How does the CPF/CNPJ validation work?

It implements the official Modulo 11 check-digit algorithms to verify the mathematical validity of Brazilian individual and corporate tax identification numbers.

Does this skill support multiple Brazilian banks?

Yes, it provides a flexible architecture with specific implementation patterns that can be adapted for major banks like Banco do Brasil, Itaú, and others.

Can I use this for production-grade Boleto generation?

The skill provides the logic and FEBRABAN-compliant algorithms for barcodes and typeable lines, serving as a robust foundation for production financial systems.

Does it handle Brazilian currency and date formats?

Yes, the skill includes helper patterns for handling BRL currency formatting and Brazilian-specific date logic required for payment due dates.

Brazilian Financial Integration

Name: Brazilian Financial Integration
Author: rafaelkamimura

byrafaelkamimura

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E-commerce Solutions

Integrates Brazilian payment systems including Boleto, PIX, installment plans, and official tax ID validations into your applications.

About

This skill provides Claude with specialized domain knowledge for navigating the complex Brazilian financial ecosystem. It offers standardized patterns for implementing Boleto bancário generation (including barcode and typeable line logic), PIX instant payments, and complex installment (parcelamento) calculations. Additionally, it includes robust validation logic for CPF and CNPJ tax IDs and provides structural guidance for integrating with major Brazilian banking APIs like Banco do Brasil. It is an essential toolkit for developers building fintech solutions, e-commerce platforms, or any system requiring compliance with Brazilian banking standards.

Key Features

Boleto bancário generation with FEBRABAN-compliant barcode logic
Official CPF and CNPJ validation using standard check-digit algorithms
4 GitHub stars
PIX instant payment integration patterns and QR code support
Installment (parcelamento) calculators with interest and schedule management
Domain-driven design patterns for scalable financial modules

Use Cases

Developing payment processing systems for the Brazilian market
Implementing automated billing workflows with Boleto and PIX support
Building fintech applications that require banking API integrations

About

Key Features

Boleto bancário generation with FEBRABAN-compliant barcode logic
Official CPF and CNPJ validation using standard check-digit algorithms
4 GitHub stars
PIX instant payment integration patterns and QR code support
Installment (parcelamento) calculators with interest and schedule management
Domain-driven design patterns for scalable financial modules

Use Cases

Developing payment processing systems for the Brazilian market
Implementing automated billing workflows with Boleto and PIX support
Building fintech applications that require banking API integrations