> ## Documentation Index > Fetch the complete documentation index at: https://docs.arcuserp.com/llms.txt > Use this file to discover all available pages before exploring further. # List vendor bills > Returns a paginated list of vendor bills (AP invoices) for the entity. Supports filtering by `vendor_account_id`, `status` (draft / pending_approval / approved / partially_paid / paid / void), and `date_range`. Results are cursor-paginated using `next_cursor`. Requires `purchasing:read` scope. ## OpenAPI ````yaml /openapi.yaml get /vendor-bills openapi: 3.1.0 info: title: Arcus ERP Public API version: 1.0.0 description: > Arcus ERP public REST API. Designed for external integrations and data migration. **Authentication.** Bearer token (API key) via the `Authorization` header. Format: `Authorization: Bearer ark_live_ent__` (or `ark_test_*` for sandbox). API keys are issued per-entity in **Settings > Developers > API Keys**. **Entity scoping.** The entity is encoded in the API key prefix; routes are flat (e.g. `/v1/accounts`, `/v1/orders`, `/v1/products`). A small set of platform endpoints (migration, reconciliation, events, webhook endpoints, API keys) use the `/v1/entities/{entity_id}/...` form -- those are noted in their tags. **Key capabilities.** - Related-resource hydration via `?expand[]=` (see `x-arcus-expand` on each resource). - Cursor-based pagination (`starting_after` / `ending_before` / `limit`). - Idempotency via the `Idempotency-Key` header. - Webhook events for asynchronous notification. - Conditional requests / ETag for cache validation. servers: - url: https://api.arcuserp.com/v1 description: Arcus ERP API (accepts both live `ark_live_*` and test `ark_test_*` keys) - url: https://dev-api.arcuserp.com/v1 description: >- Dev sandbox API (test-only data, accepts `ark_test_*` keys against dev RDS) security: [] paths: /vendor-bills: get: tags: - Purchasing summary: List vendor bills description: > Returns a paginated list of vendor bills (AP invoices) for the entity. Supports filtering by `vendor_account_id`, `status` (draft / pending_approval / approved / partially_paid / paid / void), and `date_range`. Results are cursor-paginated using `next_cursor`. Requires `purchasing:read` scope. operationId: listVendorBillsV1 parameters: - name: status in: query schema: type: string - name: vendor_id in: query schema: type: string format: uuid - name: limit in: query schema: type: integer default: 25 maximum: 100 - name: starting_after in: query schema: type: string - name: created_after in: query schema: type: string format: date-time description: Filter bills created on or after this timestamp (ISO 8601). - name: created_before in: query schema: type: string format: date-time description: Filter bills created on or before this timestamp (ISO 8601). - name: due_before in: query schema: type: string format: date description: >- Filter bills with due_date on or before this date (ISO 8601 date). Pass today's date to get overdue bills only, or today + N days for the "due in N days" window. - name: expand[] in: query schema: type: array items: type: string enum: - data.lines - data.lines.product - data.payments - data.gl_entries - data.vendor - data.purchase_order style: form explode: true responses: '200': description: Paginated list of vendor bills content: application/json: schema: type: object properties: object: type: string enum: - list data: type: array items: $ref: '#/components/schemas/VendorBill' has_more: type: boolean '401': $ref: '#/components/responses/Error' '403': $ref: '#/components/responses/Error' security: - ApiKeyAuth: [] components: schemas: VendorBill: type: object description: A vendor invoice (AP). Posts to AP and inventory/expense on approval. properties: id: type: string format: uuid object: type: string enum: - vendor_bill entity_id: type: string format: uuid readOnly: true bill_number: type: string readOnly: true description: Sequential bill number per entity. vendor_invoice_number: type: string nullable: true description: Vendor's invoice number. vendor_id: type: string format: uuid po_id: type: string format: uuid nullable: true status: type: string enum: - draft - pending_approval - approved - rejected - paid - partially_paid - voided readOnly: true bill_date: type: string format: date due_date: type: string format: date nullable: true subtotal: type: number tax_total: type: number shipping_total: type: number bill_total: type: number amount_paid: type: number readOnly: true balance_due: type: number readOnly: true currency: type: string default: USD payment_term_id: type: string format: uuid nullable: true notes: type: string nullable: true metadata: type: object nullable: true created_at: type: string format: date-time readOnly: true updated_at: type: string format: date-time readOnly: true ErrorEnvelope: type: object description: | Canonical error response envelope. All API errors use this shape. required: - error - code properties: error: type: string description: Machine-readable error key example: not_found code: type: string description: Machine-readable error code (often same as error) example: not_found type: type: string enum: - validation_error - permission_error - not_found - conflict - rate_limit - internal - expand_error - not_implemented example: not_found hint: type: string description: Human-readable one-sentence explanation (English) example: >- The requested order does not exist or does not belong to this entity. param: type: string description: The parameter that caused the error, if applicable example: expand[0] required: type: string description: The scope required (only on insufficient_scope errors) example: accounts:read request_id: type: string description: >- Unique request ID for support tracing (maps to CloudWatch log stream) example: req_abc123 responses: Error: description: Error response (400/401/403/404/409/422/429/500) content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' securitySchemes: ApiKeyAuth: type: http scheme: bearer description: | API key issued per entity via Settings > Developers > API Keys. Each key carries scopes (e.g. orders:read, products:write). Bearer token format: Authorization: Bearer ark_live_ent__ Test keys use ark_test_ent__. Both are issued per entity via Settings > Developers > API Keys. ````