openapi: 3.1.0
info:
  title: Facebook Business Manager Facebook Marketing Ad Accounts Page Insights API
  description: Create and manage ad campaigns, analyze performance, and automate advertising workflows across Meta platforms. The Marketing API provides programmatic access to Facebook's advertising system, enabling businesses to create campaigns, ad sets, and ads, manage budgets and bidding strategies, define targeting audiences, and retrieve performance metrics.
  version: '25.0'
  contact:
    name: Meta Developer Support
    url: https://developers.facebook.com/support
  termsOfService: https://developers.facebook.com/terms
servers:
- url: https://graph.facebook.com/v25.0
  description: Facebook Graph API Production Server
security:
- bearerAuth: []
tags:
- name: Page Insights
  description: Retrieve analytics and engagement metrics for a Facebook Page.
paths:
  /{page_id}/insights:
    get:
      operationId: getPageInsights
      summary: Facebook Business Manager Get page insights
      description: Retrieves analytics metrics for the Facebook Page including reach, impressions, engagement, and audience demographics.
      tags:
      - Page Insights
      parameters:
      - $ref: '#/components/parameters/pageId'
      - name: metric
        in: query
        description: Comma-separated list of metrics to retrieve such as page_impressions, page_engaged_users, page_fans.
        required: true
        schema:
          type: string
      - name: period
        in: query
        description: Aggregation period for the metrics
        required: false
        schema:
          type: string
          enum:
          - day
          - week
          - days_28
          - month
          - lifetime
          - total_over_range
      - name: since
        in: query
        description: Start of the date range in Unix timestamp or YYYY-MM-DD format
        required: false
        schema:
          type: string
      - name: until
        in: query
        description: End of the date range in Unix timestamp or YYYY-MM-DD format
        required: false
        schema:
          type: string
      responses:
        '200':
          description: Successfully retrieved page insights
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PageInsightsResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  parameters:
    pageId:
      name: page_id
      in: path
      required: true
      description: The ID of the Facebook Page
      schema:
        type: string
  responses:
    BadRequest:
      description: Invalid request parameters or malformed request body
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Invalid or expired access token or insufficient permissions
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            message:
              type: string
              description: Human-readable error message
            type:
              type: string
              description: Error type classification
            code:
              type: integer
              description: Numeric error code
            error_subcode:
              type: integer
              description: Numeric error subcode
            fbtrace_id:
              type: string
              description: Unique trace ID for debugging
    Paging:
      type: object
      properties:
        cursors:
          type: object
          properties:
            before:
              type: string
            after:
              type: string
        next:
          type: string
        previous:
          type: string
    PageInsightsResponse:
      type: object
      properties:
        data:
          type: array
          items:
            type: object
            properties:
              name:
                type: string
                description: The metric name
              period:
                type: string
                description: The aggregation period
              values:
                type: array
                items:
                  type: object
                  properties:
                    value:
                      description: The metric value (integer or object)
                    end_time:
                      type: string
                      format: date-time
              title:
                type: string
                description: Human-readable metric title
              description:
                type: string
                description: Description of what the metric measures
              id:
                type: string
                description: Metric identifier
        paging:
          $ref: '#/components/schemas/Paging'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: OAuth 2.0 access token with ads_management or ads_read permissions. Obtain tokens via the Facebook Login flow.
externalDocs:
  description: Facebook Marketing API Documentation
  url: https://developers.facebook.com/docs/marketing-api