API for Developers

CNPJ and Company Data API for B2B Integrations

Query company data and automate your commercial operations directly in your system, CRM or SaaS platform.

Queries at scale

Automate individual queries, CNPJ lists and company filters.

Simple integration

Use HTTP endpoints and JSON responses in your system, CRM or SaaS product.

Controlled access

Authenticate requests with an API key and track credit usage.

Start for free

Look up any CNPJ for free

Try it right now — no signup, no API key. The public route responds instantly, straight from your terminal or browser:

Get started quickly

Integrate with just a few lines of code

The technical documentation covers authentication, filters, pagination, company counts and result downloads.

HTTP endpoints and JSON responses
Filters by location, CNAE, company size and status
Technical documentation with real examples

Public lookup — no key required

curl -X GET \
  "https://api.cnpjdata.com.br/api/public/companies/33000167000101"

cURL request

curl -X GET "https://api.cnpjdata.com.br/api/companies/01234567000189" \
  -H "X-API-Key: <id>.<secret>"

JSON response

{
  "searchId": "uuid-da-busca",
  "creditsCharged": 1,
  "creditsBalance": 919,
  "cnpjCompleto": "01.234.567/0001-89",
  "razaoSocial": "EMPRESA EXEMPLO COMERCIO LTDA",
  "situacaoCadastralCodigo": "02",
  "uf": "SP"
}

API plans

Choose your integration volume

Pay as you use and scale when your operation needs it.

Micro API

Up to 10,000 records via API

$39.90

Ideal para integrações leves e consultas pontuais via API.

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Starter API

Up to 50,000 records via API

$99.90

Ideal para produtos internos e CNAEs específicos via API.

Create account

Growth API

Up to 200,000 records via API

$169.90

Ideal para portais, SaaS e abrangência estadual via API.

Create account

Business API

Up to 1,000,000 records via API

$299.90

Ideal para operações nacionais e integrações em larga escala via API.

Create account

Ready to connect your application?

Access the complete documentation and see all available endpoints.

Open technical documentation