> ## Documentation Index > Fetch the complete documentation index at: https://docs.apostra.com/llms.txt > Use this file to discover all available pages before exploring further. # Get storefront capabilities > Inspect source-level capability diagnostics for a buyer-visible storefront. ## OpenAPI ````yaml /v2/buyer-api-v2.yaml get /storefronts/{storefrontId}/capabilities 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: /storefronts/{storefrontId}/capabilities: get: tags: - Storefronts summary: Get storefront capabilities description: >- Inspect source-level capability diagnostics for a buyer-visible storefront. operationId: getStorefrontCapabilities parameters: - in: path name: storefrontId schema: type: integer minimum: 0 exclusiveMinimum: true maximum: 9007199254740991 description: Storefront ID required: true description: Storefront ID responses: '200': description: Get storefront capabilities content: application/json: schema: $ref: '#/components/schemas/BuyerStorefrontCapabilitiesResponse' '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: BuyerStorefrontCapabilitiesResponse: type: object properties: storefrontId: type: integer minimum: 0 exclusiveMinimum: true maximum: 9007199254740991 description: Storefront ID that was inspected agents: type: array items: $ref: '#/components/schemas/BuyerStorefrontCapabilitySource' description: >- Active source rows behind the storefront. Field name retained for response compatibility. required: - storefrontId - agents additionalProperties: false description: Source-level capability diagnostics for a buyer storefront 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 BuyerStorefrontCapabilitySource: type: object properties: sourceId: type: string description: Inventory source identifier within the storefront sourceName: nullable: true description: Inventory source display name type: string executionType: type: string description: Source execution type agentName: nullable: true description: External sales-agent name when one exists type: string requiresCredentials: nullable: true description: >- Whether buyer-provided credentials are required for this external AdCP source. Null when not applicable or unavailable. type: boolean probeable: type: boolean description: >- Whether this row is an external AdCP sales agent that the capability diagnostic can check probeStatus: type: string enum: - reachable - unreachable - not_applicable - unavailable description: >- Capability availability status. `reachable` means capabilities are available (including in-process synthesized capabilities for adapter and ESA storefronts), possibly from cache. message: nullable: true description: Explanation when the row is not probeable type: string capabilities: nullable: true description: >- Capability summary for external AdCP sources; null for managed sources or failed capability lookups allOf: - $ref: '#/components/schemas/BuyerStorefrontCapabilityDetails' required: - sourceId - sourceName - executionType - agentName - requiresCredentials - probeable - probeStatus - message - capabilities additionalProperties: false description: Source-level storefront capability diagnostic row 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 BuyerStorefrontCapabilityDetails: type: object properties: version: type: string description: AdCP capability version tools: type: array items: type: string description: Tool names reported by the external AdCP source protocols: type: array items: type: string description: Protocols advertised by the external AdCP source features: type: object additionalProperties: {} description: Feature flags advertised by the external AdCP source publisherDomains: description: Publisher domains advertised by this source type: array items: type: string channels: description: Advertising channels advertised by this source type: array items: type: string countries: description: >- ISO 3166-1 alpha-2 primary countries advertised by this source; authoritative for a source on the Agent-supplied path; omitted when unknown type: array items: type: string accountResolution: nullable: true description: How the source resolves buyer accounts; null when not advertised. type: string enum: - explicit_account_id - implicit_from_sync requireOperatorAuth: type: boolean description: >- Capability-payload copy of whether buyer-provided credentials are required. defaultBilling: nullable: true description: Default billing mode advertised by the source type: string supportedBillings: type: array items: type: string description: Billing modes supported by the source reportingDeliveryMethods: nullable: true type: array items: type: string enum: - webhook - offline sandboxSupported: type: boolean description: Whether the source advertises sandbox support synthetic: type: boolean description: >- Whether capabilities were synthesized rather than returned directly by the source required: - version - tools - protocols - features - accountResolution - requireOperatorAuth - defaultBilling - supportedBillings - reportingDeliveryMethods - sandboxSupported - synthetic additionalProperties: false description: Capability summary for an external AdCP storefront source securitySchemes: bearerAuth: type: http scheme: bearer description: API key or access token ````