> ## 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. # Get invoice activity > Invoice activity for the caller's org (status, kind, currency, amount, due/paid date). Rows project from the org's issued IU fee invoices (kind: fees) — empty until the org's first charged billing cycle closes. Dark-metered (cost_bearer=platform) usage is never billable and never appears. ## OpenAPI ````yaml /v2/storefront-api-v2.yaml get /billing/invoice-activity openapi: 3.0.0 info: title: Scope3 Storefront API version: 2.0.0 description: |- REST API for partners to manage storefronts, 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: 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 storefronts - name: AI Usage description: Storefront AI token usage visibility by model - name: MCP description: Model Context Protocol endpoints paths: /billing/invoice-activity: servers: - url: https://api.interchange.io/api/v2 description: Production server get: tags: - Buyer Billing summary: Get invoice activity description: >- Invoice activity for the caller's org (status, kind, currency, amount, due/paid date). Rows project from the org's issued IU fee invoices (kind: fees) — empty until the org's first charged billing cycle closes. Dark-metered (cost_bearer=platform) usage is never billable and never appears. operationId: getInvoiceActivity responses: '200': description: Get invoice activity content: application/json: schema: $ref: '#/components/schemas/InvoiceActivityResponse' '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: InvoiceActivityResponse: description: >- Invoice activity for the caller’s org, newest first. Empty until the first billing period closes. type: object properties: rows: type: array items: $ref: '#/components/schemas/InvoiceActivityRow' required: - rows additionalProperties: false ErrorResponse: description: Standard error response type: object properties: data: type: string nullable: true enum: - null error: $ref: '#/components/schemas/ApiError' required: - data - error additionalProperties: false InvoiceActivityRow: description: One row of invoice activity for a buyer (or seller) org. type: object properties: status: description: Status of one invoice activity row type: string enum: - open - accruing - paid - overdue ref: description: Short reference/number for this activity row, when assigned type: string label: description: Human-readable description of the invoice activity row type: string kind: description: >- What the invoice line is for: media spend, platform fees, metered AI usage, or a credit-line purchase type: string enum: - media - fees - usage - credit_purchase currency: description: ISO 4217 currency code example: USD type: string minLength: 3 maxLength: 3 pattern: ^[A-Z]{3}$ amountMinor: description: Invoice amount in minor units (e.g. cents for USD) type: integer minimum: -9007199254740991 maximum: 9007199254740991 dueAt: description: Payment due date (ISO 8601), when the row is a formal invoice 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))$ paidAt: description: When the invoice was paid (ISO 8601) 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))$ invoiceRef: description: Reference to the underlying invoice document, when one exists type: string meta: description: Additional row-kind-specific metadata type: object properties: activityKey: description: Internal key correlating this row to its source activity type: string iuQuantity: description: >- Inventory-unit quantity backing a usage row, when `kind` is "usage". Usage rows appear only after the IU rate-card is ratified (AI-3027) and always exclude cost_bearer=platform (dark meter) events. type: number additionalProperties: false required: - status - label - kind - currency - amountMinor 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 securitySchemes: bearerAuth: type: http scheme: bearer description: API key or access token ````