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Server data from the Official MCP Registry
Brazilian company registry (CNPJ) + sanctions screening for AI agents. Pay per call via x402.
About
Brazilian company registry (CNPJ) + sanctions screening for AI agents. Pay per call via x402.
Security Report
7.2
Moderate7.2Low RiskWell-structured MCP server for Brazilian public data with proper authentication via x402 protocol and USDC payments. Private key handling is correctly delegated to viem/accounts library, sensitive configuration uses environment variables, and all tools are properly scoped. Minor code quality observations around error handling do not significantly impact security posture. Supply chain analysis found 1 known vulnerability in dependencies (0 critical, 1 high severity).
3 files analyzed · 4 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Private key (0x…) of the wallet that pays for calls (USDC on Base). Optional: without it, only the free sample tools work.Required
Environment variable: BRAZILAYER_PRIVATE_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-brazilayer-mcp": {
"env": {
"BRAZILAYER_PRIVATE_KEY": "your-brazilayer-private-key-here"
},
"args": [
"-y",
"brazilayer-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
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
| Tool | What it does | Price |
|---|---|---|
cnpj_consultar_empresa | Company registration card by CNPJ | $0.005 |
cnpj_listar_socios | Partners/shareholders of a company | $0.005 |
cnpj_consultar_empresa_completo | Full profile: registration + partners + branches | $0.01 |
cnpj_buscar_empresas | Search companies by name, state, city or activity | $0.01 |
cnpj_buscar_por_socio | Reverse lookup: companies where a person is partner | $0.02 |
integridade_consultar | Sanctions screening: 5 official lists in one call | $0.01 |
cnpj_obter_amostra | Sample company response | free |
integridade_obter_amostra | Sample screening response | free |
Prices are paid in USDC on Base, per request, by the wallet you configure. The two free 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
| Variable | Purpose |
|---|---|
BRAZILAYER_PRIVATE_KEY | Private key (0x…) of the wallet that pays for calls. Needs USDC on Base. Without it, only the free sample tools work. |
BRAZILAYER_API_URL | API base URL. Default: https://api.brazilayer.com |
⚠️ 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.
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