> ## 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 market readiness > Return public-safe pilot state and supply evidence for requested ISO country × canonical channel cells. Pilot state is an explicit human decision; storefront discovery never opens a market. Global platform coverage is returned as an overlay, not as a country. Supply-query failures are reported as unknown. This endpoint does not enroll a buyer or bypass the alpha opt-in gate. ## OpenAPI ````yaml /v2/buyer-api-v2.yaml post /market-readiness 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: /market-readiness: servers: - url: https://api.interchange.io/api/v2 description: Production server post: tags: - Account summary: Preview market readiness description: >- Return public-safe pilot state and supply evidence for requested ISO country × canonical channel cells. Pilot state is an explicit human decision; storefront discovery never opens a market. Global platform coverage is returned as an overlay, not as a country. Supply-query failures are reported as unknown. This endpoint does not enroll a buyer or bypass the alpha opt-in gate. operationId: previewMarketReadiness requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/MarketReadinessRequest' responses: '200': description: Preview market readiness content: application/json: schema: $ref: '#/components/schemas/MarketReadinessResponse' '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '429': description: RATE_LIMITED (per-IP public endpoint cap). content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: [] components: schemas: MarketReadinessRequest: description: A bounded set of ISO country × canonical channel cells to preview. type: object properties: cells: minItems: 1 maxItems: 50 type: array items: type: object properties: countryCode: description: An assigned ISO 3166-1 alpha-2 country code. type: string enum: - AD - AE - AF - AG - AI - AL - AM - AO - AQ - AR - AS - AT - AU - AW - AX - AZ - BA - BB - BD - BE - BF - BG - BH - BI - BJ - BL - BM - BN - BO - BQ - BR - BS - BT - BV - BW - BY - BZ - CA - CC - CD - CF - CG - CH - CI - CK - CL - CM - CN - CO - CR - CU - CV - CW - CX - CY - CZ - DE - DJ - DK - DM - DO - DZ - EC - EE - EG - EH - ER - ES - ET - FI - FJ - FK - FM - FO - FR - GA - GB - GD - GE - GF - GG - GH - GI - GL - GM - GN - GP - GQ - GR - GS - GT - GU - GW - GY - HK - HM - HN - HR - HT - HU - ID - IE - IL - IM - IN - IO - IQ - IR - IS - IT - JE - JM - JO - JP - KE - KG - KH - KI - KM - KN - KP - KR - KW - KY - KZ - LA - LB - LC - LI - LK - LR - LS - LT - LU - LV - LY - MA - MC - MD - ME - MF - MG - MH - MK - ML - MM - MN - MO - MP - MQ - MR - MS - MT - MU - MV - MW - MX - MY - MZ - NA - NC - NE - NF - NG - NI - NL - 'NO' - NP - NR - NU - NZ - OM - PA - PE - PF - PG - PH - PK - PL - PM - PN - PR - PS - PT - PW - PY - QA - RE - RO - RS - RU - RW - SA - SB - SC - SD - SE - SG - SH - SI - SJ - SK - SL - SM - SN - SO - SR - SS - ST - SV - SX - SY - SZ - TC - TD - TF - TG - TH - TJ - TK - TL - TM - TN - TO - TR - TT - TV - TW - TZ - UA - UG - UM - US - UY - UZ - VA - VC - VE - VG - VI - VN - VU - WF - WS - YE - YT - ZA - ZM - ZW channel: type: string enum: - audio - ctv - display - dooh - google - meta - social required: - countryCode - channel required: - cells MarketReadinessResponse: description: >- Human-decided pilot state with separate domestic and global-overlay supply evidence. type: object properties: cells: type: array items: type: object properties: countryCode: description: An assigned ISO 3166-1 alpha-2 country code. type: string enum: - AD - AE - AF - AG - AI - AL - AM - AO - AQ - AR - AS - AT - AU - AW - AX - AZ - BA - BB - BD - BE - BF - BG - BH - BI - BJ - BL - BM - BN - BO - BQ - BR - BS - BT - BV - BW - BY - BZ - CA - CC - CD - CF - CG - CH - CI - CK - CL - CM - CN - CO - CR - CU - CV - CW - CX - CY - CZ - DE - DJ - DK - DM - DO - DZ - EC - EE - EG - EH - ER - ES - ET - FI - FJ - FK - FM - FO - FR - GA - GB - GD - GE - GF - GG - GH - GI - GL - GM - GN - GP - GQ - GR - GS - GT - GU - GW - GY - HK - HM - HN - HR - HT - HU - ID - IE - IL - IM - IN - IO - IQ - IR - IS - IT - JE - JM - JO - JP - KE - KG - KH - KI - KM - KN - KP - KR - KW - KY - KZ - LA - LB - LC - LI - LK - LR - LS - LT - LU - LV - LY - MA - MC - MD - ME - MF - MG - MH - MK - ML - MM - MN - MO - MP - MQ - MR - MS - MT - MU - MV - MW - MX - MY - MZ - NA - NC - NE - NF - NG - NI - NL - 'NO' - NP - NR - NU - NZ - OM - PA - PE - PF - PG - PH - PK - PL - PM - PN - PR - PS - PT - PW - PY - QA - RE - RO - RS - RU - RW - SA - SB - SC - SD - SE - SG - SH - SI - SJ - SK - SL - SM - SN - SO - SR - SS - ST - SV - SX - SY - SZ - TC - TD - TF - TG - TH - TJ - TK - TL - TM - TN - TO - TR - TT - TV - TW - TZ - UA - UG - UM - US - UY - UZ - VA - VC - VE - VG - VI - VN - VU - WF - WS - YE - YT - ZA - ZM - ZW channel: type: string enum: - audio - ctv - display - dooh - google - meta - social pilotState: type: string enum: - open - closed pilotScope: type: string enum: - domestic - global_overlay - none domesticSupply: $ref: '#/components/schemas/MarketReadinessSupplyItem' globalSupply: $ref: '#/components/schemas/MarketReadinessSupplyItem' required: - countryCode - channel - pilotState - pilotScope - domesticSupply - globalSupply additionalProperties: false required: - cells 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 MarketReadinessSupplyItem: description: >- Public-safe supply evidence for one scope. Unknown is distinct from a successful empty read. type: object properties: scope: type: string enum: - domestic - global status: type: string enum: - available - none - unknown storefrontCount: nullable: true type: integer minimum: 0 maximum: 9007199254740991 namedStorefronts: description: >- Up to 10 public-safe listed storefronts. storefrontCount is the full usable count. maxItems: 10 type: array items: type: object properties: name: type: string domain: nullable: true type: string required: - name - domain additionalProperties: false sourceHealth: type: string enum: - healthy - degraded - unknown required: - scope - status - storefrontCount - namedStorefronts - sourceHealth 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 ````