> ## Documentation Index > Fetch the complete documentation index at: https://docs.filexpress.app/llms.txt > Use this file to discover all available pages before exploring further. # Cerrar caja > Cierra la caja con el efectivo declarado y calcula la diferencia contra lo esperado. **Permiso requerido:** `cash_register.operate` ## OpenAPI ````yaml /api-reference/openapi.json post /cash-registers/{id}/close openapi: 3.0.3 info: title: FileXpress API Externa version: 1.0.0 description: >- API para integrar sistemas de terceros con FileXpress: facturación, RRHH, contabilidad, inventario, proyectos, cuentas por cobrar y pagar, tesorería, precios y promociones y caja. servers: - url: https://api.filexpress.app/api/external description: Producción security: - ApiKey: [] tags: - name: General - name: Facturación · Ventas - name: Facturación · Compras - name: Facturación · Clientes - name: Facturación · Proveedores - name: Facturación · Productos - name: Catálogos - name: RRHH · Empleados - name: RRHH · Asistencia - name: RRHH · Permisos - name: RRHH · Planillas - name: Contabilidad - name: Inventario - name: Proyectos - name: Cuentas por cobrar - name: Cuentas por pagar - name: Tesorería - name: Precios y promociones - name: Caja paths: /cash-registers/{id}/close: post: tags: - Caja summary: Cerrar caja description: >- Cierra la caja con el efectivo declarado y calcula la diferencia contra lo esperado. **Permiso requerido:** `cash_register.operate` parameters: - name: id in: path required: true description: ID de la caja schema: type: string format: uuid example: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11 - $ref: '#/components/parameters/IdempotencyKey' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CashRegisterCloseRequest' example: declared_amount: 295 notes: Sin novedades cash_count_breakdown: bills: hundred: 0 fifty: 0 twenty: 12 ten: 5 five: 0 one: 0 coins: quarter: 20 dime: 0 nickel: 0 penny: 0 total: 295 responses: '200': description: Caja cerrada content: application/json: schema: type: object required: - status - data properties: status: type: boolean example: true data: $ref: '#/components/schemas/CashRegister' example: status: true data: id: 9d1c5a3e-4b7f-4e2a-9c1d-2f6b8a0e7c11 branch_id: 3b8e2f10-7c4d-4a9e-b1f2-5d6c7e8f9a01 status: closed cashier: id: 3b8e2f10-7c4d-4a9e-b1f2-5d6c7e8f9a01 name: Ana Martínez opening_date: '2026-10-06T08:00:00-06:00' closing_date: '2026-10-06T18:00:00-06:00' opening_amount: 100 declared_amount: 295 difference_amount: 0 total_sales: 410 total_cash_sales: 215 total_card_sales: 180 total_other_sales: 15 total_expenses: 20 total_other_incomes: 0 notes: null opened_by: 'API: Mi POS' closed_by: 'API: Mi POS' headers: Idempotent-Replayed: $ref: '#/components/headers/IdempotentReplayed' '401': $ref: '#/components/responses/E401' '403': $ref: '#/components/responses/E403' '404': description: No encontrado o de otro negocio content: application/json: schema: $ref: '#/components/schemas/Error' example: status: false message: Cash register not found '409': description: Caja ya cerrada o conflicto de idempotencia content: application/json: schema: $ref: '#/components/schemas/Error' examples: closed: summary: Caja ya cerrada value: status: false message: Cash register is not open. idem_body: summary: Idempotency-Key reutilizada con otro cuerpo value: status: false message: >- This Idempotency-Key was already used with a different request. idem_busy: summary: Petición con la misma llave en proceso value: status: false message: >- A request with this Idempotency-Key is already being processed. '422': description: Validación o arqueo que no cuadra content: application/json: schema: $ref: '#/components/schemas/Error' example: status: false message: >- The cash count breakdown total does not match the declared amount. '429': $ref: '#/components/responses/E429' components: parameters: IdempotencyKey: name: Idempotency-Key in: header required: false description: >- Opcional. Llave única por operación (máx. 100 caracteres, vale 24 h por integración). Un reintento con la misma llave y el mismo cuerpo devuelve la respuesta original (header `Idempotent-Replayed: true`) sin repetir la operación; con otro cuerpo, o mientras la primera sigue en proceso, responde 409. schema: type: string maxLength: 100 example: pago-2026-10-06-000123 schemas: CashRegisterCloseRequest: type: object properties: declared_amount: type: number minimum: 0 description: Efectivo contado. notes: type: string maxLength: 500 cash_count_breakdown: type: object properties: bills: type: object properties: hundred: type: integer minimum: 0 fifty: type: integer minimum: 0 twenty: type: integer minimum: 0 ten: type: integer minimum: 0 five: type: integer minimum: 0 one: type: integer minimum: 0 description: Cantidad de billetes por denominación. coins: type: object properties: quarter: type: integer minimum: 0 dime: type: integer minimum: 0 nickel: type: integer minimum: 0 penny: type: integer minimum: 0 description: Cantidad de monedas por denominación. total: type: number description: Total del arqueo; debe coincidir con declared_amount. required: - total required: - declared_amount CashRegister: type: object properties: id: type: string format: uuid branch_id: type: string format: uuid status: type: string description: Estado. enum: - open - closed cashier: type: object properties: id: type: string format: uuid name: type: string nullable: true required: - id opening_date: type: string format: date-time closing_date: type: string format: date-time nullable: true opening_amount: type: number nullable: true declared_amount: type: number nullable: true difference_amount: type: number nullable: true description: Declarado − esperado. total_sales: type: number nullable: true total_cash_sales: type: number nullable: true total_card_sales: type: number nullable: true total_other_sales: type: number nullable: true total_expenses: type: number nullable: true total_other_incomes: type: number nullable: true notes: type: string nullable: true opened_by: type: string nullable: true description: 'Quien abrió (desde la API: "API: ").' closed_by: type: string nullable: true required: - id - status Error: type: object properties: status: type: boolean example: false message: type: string errors: type: object additionalProperties: type: array items: type: string description: Errores por campo (solo en validación). required: - status - message headers: IdempotentReplayed: description: >- `true` cuando la respuesta es la repetición de una petición anterior con la misma Idempotency-Key. schema: type: string enum: - 'true' responses: E401: description: API Key ausente o inválida content: application/json: example: status: false message: Invalid API Key. E403: description: Integración sin el permiso requerido o desactivada content: application/json: example: status: false message: This integration does not have the 'hr.employees' permission. required_scope: hr.employees E429: description: Límite de peticiones excedido content: application/json: example: status: false message: Rate limit exceeded. Please try again later. rate_limit: 100 securitySchemes: ApiKey: type: apiKey in: header name: X-API-Key description: API Key de la integración (Integraciones → Nueva Integración). ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.