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

# List modular inventory products

> List product-like projections from normalized avails on a modular inventory source.



## OpenAPI

````yaml /v2/storefront-api-v2.yaml get /inventory-sources/{sourceId}/modular/products
openapi: 3.0.0
info:
  title: Scope3 Storefront API
  version: 2.0.0
  description: >-
    REST API for partners to manage Seller Accounts, inventory sources, and
    billing.


    ## Authentication


    All endpoints require a Bearer token in the Authorization header:

    ```

    Authorization: Bearer your-api-key

    ```


    ## Base URL


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


    ## For AI Agents


    AI agents can use the MCP endpoint at `/mcp/v2/storefront` 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/storefront
    description: Production server
security: []
tags:
  - 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: Storefront
    description: Manage storefront and inventory sources
  - name: Storefront Agents
    description: List and manage registered sales, signals, and outcomes agents
  - name: Storefront Activity
    description: Audit log of configuration and inventory changes on the storefront
  - name: Storefront Billing
    description: Payout bank details and billing configuration for Seller Accounts
  - name: AI Usage
    description: Seller Account AI token usage visibility by model
  - name: MCP
    description: Model Context Protocol endpoints
paths:
  /inventory-sources/{sourceId}/modular/products:
    get:
      tags:
        - Storefront
      summary: List modular inventory products
      description: >-
        List product-like projections from normalized avails on a modular
        inventory source.
      operationId: listModularInventorySourceProducts
      parameters:
        - in: path
          name: sourceId
          schema:
            type: string
            minLength: 1
            description: Inventory source ID
          required: true
          description: Inventory source ID
      responses:
        '200':
          description: List modular inventory products
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ModularInventoryProductsResponse'
        '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:
    ModularInventoryProductsResponse:
      type: object
      properties:
        products:
          type: array
          items:
            $ref: '#/components/schemas/ModularInventoryProduct'
      required:
        - products
      additionalProperties: false
    ErrorResponse:
      type: object
      properties:
        data:
          type: string
          nullable: true
          enum:
            - null
        error:
          $ref: '#/components/schemas/ApiError'
      required:
        - data
        - error
      additionalProperties: false
      description: Standard error response
    ModularInventoryProduct:
      type: object
      properties:
        productId:
          type: string
        availId:
          type: string
        collectionId:
          type: string
          description: >-
            Legacy static-avails v1 compatibility grouping identifier. It does
            not establish AdCP Collection identity.
        collectionName:
          type: string
          description: >-
            Legacy static-avails v1 compatibility grouping label. It does not
            establish AdCP Collection identity.
        name:
          type: string
        description:
          type: string
        channel:
          nullable: true
          type: string
        formatOptions:
          minItems: 1
          type: array
          items:
            $ref: '#/components/schemas/EsaCanonicalProductFormatOption'
        publisherProperties:
          minItems: 1
          type: array
          items:
            anyOf:
              - type: object
                properties:
                  publisher_domain:
                    type: string
                    pattern: >-
                      ^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$
                  publisher_domains:
                    type: array
                    items:
                      type: string
                  selection_type:
                    type: string
                    enum:
                      - all
                required:
                  - selection_type
                additionalProperties: {}
              - type: object
                properties:
                  publisher_domain:
                    type: string
                    pattern: >-
                      ^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$
                  selection_type:
                    type: string
                    enum:
                      - by_id
                  property_ids:
                    type: array
                    items:
                      type: string
                      pattern: ^[a-z0-9_]+$
                required:
                  - publisher_domain
                  - selection_type
                  - property_ids
                additionalProperties: {}
              - type: object
                properties:
                  publisher_domain:
                    type: string
                    pattern: >-
                      ^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$
                  publisher_domains:
                    type: array
                    items:
                      type: string
                  selection_type:
                    type: string
                    enum:
                      - by_tag
                  property_tags:
                    type: array
                    items:
                      type: string
                      pattern: ^[a-z0-9_]+$
                required:
                  - selection_type
                  - property_tags
                additionalProperties: {}
        startTime:
          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))$
        endTime:
          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))$
        impressionsCapacity:
          type: integer
          minimum: 0
          maximum: 9007199254740991
        heldImpressions:
          type: integer
          minimum: 0
          maximum: 9007199254740991
        bookedImpressions:
          type: integer
          minimum: 0
          maximum: 9007199254740991
        availableImpressions:
          type: integer
          minimum: 0
          maximum: 9007199254740991
        cpm:
          nullable: true
          type: number
        currency:
          nullable: true
          type: string
        targeting:
          type: object
          additionalProperties: {}
        sourceMetadata:
          type: object
          additionalProperties: {}
        cadent:
          nullable: true
          description: >-
            Cadent-specific execution projection. Null unless this modular
            source has an active Cadent execution module.
          type: object
          properties:
            campaignDeliveryType:
              type: string
            lineDeliveryType:
              type: string
            adType:
              type: string
            adClass:
              type: string
            targets:
              type: array
              items:
                type: object
                properties:
                  condition:
                    type: string
                    enum:
                      - include
                      - exclude
                      - strictexclude
                  targetType:
                    type: string
                  values:
                    type: array
                    items:
                      type: string
                required:
                  - condition
                  - targetType
                  - values
                additionalProperties: false
          required:
            - campaignDeliveryType
            - lineDeliveryType
            - adType
            - adClass
            - targets
          additionalProperties: false
      required:
        - productId
        - availId
        - collectionId
        - collectionName
        - name
        - description
        - channel
        - formatOptions
        - publisherProperties
        - startTime
        - endTime
        - impressionsCapacity
        - heldImpressions
        - bookedImpressions
        - availableImpressions
        - cpm
        - currency
        - targeting
        - sourceMetadata
        - cadent
      additionalProperties: false
      description: Product-like projection of one normalized modular inventory avail.
    ApiError:
      type: object
      properties:
        code:
          type: string
          description: Machine-readable error code
        message:
          type: string
          description: Human-readable error message
        field:
          description: Field path associated with the error
          type: string
        details:
          description: Additional error context
          type: object
          additionalProperties: {}
      required:
        - code
        - message
      additionalProperties: false
      description: Structured error object
    EsaCanonicalProductFormatOption:
      type: object
      properties:
        format_option_id:
          type: string
        publisher_domain:
          description: >-
            Publisher catalog namespace for format_option_id. Omit for
            product-local format options.
          type: string
          maxLength: 253
          pattern: ^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$
        format_kind:
          anyOf:
            - type: string
              enum:
                - image
            - type: string
              enum:
                - html5
            - type: string
              enum:
                - display_tag
            - type: string
              enum:
                - image_carousel
            - type: string
              enum:
                - video_hosted
            - type: string
              enum:
                - video_vast
            - type: string
              enum:
                - audio_hosted
            - type: string
              enum:
                - audio_vast
            - type: string
              enum:
                - audio_daast
            - type: string
              enum:
                - sponsored_placement
            - type: string
              enum:
                - native_in_feed
            - type: string
              enum:
                - responsive_creative
            - type: string
              enum:
                - agent_placement
            - type: string
              enum:
                - seller_rendered_stateful_display
            - type: string
              enum:
                - coordinated_placements
            - type: string
              enum:
                - custom
        params:
          type: object
          additionalProperties: {}
      required:
        - format_kind
        - params
      additionalProperties: false
      description: >-
        URL-free AdCP 3.1 product format declaration. Canonical formats use
        format_kind plus params and never agent_url; publisher-backed options
        pair format_option_id with publisher_domain.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key or access token

````