  description: Production
- url: https://public-api.sandbox.bunq.com/v1
  description: Sandbox
security:
- sessionToken: []
tags:
- name: Customer Statement
  description: Generate and download account statement exports (CSV, MT940, PDF).
paths:
  /user/{userID}/monetary-account/{monetaryAccountID}/customer-statement:
    parameters:
    - $ref: '#/components/parameters/UserID'
    - $ref: '#/components/parameters/MonetaryAccountID'
    get:
      operationId: listCustomerStatements
      tags:
      - Customer Statement
      summary: List customer statements
      description: Lists the statement exports generated for the monetary account.
      responses:
        '200':
          description: A list of customer statements.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Response'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createCustomerStatement
      tags:
      - Customer Statement
      summary: Create a customer statement export
      description: Generates a statement export for a date range in CSV, MT940, or PDF format. `include_attachment` embeds attached mutations (for PDF).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomerStatementInput'
      responses:
        '200':
          description: The created customer statement (id returned).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Response'
        '400':
          $ref: '#/components/responses/Error'
  /user/{userID}/monetary-account/{monetaryAccountID}/customer-statement/{customerStatementID}/content:
    parameters:
    - $ref: '#/components/parameters/UserID'
    - $ref: '#/components/parameters/MonetaryAccountID'
    - name: customerStatementID
      in: path
      required: true
      description: The ID of the customer statement.
      schema:
        type: integer
    get:
      operationId: getCustomerStatementContent
      tags:
      - Customer Statement
      summary: Download customer statement content
      description: Downloads the generated statement file (CSV, MT940, or PDF) as raw bytes.
      responses:
        '200':
          description: The statement file content.
          content:
            application/octet-stream:
              schema:
                type: string
                format: binary
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    Response:
      type: object
      description: Generic bunq response envelope. Every bunq response wraps its payload in a top-level `Response` array whose items are single-key objects keyed by the resource type (for example `Payment`, `MonetaryAccount`, `Id`, `Token`). Modeled generically here; see doc.bunq.com for the exact per-resource shape.
      properties:
        Response:
          type: array
          items:
            type: object
            additionalProperties: true
    CustomerStatementInput:
      type: object
      required:
      - statement_format
      - date_start
      - date_end
      properties:
        statement_format:
          type: string
          enum:
          - CSV
          - MT940
          - PDF
        date_start:
          type: string
          format: date
        date_end:
          type: string
          format: date
        regional_format:
          type: string
          enum:
          - EUROPEAN
          - UK_US
        include_attachment:
          type: boolean
          description: Whether to include attached mutations (PDF only).
    ErrorResponse:
      type: object
      description: bunq error envelope.
      properties:
        Error:
          type: array
          items:
            type: object
            properties:
              error_description:
                type: string
              error_description_translated:
                type: string
  responses:
    Unauthorized:
      description: Missing/invalid session token or signature.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Error:
      description: A bunq error response envelope.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  parameters:
    MonetaryAccountID:
      name: monetaryAccountID
      in: path
      required: true
      description: The numeric ID of the monetary account.
      schema:
        type: integer
    UserID:
      name: userID
      in: path
      required: true
      description: The numeric ID of the user.
      schema:
        type: integer
  securitySchemes:
    sessionToken:
      type: apiKey
      in: header
      name: X-Bunq-Client-Authentication
      description: Session token obtained from POST /session-server, sent on every business call. In addition, each request body must be signed with your private key and the signature sent in the X-Bunq-Client-Signature header (see the ClientSignature parameter). bunq is not a simple bearer-token API.
    installationToken:
      type: apiKey
      in: header
      name: X-Bunq-Client-Authentication
      description: Installation token from POST /installation, used only for the device-server and session-server handshake calls.