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OpenAPI Specification

openapi: 3.2.0
info:
  title: Facebook Marketing Audiences API
  description: Programmatically manage Facebook ad campaigns, ad sets, ad creatives, Custom Audiences, and advertising reports.
  version: '21.0'
  contact:
    name: Meta Platforms
    url: https://developers.facebook.com
  x-generated-from: documentation
  x-last-validated: '2026-04-18'
servers:
- url: https://graph.facebook.com/v21.0
  description: Facebook Marketing API v21.0
security:
- BearerAuth: []
tags:
- name: Audiences
paths:
  /act_{ad-account-id}/customaudiences:
    get:
      operationId: listCustomAudiences
      summary: Facebook List Custom Audiences
      description: Retrieve custom audiences for an ad account.
      tags:
      - Audiences
      parameters:
      - name: ad-account-id
        in: path
        required: true
        description: The ad account ID.
        schema:
          type: string
        example: '123456789'
      responses:
        '200':
          description: Custom audiences retrieved successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomAudienceList'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
    post:
      operationId: createCustomAudience
      summary: Facebook Create Custom Audience
      description: Create a new custom audience.
      tags:
      - Audiences
      parameters:
      - name: ad-account-id
        in: path
        required: true
        description: The ad account ID.
        schema:
          type: string
        example: '123456789'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomAudienceRequest'
      responses:
        '200':
          description: Custom audience created successfully.
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    CustomAudienceRequest:
      type: object
      description: Request to create a custom audience.
      properties:
        name:
          type: string
          description: Audience name.
        description:
          type: string
          description: Audience description.
        subtype:
          type: string
          description: Audience subtype.
        customer_file_source:
          type: string
          description: Source of customer data.
      required:
      - name
      - subtype
    Paging:
      type: object
      description: Pagination cursors.
      properties:
        cursors:
          type: object
          properties:
            before:
              type: string
            after:
              type: string
        next:
          type: string
          format: uri
        previous:
          type: string
          format: uri
    CustomAudience:
      type: object
      description: A custom audience for ad targeting.
      properties:
        id:
          type: string
          description: Custom audience ID.
          example: '700001234567890'
        name:
          type: string
          description: Audience name.
          example: Website Visitors Last 30 Days
        description:
          type: string
          description: Audience description.
        approximate_count:
          type: integer
          description: Approximate audience size.
          example: 25000
        subtype:
          type: string
          description: Audience subtype.
          enum:
          - CUSTOM
          - LOOKALIKE
          - WEBSITE
        delivery_status:
          type: object
          description: Audience delivery status.
    CustomAudienceList:
      type: object
      description: Paginated list of custom audiences.
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/CustomAudience'
        paging:
          $ref: '#/components/schemas/Paging'
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: OAuth 2.0 access token with ads_management permission.