cnpj.ia.br MCP Server: Install & Setup

Install cnpj.ia.br in Claude Code

Claude Code

claude mcp add --transport http cnpj-ia-br https://mcp.cnpj.ia.br

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "cnpj-ia-br": {
      "url": "https://mcp.cnpj.ia.br"
    }
  }
}

Your client opens a browser window to sign in on first use.

Frequently asked questions

What does the cnpj.ia.br MCP server do?

Brazilian company data (CNPJ) from Receita Federal: lookup, filtered search, phones, e-mails and partners (masked CPF).

Is the cnpj.ia.br MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does cnpj.ia.br run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add cnpj.ia.br to Claude Code?

Run: claude mcp add --transport http cnpj-ia-br https://mcp.cnpj.ia.br

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