DadosBR
MCP ServerFree# MCP DadosBR Servidor MCP focado em dados públicos do Brasil. Oferece duas ferramentas simples e rápidas para **consulta de CNPJ** e **consulta de CEP**, perfeitas para validação de cadastros, preenchimento automático de endereços e enriquecimento de dados em agentes. ## Por que usar * Latência
Capabilities4 decomposed
cnpj data retrieval
Medium confidenceThis capability allows users to retrieve detailed information about a company using its CNPJ (Cadastro Nacional da Pessoa Jurídica) number. It works by sending a JSON-RPC request to the `/mcp` endpoint with the CNPJ as an argument, which then queries public databases to return structured data such as the company's name, legal nature, and address. The use of a stateless design ensures low latency and high availability, leveraging Cloudflare Workers for efficient processing.
Utilizes a stateless architecture with Cloudflare Workers for fast response times and high availability, avoiding reliance on client-side services.
More efficient than traditional REST APIs due to its stateless design and low-latency Cloudflare infrastructure.
cep address lookup
Medium confidenceThis capability enables users to look up address details using a Brazilian postal code (CEP). It operates by accepting a JSON-RPC request at the `/mcp` endpoint, where the CEP is provided as an argument. The server then queries public databases to return information such as street name, neighborhood, and municipality, ensuring that the response is structured for easy integration into applications. The design is optimized for low latency, leveraging caching options if needed.
Designed for low-latency responses using Cloudflare Workers, with optional caching for frequently accessed data to improve performance.
Faster response times compared to traditional address lookup services due to its stateless architecture and optimized cloud deployment.
mcp integration support
Medium confidenceThis capability provides a standardized interface for integrating with the MCP (Model Context Protocol), allowing developers to easily connect their applications to the DadosBR service. It supports both HTTP JSON-RPC and Server-Sent Events (SSE) for real-time data updates. The design ensures compatibility with various agents and IDEs that support MCP, facilitating seamless integration into existing workflows.
Offers dual integration methods (JSON-RPC and SSE) tailored for MCP, enhancing flexibility for developers.
More versatile than single-protocol services, allowing for both request-response and real-time data streaming.
health check endpoint
Medium confidenceThis capability provides a health check endpoint at `/health` to monitor the status of the DadosBR service. It responds with a simple status message indicating whether the service is operational. This is particularly useful for developers who want to ensure that their applications can gracefully handle service outages or degradation.
Provides a simple and efficient way to check service health without requiring complex metrics or configurations.
Simpler and faster than comprehensive monitoring solutions, focusing solely on service availability.
Capabilities are decomposed by AI analysis. Each maps to specific user intents and improves with match feedback.
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Best For
- ✓developers building KYC solutions or CRM integrations
- ✓developers creating applications that require address validation or autocomplete features
- ✓developers building MCP-compatible applications or agents
- ✓developers implementing monitoring solutions for their applications
Known Limitations
- ⚠Dependent on the availability of public data sources; may have rate limits.
- ⚠Limited to Brazilian postal codes; may not cover all regions.
- ⚠Requires an understanding of JSON-RPC and SSE protocols.
- ⚠Only provides basic operational status; does not give detailed metrics.
Requirements
Input / Output
UnfragileRank
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Repository Details
About
# MCP DadosBR Servidor MCP focado em dados públicos do Brasil. Oferece duas ferramentas simples e rápidas para **consulta de CNPJ** e **consulta de CEP**, perfeitas para validação de cadastros, preenchimento automático de endereços e enriquecimento de dados em agentes. ## Por que usar * Latência baixa e alta disponibilidade em Cloudflare Workers * Interface MCP padronizada, pronta para agentes e IDEs compatíveis * Design stateless por padrão. Cache opcional com KV se desejar * Sem dependência de serviços proprietários do lado do cliente ## Tools disponíveis * `cnpj_lookup` **Entrada**: `{ "cnpj": "string" }` com ou sem máscara **Retorno**: dados cadastrais quando disponíveis, por exemplo razão social, nome fantasia, CNAE principal, natureza jurídica, situação, endereço * `cep_lookup` **Entrada**: `{ "cep": "string" }` com ou sem máscara **Retorno**: logradouro, bairro, município, UF, código IBGE e campos correlatos quando disponíveis ## Endpoints * HTTP JSON-RPC: `/mcp` * Server-Sent Events: `/sse` * Saúde: `/health` Exemplo de chamada JSON-RPC: ```json { "jsonrpc": "2.0", "id": "1", "method": "tools/call", "params": { "name": "cep_lookup", "arguments": { "cep": "30130-010" } } } ``` ## Integração rápida * **SSE**: aponte seu cliente MCP para `.../sse` * **HTTP**: aponte para `.../mcp` usando JSON-RPC 2.0 Funciona com agentes e IDEs compatíveis com MCP. Exemplos de configuração estão no repositório. ## Casos de uso * Autocomplete de endereço a partir do CEP * Validação de CNPJ em fluxos de onboarding e KYC * Enriquecimento de dados em CRMs, ERPs e chatbots * Auditoria cívica e aplicações gov-tech locais ## Privacidade e limites O servidor não persiste PII por padrão. Se o cache KV for habilitado, use políticas de retenção mínimas. Respeite limites das fontes públicas utilizadas. Planos e cotas do Cloudflare podem impactar throughput. ## Código e docs * Repositório e exemplos: [https://github.com/cristianoaredes/mcp-dadosbr](https://github.com/cristianoaredes/mcp-dadosbr) * Documentação dos endpoints no README ## Suporte Abra uma issue no GitHub para bugs, dúvidas e sugestões. Roadmap inclui busca por empresa, normalização de formatos e retornos enriquecidos. Brasil, CNPJ, CEP, GovTech, Validação, Endereços, Cloudflare Workers, MCP
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