Fundraise Up Supporters API

openapi: 3.2.0
info:
  title: Fundraise Up REST Donations Supporters API
  description: The Fundraise Up REST API gives programmatic access to fundraising data for a nonprofit's Fundraise Up account. It is resource-oriented, uses predictable URLs, accepts JSON-encoded request bodies with a Content-Type of application/json, and returns JSON responses. The API lets you work with Donations, Recurring Plans, Supporters (donors), and Events (an audit log), and generate Donor Portal access links. Donations and recurring plans can be created and updated, but updates are only allowed within 24 hours of creation; supporters and events are read-only. List endpoints use cursor-based pagination via the limit, starting_after, and ending_before query parameters. All requests authenticate with an API key (created in the dashboard under Settings > API keys) passed as an HTTP Bearer token. Fundraise Up does not expose a WebSocket API; event-based syncing is done by polling the Events resource. Field-level request and response schemas are intentionally left open here and should be reconciled against the hosted reference at https://api.fundraiseup.com/v1/docs/.
  version: '1.0'
  contact:
    name: Fundraise Up
    url: https://fundraiseup.com
  license:
    name: Proprietary
    url: https://fundraiseup.com/terms/
servers:
- url: https://api.fundraiseup.com/v1
  description: Fundraise Up REST API
security:
- bearerAuth: []
tags:
- name: Supporters
  description: Donor records (Fundraise Up calls donors "supporters").
paths:
  /supporters:
    get:
      operationId: listSupporters
      tags:
      - Supporters
      summary: List supporters
      description: Retrieves supporters (donor records) with cursor-based pagination.
      parameters:
      - $ref: '#/components/parameters/Limit'
      - $ref: '#/components/parameters/StartingAfter'
      - $ref: '#/components/parameters/EndingBefore'
      responses:
        '200':
          description: A paginated list of supporters.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SupporterList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/TooManyRequests'
  /supporters/{id}:
    parameters:
    - $ref: '#/components/parameters/Id'
    get:
      operationId: getSupporter
      tags:
      - Supporters
      summary: Retrieve a supporter
      description: Retrieves the details of a specific supporter by ID.
      responses:
        '200':
          description: The requested supporter.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Supporter'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    NotFound:
      description: The requested resource does not exist.
    TooManyRequests:
      description: Rate limit exceeded (8 requests/second or 128 requests/minute).
    Unauthorized:
      description: The API key is missing or invalid.
  parameters:
    Limit:
      name: limit
      in: query
      required: false
      description: Number of records to return, from 1 to 100.
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 10
    StartingAfter:
      name: starting_after
      in: query
      required: false
      description: A cursor (object ID) to fetch the page of records after it.
      schema:
        type: string
    EndingBefore:
      name: ending_before
      in: query
      required: false
      description: A cursor (object ID) to fetch the page of records before it.
      schema:
        type: string
    Id:
      name: id
      in: path
      required: true
      description: The unique identifier of the resource.
      schema:
        type: string
  schemas:
    Pagination:
      type: object
      properties:
        has_more:
          type: boolean
          description: Whether more records are available beyond this page.
    Supporter:
      type: object
      description: A supporter (donor) record. Field schema to be reconciled against the hosted reference.
      properties:
        id:
          type: string
        object:
          type: string
          example: supporter
      additionalProperties: true
    SupporterList:
      allOf:
      - $ref: '#/components/schemas/Pagination'
      - type: object
        properties:
          data:
            type: array
            items:
              $ref: '#/components/schemas/Supporter'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key created in the dashboard under Settings > API keys, sent as a Bearer token.