> ## 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.

# Preview a creative tag sheet

> Parses a CSV, XLS, or XLSX tag sheet without persisting it and returns content-safe creative names, declared sizes, and destination requirements. Tag markup and source URLs are never returned.



## OpenAPI

````yaml /v2/buyer-api-v2.yaml post /creatives/tag-sheet-preview
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:
  /creatives/tag-sheet-preview:
    post:
      tags:
        - Creatives
      summary: Preview a creative tag sheet
      description: >-
        Parses a CSV, XLS, or XLSX tag sheet without persisting it and returns
        content-safe creative names, declared sizes, and destination
        requirements. Tag markup and source URLs are never returned.
      operationId: previewTagSheet
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                asset:
                  type: object
                  properties:
                    data_url:
                      type: string
                      maxLength: 7340032
                    asset_type:
                      type: string
                      enum:
                        - IMAGE
                        - VIDEO
                        - AUDIO
                        - HTML
                        - VAST
                        - ZIP
                    name:
                      type: string
                    declared_sizes:
                      maxItems: 30
                      type: array
                      items:
                        type: object
                        properties:
                          width:
                            type: integer
                            minimum: 0
                            exclusiveMinimum: true
                            maximum: 9007199254740991
                          height:
                            type: integer
                            minimum: 0
                            exclusiveMinimum: true
                            maximum: 9007199254740991
                        required:
                          - width
                          - height
                  required:
                    - data_url
              required:
                - asset
      responses:
        '200':
          description: Preview a creative tag sheet
          content:
            application/json:
              schema:
                type: object
                properties:
                  filename:
                    type: string
                  creative_count:
                    type: integer
                    minimum: 0
                    maximum: 9007199254740991
                  rows:
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: string
                        name:
                          type: string
                        declared_sizes:
                          type: array
                          items:
                            type: object
                            properties:
                              width:
                                type: integer
                                minimum: 0
                                exclusiveMinimum: true
                                maximum: 9007199254740991
                              height:
                                type: integer
                                minimum: 0
                                exclusiveMinimum: true
                                maximum: 9007199254740991
                            required:
                              - width
                              - height
                            additionalProperties: false
                        needs_destination:
                          type: boolean
                      required:
                        - id
                        - name
                        - declared_sizes
                        - needs_destination
                      additionalProperties: false
                required:
                  - filename
                  - creative_count
                  - 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:
      type: object
      properties:
        data:
          type: string
          nullable: true
          enum:
            - null
        error:
          $ref: '#/components/schemas/ApiError'
      required:
        - data
        - error
      additionalProperties: false
      description: Standard error response
    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
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: API key or access token

````