> ## 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. # Request buyer access > Submit buyer qualification for human review. This public form does not create an account, grant access, or establish organization or email ownership. ## OpenAPI ````yaml /v2/buyer-api-v2.yaml post /auth/buyer-signup-intake 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: /auth/buyer-signup-intake: servers: - url: https://api.interchange.io description: Production signup service post: tags: - Signup summary: Request buyer access description: >- Submit buyer qualification for human review. This public form does not create an account, grant access, or establish organization or email ownership. operationId: submitBuyerSignupIntake requestBody: required: true content: application/json: schema: type: object properties: email: type: string maxLength: 254 format: email pattern: >- ^(?!\.)(?!.*\.\.)([A-Za-z0-9_'+\-\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\-]*\.)+[A-Za-z]{2,}$ first_name: type: string minLength: 1 maxLength: 80 last_name: type: string minLength: 1 maxLength: 80 company: type: string minLength: 1 maxLength: 200 role: nullable: true type: string enum: - brand - agency intent: nullable: true type: string enum: - self_service - assisted_pilot - evaluate - integration_partnership - campaign_management - agent_connection agent_name: nullable: true type: string minLength: 1 maxLength: 200 source: default: agentic-signup type: string enum: - agentic-signup - agentic-login - marketing-site use_case: nullable: true type: string maxLength: 1000 intended_markets: default: [] maxItems: 249 type: array items: type: string minLength: 2 maxLength: 32 intended_channels: default: [] maxItems: 22 type: array items: type: string enum: - display - olv - social - search - ctv - linear_tv - radio - streaming_audio - podcast - dooh - ooh - print - cinema - email - gaming - retail_media - influencer - affiliate - product_placement - sponsored_intelligence - audio - other pilot_budget: nullable: true type: string minLength: 1 maxLength: 100 pilot_timing: nullable: true type: string enum: - ready_now - one_to_three_months - later self_service_experience: nullable: true type: boolean prelaunch_slack_consent: nullable: true type: boolean website: type: string maxLength: 500 required: - email - first_name - last_name - company responses: '201': description: Request buyer access content: application/json: schema: type: object properties: success: type: boolean enum: - true data: type: object properties: ok: type: boolean enum: - true org_ref: nullable: true type: string qualification_route: type: string enum: - solutions_review - market_nurture - manual_review required: - ok - org_ref - qualification_route additionalProperties: false required: - success - data additionalProperties: false '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: [] 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 ````