> ## Documentation Index
> Fetch the complete documentation index at: https://docs.interchange.io/llms.txt
> Use this file to discover all available pages before exploring further.

# List event sources

> List event sources for an advertiser. Event sources represent conversion data pipelines referenced by optimization goals.



## OpenAPI

````yaml /v2/buyer-api-v2.yaml get /advertisers/{advertiserId}/event-sources
openapi: 3.0.0
info:
  title: Scope3 Buyer API
  version: 2.0.0
  description: |-
    REST API for advertisers to manage advertisers, campaigns, and reporting.

    ## Authentication

    All endpoints require a Bearer token in the Authorization header:
    ```
    Authorization: Bearer your-api-key
    ```

    ## Base URL

    `https://api.interchange.io/api/v2/buyer`

    ## For AI Agents

    AI agents can use the MCP endpoint at `/mcp/v2/buyer` with three tools:
    - `initialize`: Start an MCP session
    - `api_call`: Make REST API calls
    - `ask_about_capability`: Learn about API features
servers:
  - url: https://api.interchange.io/api/v2/buyer
    description: Production server
security: []
tags:
  - name: Signup
    description: Request reviewed access to Interchange
  - name: Account
    description: Account management, service tokens, and preferences
  - name: Asks
    description: >-
      What you are waiting on Scope3 for — support, product, and supply asks in
      one list
  - name: Advertisers
    description: Manage advertisers
  - name: Product Discovery
    description: Discover and select products
  - name: Campaigns
    description: Manage advertising campaigns
  - name: Creatives
    description: Build, manage, and sync campaign creatives via AdCP Creative Protocol
  - name: Reporting
    description: Access performance metrics
  - name: Event Sources
    description: >-
      Manage event source configurations and log conversion/marketing events for
      attribution
  - name: Property Lists
    description: Validate property lists against AAO registry
  - name: Sales Agents
    description: View and connect sales agents
  - name: Measurement
    description: Measurement sources, records, context, and freshness
  - name: Syndication
    description: Syndicate resources to ADCP agents
  - name: Tasks
    description: Track async operation status
  - name: Buyer Billing
    description: >-
      Consolidated invoicing for buyers — invoices and pending invoice items
      issued by Scope3 across the buyer customer.
  - name: MCP
    description: Model Context Protocol endpoints for AI agents
paths:
  /advertisers/{advertiserId}/event-sources:
    get:
      tags:
        - Event Sources
      summary: List event sources
      description: >-
        List event sources for an advertiser. Event sources represent conversion
        data pipelines referenced by optimization goals.
      operationId: listEventSources
      parameters:
        - in: query
          name: take
          schema:
            description: Number of results to return (max 250)
            example: 50
            default: 50
            type: integer
            maximum: 250
            minimum: 1
          description: Number of results to return (max 250)
        - in: query
          name: skip
          schema:
            description: Number of results to skip for pagination
            example: 0
            default: 0
            type: integer
            minimum: 0
            maximum: 9007199254740991
          description: Number of results to skip for pagination
        - in: path
          name: advertiserId
          schema:
            description: Unique identifier for the advertiser
            example: '12345'
            type: string
            minLength: 1
          required: true
          description: Unique identifier for the advertiser
      responses:
        '200':
          description: List event sources
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EventSourceListResponse'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      security:
        - bearerAuth: []
components:
  schemas:
    EventSourceListResponse:
      description: Response containing a paginated list of event sources
      type: object
      properties:
        eventSources:
          description: List of event sources
          type: array
          items:
            $ref: '#/components/schemas/EventSourceOutput'
        total:
          description: Total count of event sources matching the query
          example: 5
          type: integer
          minimum: 0
          maximum: 9007199254740991
      required:
        - eventSources
        - total
      additionalProperties: false
    ErrorResponse:
      description: Standard error response
      type: object
      properties:
        data:
          type: string
          nullable: true
          enum:
            - null
        error:
          $ref: '#/components/schemas/ApiError'
      required:
        - data
        - error
      additionalProperties: false
    EventSourceOutput:
      description: Event source resource representation
      type: object
      properties:
        eventSourceId:
          description: Identifier for this event source
          example: retailer_sales
          type: string
        name:
          description: Human-readable name
          example: Retailer Sales Pixel
          type: string
        eventTypes:
          description: Event types this source handles (null = all types accepted)
          nullable: true
          type: array
          items:
            description: IAB ECAPI event type to optimize for
            type: string
            enum:
              - page_view
              - view_content
              - select_content
              - select_item
              - search
              - share
              - add_to_cart
              - remove_from_cart
              - viewed_cart
              - add_to_wishlist
              - initiate_checkout
              - add_payment_info
              - purchase
              - refund
              - lead
              - qualify_lead
              - close_convert_lead
              - disqualify_lead
              - complete_registration
              - subscribe
              - follow
              - content_view
              - watch_milestone
              - start_trial
              - app_install
              - app_launch
              - contact
              - schedule
              - donate
              - submit_application
              - custom
        allowedDomains:
          description: Domains authorized to send events
          nullable: true
          type: array
          items:
            type: string
        integrationPlatform:
          description: >-
            Scope3 extension: source system or integration platform (for example
            Hightouch)
          nullable: true
          type: string
        mapping:
          description: 'Scope3 extension: persisted source-to-log_event mapping'
          nullable: true
          allOf:
            - $ref: '#/components/schemas/EventSourceMappingOutput'
        testEventCode:
          description: Optional code used to mark test events for this source
          nullable: true
          type: string
        health:
          description: Observed ingestion health for this source
          allOf:
            - $ref: '#/components/schemas/EventSourceHealth'
        createdAt:
          description: When the event source was created (ISO 8601)
          example: '2026-01-15T10:30:00.000Z'
          type: string
          format: date-time
          pattern: >-
            ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
        updatedAt:
          description: When the event source was last updated (ISO 8601)
          example: '2026-01-20T14:45:00.000Z'
          type: string
          format: date-time
          pattern: >-
            ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
      required:
        - eventSourceId
        - name
        - eventTypes
        - allowedDomains
        - integrationPlatform
        - mapping
        - testEventCode
        - health
        - createdAt
        - updatedAt
      additionalProperties: false
    ApiError:
      description: Structured error object
      type: object
      properties:
        code:
          description: Machine-readable error code
          type: string
        message:
          description: Human-readable error message
          type: string
        field:
          description: Field path associated with the error
          type: string
        details:
          description: Additional error context
          type: object
          additionalProperties: {}
      required:
        - code
        - message
      additionalProperties: false
    EventSourceMappingOutput:
      description: Persisted field mapping contract for this event source
      type: object
      properties:
        eventIdField:
          nullable: true
          type: string
        eventTypeField:
          nullable: true
          type: string
        eventTimeField:
          nullable: true
          type: string
        userMatchFields:
          nullable: true
          type: array
          items:
            type: string
        valueField:
          nullable: true
          type: string
        currencyField:
          nullable: true
          type: string
        orderIdField:
          nullable: true
          type: string
        contentIdsField:
          nullable: true
          type: string
        consentField:
          nullable: true
          type: string
        dedupeStrategy:
          nullable: true
          type: string
        notes:
          nullable: true
          type: string
      required:
        - eventIdField
        - eventTypeField
        - eventTimeField
        - userMatchFields
        - valueField
        - currencyField
        - orderIdField
        - contentIdsField
        - consentField
        - dedupeStrategy
        - notes
      additionalProperties: false
    EventSourceHealth:
      description: Basic ingestion health for an event source
      type: object
      properties:
        status:
          description: Current observed ingestion status for this source
          type: string
          enum:
            - not_seen
            - receiving
            - needs_attention
        lastEventAt:
          description: Most recent event_time observed from this source
          nullable: true
          type: string
          format: date-time
          pattern: >-
            ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
        lastEventReceivedAt:
          description: When Scope3 last accepted an event from this source
          nullable: true
          type: string
          format: date-time
          pattern: >-
            ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
        lastEventType:
          description: Most recent accepted event type from this source
          nullable: true
          type: string
          enum:
            - page_view
            - view_content
            - select_content
            - select_item
            - search
            - share
            - add_to_cart
            - remove_from_cart
            - viewed_cart
            - add_to_wishlist
            - initiate_checkout
            - add_payment_info
            - purchase
            - refund
            - lead
            - qualify_lead
            - close_convert_lead
            - disqualify_lead
            - complete_registration
            - subscribe
            - follow
            - content_view
            - watch_milestone
            - start_trial
            - app_install
            - app_launch
            - contact
            - schedule
            - donate
            - submit_application
            - custom
        lastError:
          description: Most recent ingestion error observed for this source
          nullable: true
          type: string
        lastErrorAt:
          description: When the most recent ingestion error was recorded
          nullable: true
          type: string
          format: date-time
          pattern: >-
            ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
      required:
        - status
        - lastEventAt
        - lastEventReceivedAt
        - lastEventType
        - lastError
        - lastErrorAt
      additionalProperties: false
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key or access token

````