MCP server exposing 1 tool for cnpj-br.
This URL is a JSON-RPC 2.0 endpoint over HTTP. Issue POST requests with a JSON-RPC body. Browsers and search crawlers land here on GET.
POST https://gateway.pipeworx.io/cnpj-br/mcp
Content-Type: application/json
{"jsonrpc":"2.0","id":1,"method":"tools/list"}cnpj_lookup — Look up a Brazilian company in the CNPJ registry (Receita Federal, Brazil's federal tax authority) — the primary KYB / due-diligence check for any Brazil company. Give a 14-digit CNPJ (punctuation ok: "33.683.111/0002-80") and get legal name (razão social), trade name, registration status, opening date, legal nature, main CNAE activity, address, share capital, company size, Simples Nacional / MEI tax-regime flags, and the partner/officer list (QSA) with roles. Example: cnpj_lookup({ cnpj: "33683111000280" })Code samples (curl / TypeScript / one-click client install), schemas, and the live playground are on the pack page:
https://pipeworx.io/packs/cnpj-br/
Pipeworx is an open MCP gateway connecting AI agents to live data. pipeworx.io