DeHor-Labs/mcp-fiscal-brasil

What it solves

mcp-fiscal-brasil provides a unified interface for AI assistants to interact with the complex Brazilian fiscal system. It eliminates the need for custom development, multiple government portal authentications, and deep domain knowledge to access data regarding CNPJ, CPF, NF-e, NFSe, SPED, and eSocial.

How it works

It operates as a Model Context Protocol (MCP) server that connects AI agents to various data sources, including the Receita Federal, BrasilAPI, and state SEFAZs. It offers a mix of offline parsing (XML, XSD validation), embedded reference tables, and real-time API calls. For advanced features like SEFAZ status checks or document downloading, it supports opt-in mTLS authentication using A1 digital certificates, handled locally to ensure security.

Who it’s for

Accountants, ERP/CRM developers, and businesses operating in Brazil that want to integrate fiscal compliance and due diligence tools directly into their AI-powered workflows.

Highlights

• Zero-Configuration Start: Works immediately without API keys using free sources like BrasilAPI.
• Agentic Tools: High-level tools for complex tasks such as risk_score_supplier for vendor due diligence and compare_tax_regimes for tax planning.
• Deep Fiscal Vertical: Native support for NF-e parsing, DANFE generation, SPED analysis, and the 2026 Tax Reform (IBS/CBS).
• Multi-Interface Support: Available as an MCP server, a standalone CLI, a REST API with a Web UI, and a Node.js wrapper.
• Secure Certificate Handling: A1 certificates for SEFAZ communication are processed locally and never sent to external servers.