Brazilayer MCP Server

Give your AI agent access to Brazilian public data — the full company registry and every official sanction list — as MCP tools, paid per call with USDC via the x402 protocol. No signup, no API keys.

Data comes straight from official government sources (Receita Federal company registry, CGU/MTE sanction lists), redistributed as published. Service: www.brazilayer.com · API docs: api.brazilayer.com/docs

Tools

Prices are paid in USDC on Base, per request, by the wallet you configure. The three free sample tools work without any wallet.

Install

One-click (Claude Desktop): download brazilayer-mcp.mcpb from the latest release and open it — Claude Desktop installs the server and prompts for your wallet key (optional).

From source:

git clone https://github.com/brazilayer/mcp brazilayer-mcp
cd brazilayer-mcp && npm install

Claude Code:

claude mcp add brazilayer -e BRAZILAYER_PRIVATE_KEY=0xYOUR_KEY -- npx tsx /path/to/brazilayer-mcp/servidor.ts

Claude Desktop / Cursor (mcpServers config):

{
  "mcpServers": {
    "brazilayer": {
      "command": "npx",
      "args": ["tsx", "/path/to/brazilayer-mcp/servidor.ts"],
      "env": { "BRAZILAYER_PRIVATE_KEY": "0xYOUR_KEY" }
    }
  }
}

Configuration

⚠️ Wallet safety: the key you configure signs real payments. Use a dedicated wallet holding only a small budget (a few dollars covers hundreds of calls), never your main wallet.

How payment works

Each paid tool calls the Brazilayer API. The server replies HTTP 402 with the price and payment terms; this MCP server signs a USDC authorization (EIP-3009, gasless for you) and retries automatically. One tool call ≈ two seconds, end to end. The service is also listed on the x402 Bazaar for autonomous discovery.

Contact

contato@brazilayer.com · Terms & data policy

Also on the official MCP Registry as io.github.brazilayer/mcp.