openapi: 3.1.0
info:
  title: Meta Graph API - User Custom Audiences API
  description: Subset of the Meta (Facebook) Graph API focusing on User node operations including reading user profile fields, posting updates, and managing custom audiences. Requires user access tokens with appropriate permissions such as public_profile.
  version: v22.0
servers:
- url: https://graph.facebook.com/v22.0
  description: Meta Graph API
security:
- userAccessToken: []
tags:
- name: Custom Audiences
  description: Manage user membership in custom audiences
paths:
  /{custom-audience-id}/users:
    parameters:
    - name: custom-audience-id
      in: path
      required: true
      description: ID of the custom audience.
      schema:
        type: string
    post:
      operationId: addUsersToCustomAudience
      summary: Meta Add users to custom audience
      description: Adds users to a custom audience using payload schemas such as EMAIL_SHA256 or PHONE_SHA256.
      tags:
      - Custom Audiences
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                payload:
                  type: object
      responses:
        '200':
          description: Users added
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SuccessResponse'
    delete:
      operationId: removeUsersFromCustomAudience
      summary: Meta Remove users from custom audience
      description: Removes users from a custom audience using payload data.
      tags:
      - Custom Audiences
      responses:
        '200':
          description: Users removed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SuccessResponse'
components:
  schemas:
    SuccessResponse:
      type: object
      properties:
        success:
          type: boolean
  securitySchemes:
    userAccessToken:
      type: oauth2
      flows:
        implicit:
          authorizationUrl: https://www.facebook.com/v22.0/dialog/oauth
          scopes:
            public_profile: Access basic profile info
externalDocs:
  description: Meta Graph API User Reference
  url: https://developers.facebook.com/docs/graph-api/reference/user/
x-generated-from: https://developers.facebook.com/docs/graph-api/reference/user/
x-generated-by: claude-crawl-2026-05-08