Affirm Transaction Events API

openapi: 3.2.0
info:
  title: Affirm Transactions Transaction Events API
  description: The Affirm Transactions API provides server-side endpoints for managing the full lifecycle of Affirm payment transactions after a customer completes checkout.
  version: '1.0'
  contact:
    name: Affirm Developer Support
    url: https://docs.affirm.com/developers/docs/development-quickstart
  termsOfService: https://www.affirm.com/legal/merchant-terms
servers:
- url: https://api.affirm.com/api/v1
  description: Production Server
- url: https://sandbox.affirm.com/api/v1
  description: Sandbox Server
security:
- basicAuth: []
tags:
- name: Transaction Events
  description: Operations for listing transaction event records associated with transaction lifecycle changes.
paths:
  /transaction_events:
    get:
      operationId: listTransactionEvents
      summary: Affirm List Transaction Events
      description: Returns a paginated list of transaction event records for the authenticated merchant. Each event documents a change in a transaction's lifecycle, such as an authorization, capture, refund, or void. Events include timestamps, amounts, fees, and reference identifiers for reconciliation.
      tags:
      - Transaction Events
      parameters:
      - $ref: '#/components/parameters/PageLimit'
      - $ref: '#/components/parameters/PageCursor'
      responses:
        '200':
          description: A list of transaction event objects.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/TransactionEvent'
                  next_cursor:
                    type: string
                    description: Cursor for the next page of results.
              examples:
                listTransactionEvents200Example:
                  summary: Default listTransactionEvents 200 response
                  x-microcks-default: true
                  value:
                    data:
                    - id: {}
                      type: {}
                      amount: {}
                      currency: {}
                      fee: {}
                      created: {}
                      reference_id: {}
                      metadata: {}
                    next_cursor: example_value
        '401':
          $ref: '#/components/responses/Unauthorized'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  parameters:
    PageCursor:
      name: cursor
      in: query
      required: false
      description: Pagination cursor returned from a previous list response.
      schema:
        type: string
    PageLimit:
      name: limit
      in: query
      required: false
      description: Maximum number of records to return per page.
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 20
  responses:
    Unauthorized:
      description: Unauthorized. Authentication credentials are missing or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Error:
      type: object
      description: Standard error response returned by the Affirm API.
      properties:
        status_code:
          type: integer
          description: HTTP status code of the error.
          example: 1
        code:
          type: string
          description: Machine-readable error code string.
          example: example_value
        message:
          type: string
          description: Human-readable description of the error.
          example: example_value
        field:
          type: string
          description: The specific field that caused the error, if applicable.
          example: example_value
    TransactionEvent:
      type: object
      description: Represents a single event in the lifecycle of a transaction, such as an authorization, capture, refund, or void.
      properties:
        id:
          type: string
          description: A unique identifier for the transaction event.
          example: '500123'
        type:
          type: string
          description: The type of transaction event.
          enum:
          - auth
          - capture
          - refund
          - void
          - update
          example: auth
        amount:
          type: integer
          description: The amount associated with this event in the smallest currency unit.
          example: 1
        currency:
          type: string
          description: The ISO 4217 currency code for this event.
          example: USD
        fee:
          type: integer
          description: The fee charged by Affirm for this event in the smallest currency unit.
          example: 1
        created:
          type: string
          format: date-time
          description: The time when this event was created, in RFC 3339 format.
          example: '2025-03-15T14:30:00Z'
        reference_id:
          type: string
          description: An external reference identifier associated with this event.
          example: '500123'
        metadata:
          type: object
          description: Additional key-value metadata associated with this event for merchant tracking purposes.
          additionalProperties:
            type: string
          example: {}
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic Authentication using the merchant's public API key as the username and private API key as the password, Base64-encoded as per RFC 7617.
externalDocs:
  description: Affirm Transactions API Reference
  url: https://docs.affirm.com/developers/reference/transaction-api-endpoints