Pull your CONTPAQi reports into your own systems

What you can build on CONTPAQi Contabiliza

• Reconcile CFDI against pólizas

  Build this

  Runs Conciliación de IVA Acreditable CFDI - Pólizas under Reportes (reports), Control de IVA, for one empresa (company file) and a range of periods.

  Takes

  Empresa, ejercicio, first period, last period

  Returns

  Date, type, UUID, supplier RFC, name, payment method, total in MXN, IVA acreditable, linked pólizas

• Get the Balanza de comprobación

  Build this

  Runs the Balanza de comprobación under Reportes, Estados financieros, for one empresa, ejercicio and period, at the level you choose.

  Takes

  Empresa, ejercicio, period or range, nivel (optional), tipo de cuentas (optional)

  Returns

  Account number, account name, opening balance, debits, credits, closing balance

• List documents loaded from XML

  Build this

  Reads the Ingresos (income) or Egresos (expenses) list, where the XML you loaded or downloaded from the SAT appear as documentos administrativos.

  Takes

  Empresa, list (Ingresos or Egresos), date from (optional)

  Returns

  Date, UUID, RFC, name, total, currency

• Download XML from the SAT portal

  Build this

  Runs Descarga de XML (XML download) in the Utilerías (utilities) menu for one empresa, which downloads its issued or received XML from the SAT portal.

  Takes

  Empresa, emitidos or recibidos, date range

  Returns

  Empresa, RFC, emitidos or recibidos, date range, documents downloaded

Automate CONTPAQi Contabiliza with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• CFDI with no póliza, before the monthly close

  Build this

  Starts

  Monthly on day 3 at 8:00, Mexico City time

  Step 1

  For each empresa you name, reconcile last month's CFDI against the pólizas.

  Step 2

  Keep the CFDI with no linked póliza, or with more than one.

  Step 3

  Email you the list, one section per empresa, with date, UUID, RFC, name, total and IVA acreditable.

• Weekly Balanza de comprobación for each empresa

  Build this

  Starts

  Every Monday at 7:00, Mexico City time

  Step 1

  For each empresa, get the Balanza de comprobación for the current period.

  Step 2

  Keep the accounts whose closing balance changed since the last run.

  Step 3

  Post them with account number, name and balances to your reporting webhook.

• New received CFDI, downloaded and listed

  Build this

  Starts

  Every weekday at 9:00, Mexico City time

  Step 1

  For each empresa, download yesterday's recibidos XML from the SAT portal.

  Step 2

  Read the Egresos list and keep the documents not there on the last run.

  Step 3

  Email you the new ones with date, UUID, RFC, name and total.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Reconcile CFDI against pólizas” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "app.contpaqinube.com/reconcile_cfdi_against_polizas",
    "input": {
      "empresa": "Acme Distribuciones",
      "ejercicio": 2026,
      "first_period": 10,
      "last_period": 10
    }
  }'

{
  "status": "completed",
  "data": {
    "empresa": "Acme Distribuciones",
    "periods": "2026-10",
    "cfdi": [
      {
        "date": "2026-10-14",
        "type": "Ingreso",
        "uuid": "7F3A2C10-4B8E-4D21-9A6F-2E5C8B1D0A47",
        "rfc_proveedor": "NWT150312AB4",
        "nombre": "Northwind Logística",
        "metodo_pago": "PUE",
        "total_mxn": 18560,
        "iva_acreditable": 2560,
        "polizas": [
          "Egresos 214"
        ]
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

CONTPAQi Contabiliza’s own options

CONTPAQi's developer portal offers two REST APIs in JSON, Timbra v2 and Timbra v3, for stamping and cancelling CFDI. Each needs a subscription to that product and an administrator's authorization. For reports and accounting data in CONTPAQi Contabiliza, the documented route is the app itself, with exports to PDF, HTML and Excel.

Read on November 12, 2026: CONTPAQi Nube developer portal, Listado de reportes de CONTPAQi Contabiliza, Configuraciones previas en CONTPAQi Contabiliza.

Signing in to CONTPAQi Contabiliza

CONTPAQi Contabiliza signs you in with a CONTPAQi Nube account: your email address and password, then Acceder. The owner or an administrator of each empresa invites the other users and decides who has access. With Fous you sign in once through that sign-in with your own account: the login is sealed with AES-256, and an expired session is signed back in.

Worth knowing

Empresas are managed from Contabiliza

Empresas can only be created, opened or deleted in CONTPAQi Contabiliza, and the owner or an administrator controls invitations and roles. A method takes the empresa as an input and sees only the empresas your account was invited to.

Reports open in a new browser tab

Each report opens in an additional tab after you choose its filters and press Ejecutar reporte, so the same report can run several times with different parameters. It can be saved as PDF, HTML or Excel.

Downloaded XML become documents

Descarga de XML downloads the issued or received XML for the empresa's RFC from the SAT portal and converts them into documentos administrativos, listed by type: Ingresos, Egresos, Ventas and others.

Period 13 and blank rows

The Balanza de comprobación includes the adjustment period, periodo 13, when you choose it as the last period. In the CFDI to pólizas reconciliation, a CFDI with no póliza, or with more than one, shows a blank row.

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