> ## 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. # Assert billing readiness for a buyer account > Assert that the named party (operator or advertiser) is billable for this account relationship (AdCP account-setup dispositions §5). Unblocks any grant awaiting direct-billed activation for the same party, and automatically supersedes any existing active assertion for it. Agent-billed (Interchange-settled) accounts never need this. ## OpenAPI ````yaml /v2/storefront-api-v2.yaml post /account-mappings/relationships/{relationshipId}/ready-to-invoice openapi: 3.0.0 info: title: Scope3 Storefront API version: 2.0.0 description: >- REST API for partners to manage Seller Accounts, 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: Asks description: >- What you are waiting on Scope3 for — support, product, and supply asks in one list - 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 Seller Accounts - name: AI Usage description: Seller Account AI token usage visibility by model - name: MCP description: Model Context Protocol endpoints paths: /account-mappings/relationships/{relationshipId}/ready-to-invoice: post: tags: - Storefront summary: Assert billing readiness for a buyer account description: >- Assert that the named party (operator or advertiser) is billable for this account relationship (AdCP account-setup dispositions §5). Unblocks any grant awaiting direct-billed activation for the same party, and automatically supersedes any existing active assertion for it. Agent-billed (Interchange-settled) accounts never need this. operationId: assertSellerAccountReadyToInvoice parameters: - in: path name: relationshipId schema: anyOf: - type: integer format: int64 - type: string - type: number required: true requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/AssertReadyToInvoiceBody' responses: '200': description: Assert billing readiness for a buyer account content: application/json: schema: $ref: '#/components/schemas/ReadyToInvoiceAssertion' '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: No account relationship with this id under your storefront. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - bearerAuth: [] components: schemas: AssertReadyToInvoiceBody: type: object properties: invoiceParty: type: string enum: - operator - advertiser billingEntity: type: object properties: legal_name: type: string minLength: 1 maxLength: 200 vat_id: type: string pattern: ^[A-Z]{2}[A-Z0-9]{2,13}$ tax_id: type: string maxLength: 30 registration_number: type: string maxLength: 50 address: type: object properties: street: type: string maxLength: 200 city: type: string maxLength: 100 postal_code: type: string maxLength: 20 region: type: string maxLength: 100 country: type: string pattern: ^[A-Z]{2}$ required: - street - city - postal_code - country additionalProperties: false contacts: maxItems: 10 type: array items: type: object properties: role: type: string enum: - billing - legal - creative - general name: type: string maxLength: 200 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,}$ phone: type: string maxLength: 30 required: - role additionalProperties: false bank: type: object properties: account_holder: type: string maxLength: 200 iban: type: string pattern: ^[A-Z]{2}[0-9]{2}[A-Z0-9]{4,30}$ bic: type: string pattern: ^[A-Z]{4}[A-Z]{2}[A-Z0-9]{2}([A-Z0-9]{3})?$ routing_number: type: string maxLength: 30 account_number: type: string maxLength: 30 required: - account_holder additionalProperties: false ext: type: object additionalProperties: {} required: - legal_name additionalProperties: false authority: type: string enum: - crm - erp - finance_staff - external_workflow evidence: type: object properties: reference: type: string maxLength: 200 note: type: string maxLength: 1000 additionalProperties: false validUntil: 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))$ required: - invoiceParty - billingEntity - authority additionalProperties: false description: >- Assert that the named party is billable for this account relationship, unblocking any grant awaiting direct-billed activation. Superseding an existing active assertion for the same party is automatic. ReadyToInvoiceAssertion: type: object properties: id: type: string relationshipId: type: string invoiceParty: type: string enum: - operator - advertiser billingEntity: type: object additionalProperties: {} authority: type: string enum: - crm - erp - finance_staff - external_workflow evidence: type: object properties: reference: type: string maxLength: 200 note: type: string maxLength: 1000 additionalProperties: false state: type: string enum: - active - revoked - expired validFrom: type: string validUntil: nullable: true type: string supersedesId: nullable: true type: string createdAt: type: string createdBy: type: string required: - id - relationshipId - invoiceParty - billingEntity - authority - evidence - state - validFrom - validUntil - supersedesId - createdAt - createdBy additionalProperties: false 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 ````