🇲🇽 MEXICAN BUSINESS DATA

The simplest API for
Mexican fiscal data

RFC validation, CFDI verification, postal codes and company search. Built for developers working with Mexican business data.

Start for free → View endpoints

cURL

      # Validate a Mexican RFC

      curl "https://witheflow.ai/mexdata/v1/rfc/validate?rfc=XAXX010101000" \

        -H "X-API-Key: YOUR_API_KEY"

      # Response

      {

        "rfc": "XAXX010101000",

        "valid": true,

        "type": "generico",

        "format_valid": true,

        "digit_valid": true

      }

API Reference

5 powerful endpoints

Everything you need to work with Mexican fiscal and business data.

GET

/v1/rfc/validate

Validate RFC format, date and verification digit using the official SAT algorithm

GET

/v1/rfc/lookup

Get company name, fiscal regime and status from SAT public records

GET

/v1/cfdi/validate

Verify UUID format for CFDI 4.0 electronic invoices (RFC 4122 compliant)

GET

/v1/postal/info

Get state, municipality and neighborhoods for any Mexican postal code

POST

/v1/company/search

Search Mexican companies by name or business activity using INEGI DENUE database

Pricing

Simple, usage-based pricing

Start free. Scale as you grow.

Free

$0/mo

100 calls / month

All 5 endpoints
RFC & CFDI validation
Postal code lookup
Community support

Built for Mexican tech

Any app that handles Mexican business or fiscal data.

🧾

Accounting & ERP

Validate RFC and CFDI data before processing invoices. Reduce errors and fraud in your accounting pipeline.

🏦

Fintech & KYC

Verify business identity with RFC lookup. Streamline KYC workflows for Mexican companies.

🛒

E-commerce

Validate RFC at checkout for factura requests. Auto-fill company data to improve conversion.

📦

Logistics

Validate postal codes and get neighborhood data for accurate address validation and delivery routing.

The simplest API forMexican fiscal data