Find a Brazilian company's CNPJ from its website or name

Liveby CNPJ finder

Give a website (natura.com.br) or a company name (Natura Cosméticos) and get its CNPJ with the evidence: the domain owner registered at registro.br, the CNPJ printed on the site, or Google results that pair the name with a CNPJ.

Every CNPJ is checked for valid digits; ambiguous names come back with the other candidates and a confidence level. A CNPJ given as query is returned as is. Pass the result to dossier.br-company for the official record.

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How it works

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For developersSummary, tool id, API call and input schema

Find a company CNPJ API by CNPJ finder, callable through Superpowers. It costs $0.003 per call, charged only when the call succeeds. Call it with one API key: POST /v1/run with "tool": "cnpjfind.find", or over MCP with run_tool.

Tool id
Price per call: $0.003 / call

Call it

Also over MCP as run_tool

curl -X POST https://superpowers.tools/v1/run \
  -H 'Authorization: Bearer $SP_KEY' \
  -d '{"tool":"cnpjfind.find","input":{"query":"agência de marketing"},"idempotency_key":"example-request-1"}'

Input

2 fields · 1 required

{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "minLength": 2,
      "maxLength": 200,
      "description": "Company website (natura.com.br, https://www.nubank.com.br), company name (Natura Cosméticos) or a CNPJ"
    },
    "city": {
      "type": "string",
      "maxLength": 80,
      "description": "Optional city or state to tell apart companies with similar names, e.g. São Paulo"
    }
  }
}