> ## 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.

# Get storefront AI usage by model over time

> Get customer-borne storefront AI token usage grouped by day and model. Customer scope is always derived from the authenticated organization.



## OpenAPI

````yaml /v2/storefront-api-v2.yaml get /usage/by-model
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:
  /usage/by-model:
    get:
      tags:
        - AI Usage
      summary: Get storefront AI usage by model over time
      description: >-
        Get customer-borne storefront AI token usage grouped by day and model.
        Customer scope is always derived from the authenticated organization.
      operationId: getStorefrontAiUsageByModel
      parameters:
        - in: query
          name: since
          schema:
            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))$
      responses:
        '200':
          description: Get storefront AI usage by model over time
          content:
            application/json:
              schema:
                type: object
                properties:
                  rows:
                    type: array
                    items:
                      type: object
                      properties:
                        model:
                          type: string
                        inputTokens:
                          type: integer
                          minimum: 0
                          maximum: 9007199254740991
                        outputTokens:
                          type: integer
                          minimum: 0
                          maximum: 9007199254740991
                        cacheCreationInputTokens:
                          type: integer
                          minimum: 0
                          maximum: 9007199254740991
                        cacheReadInputTokens:
                          type: integer
                          minimum: 0
                          maximum: 9007199254740991
                        totalTokens:
                          type: integer
                          minimum: 0
                          maximum: 9007199254740991
                        costMicroUsd:
                          type: integer
                          minimum: 0
                          maximum: 9007199254740991
                        costUsd:
                          type: number
                          minimum: 0
                        callCount:
                          type: integer
                          minimum: 0
                          maximum: 9007199254740991
                        day:
                          type: string
                      required:
                        - model
                        - inputTokens
                        - outputTokens
                        - cacheCreationInputTokens
                        - cacheReadInputTokens
                        - totalTokens
                        - costMicroUsd
                        - costUsd
                        - callCount
                        - day
                      additionalProperties: false
                required:
                  - rows
                additionalProperties: false
        '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:
    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

````