> ## 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.

# Search modular inventory selectors

> Search upstream taxonomy selectors for a modular inventory source. For FreeWheel sandbox sources this reads live selector taxonomy, not avails or forecasted capacity.



## OpenAPI

````yaml /v2/storefront-api-v2.yaml get /inventory-sources/{sourceId}/modular/inventory/selectors
openapi: 3.0.0
info:
  title: Scope3 Storefront API
  version: 2.0.0
  description: |-
    REST API for partners to manage storefronts, 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: 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 storefronts
  - name: AI Usage
    description: Storefront AI token usage visibility by model
  - name: MCP
    description: Model Context Protocol endpoints
paths:
  /inventory-sources/{sourceId}/modular/inventory/selectors:
    get:
      tags:
        - Storefront
      summary: Search modular inventory selectors
      description: >-
        Search upstream taxonomy selectors for a modular inventory source. For
        FreeWheel sandbox sources this reads live selector taxonomy, not avails
        or forecasted capacity.
      operationId: searchModularInventorySelectors
      parameters:
        - in: query
          name: selectorType
          schema:
            type: string
            enum:
              - site
              - site_section
              - site_group
              - series
              - video_group
              - ad_unit_package
              - ad_unit_node
              - standard_attribute
          required: true
        - in: query
          name: q
          schema:
            type: string
        - in: query
          name: query
          schema:
            type: string
        - in: query
          name: parentId
          schema:
            type: string
        - in: query
          name: cursor
          schema:
            type: string
        - in: query
          name: limit
          schema:
            type: integer
            minimum: 1
            maximum: 100
        - in: path
          name: sourceId
          schema:
            description: Inventory source ID
            type: string
            minLength: 1
          required: true
          description: Inventory source ID
      responses:
        '200':
          description: Search modular inventory selectors
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FreeWheelInventorySelectorPageResponse'
        '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:
    FreeWheelInventorySelectorPageResponse:
      type: object
      properties:
        items:
          type: array
          items:
            type: object
            properties:
              selectorType:
                type: string
                enum:
                  - site
                  - site_section
                  - site_group
                  - series
                  - video_group
                  - ad_unit_package
                  - ad_unit_node
                  - standard_attribute
              externalId:
                type: string
              name:
                type: string
              path:
                type: array
                items:
                  type: string
              parentId:
                nullable: true
                type: string
              status:
                nullable: true
                type: string
              hasChildren:
                type: boolean
              metadata:
                type: object
                additionalProperties: {}
            required:
              - selectorType
              - externalId
              - name
            additionalProperties: false
        nextCursor:
          nullable: true
          type: string
        count:
          type: integer
          minimum: 0
          maximum: 9007199254740991
      required:
        - items
        - nextCursor
        - count
      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
    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
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key or access token

````