Marketplace · API · x402

api.brazilayer.com/v1/cnpj/socio/busca

Reverse lookup: find every Brazilian company where a given person or entity appears as partner/shareholder, by name (full-text, accent-insensitive). Returns partner name, company CNPJ and legal name, role and entry date. The highest-value query for due diligence, with data straight from the official Receita Federal CNPJ registry (personal tax IDs come pre-masked from the source). Free sample, no payment: https://api.brazilayer.com/v1/cnpj/amostra

Endpoint	`https://api.brazilayer.com/v1/cnpj/socio/busca`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~684 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x3Cc1D8ee1dfdFd326c19B0884B8dF4b24B623f0c
method	GET
last updated	2026-11-11T11:31:07.631Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.brazilayer.com/v1/cnpj/socio/busca
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-6d3184aa2d36d161

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}