# CNPJ Aberto, free: Company discovery API

> Busca empresas com filtros combinados (UF, CNAE, município, situação, capital, porte, nome etc.).

CNPJ Aberto's Gratuito plan for the company discovery API costs $0.00 per 1,000 companies. We check each provider's docs for 13 fields. CNPJ Aberto's docs list 1: Type and status.
We haven't run CNPJ Aberto through [our company discovery API benchmark](https://datacircle.dev/best-company-discovery-api.txt) yet.
This plan is free. We rank 1,165 plans for company discovery APIs by price. Half the plans cost $0.525 or less per 1,000 companies. [See the best free company discovery API plan.](https://datacircle.dev/best-company-discovery-api.txt)
[StackScan's $189 monthly plan](https://datacircle.dev/company-discovery-apis/stackscan/189-monthly-enterprise-post-v1-tech-lookup-lists/llms.txt) is the cheapest paid plan per 1,000 companies. StackScan's $189 monthly plan charges nothing per call. You get as many companies as StackScan's rate limit allows. [Seltz's pay-as-you-go plan](https://datacircle.dev/company-discovery-apis/seltz/pay-as-you-go-pay-as-you-go-post-v1-search-search-base/llms.txt) costs the least for 10,000 companies a month: $0.03.
[PeopleSearch.im's $5 pack](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) covers any number of companies. PeopleSearch.im's $5 pack costs less up front than StackScan's $189 monthly plan.
[GetProspect](https://datacircle.dev/company-discovery-apis/getprospect/49-monthly/llms.txt), [Hunter](https://datacircle.dev/company-discovery-apis/hunter/49-monthly-starter-post-discover/llms.txt) and [PeopleSearch.im](https://datacircle.dev/company-discovery-apis/peoplesearch-im/5-pack/llms.txt) are the best company discovery API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/company-discovery-apis/cnpj-aberto/free
- [Company discovery API: the best of 100+ providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://cnpjaberto.com.br/planos?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `GET https://cnpjaberto.com.br/api/busca-avancada`
- API key: with the plan, on https://cnpjaberto.com.br/planos?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Its API docs: https://cnpjaberto.com.br/api-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing#endpoint-GET-/api/busca-avancada
- Sold by: CNPJ Aberto (https://cnpjaberto.com.br?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 8%
- Type and status: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: page of 20
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Most per search: 20
- Also pays for: from the same budget: GET /api/cnpj/{cnpj} · GET /api/cnpj/{cnpj}/filiais · GET /api/socio/empresas · GET /api/socios/busca · GET /api/cnae/{codigo}/stats · GET /api/municipios-por-uf · GET /api/municipios/search · GET /api/intelligence/rede

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Busca empresas com filtros combinados (UF, CNAE, município, situação, capital, porte, nome etc.).

## Data

- Freshness: 1 month
- Countries: Brazil
- Keep data: no limit
- Use data: 4. Uso permitido: "Você pode utilizar a Plataforma para: Consultar dados públicos de empresas para fins legítimos (due diligence, compliance, análise comercial, jornalismo, etc.). Integrar dados via API dentro dos limites do seu plano. Exportar dados nos formatos disponíveis para uso pessoal ou profissional." 5. Uso proibido: "É expressamente proibido: Utilizar bots, scrapers ou mecanismos automatizados para contornar os limites de uso. Revender ou redistribuir dados obtidos pela Plataforma como base de dados independente. Utilizar os dados para fins ilegais, discriminatórios ou que violem a privacidade de terceiros. Tentar acessar áreas restritas do sistema ou comprometer a segurança da Plataforma. Criar múltiplas contas para contornar limites de uso."

## Plan

- Pay: R$0
- You get: 200 requests a day
- Enough for: 200 pages a day

## Rate limit

- Per day: 200
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: at least one of cnae, municipio_codigo or nome_empresa. Optional: uf, situacao, capital_min, capital_max, porte, municipio_uf, mei, com_email, com_telefone, email, telefone, page, per_page
- Method: GET
- Path: /api/busca-avancada

## About the plan

- Plan: Gratuito
- Who can get it: anyone who registers

## The 7 fields the plan's answer can hold

total results, CNPJ, legal name, state, municipality, registration status, share capital

## CNPJ Aberto's plans (3)

- [CNPJ Aberto, free](https://datacircle.dev/company-discovery-apis/cnpj-aberto/free/llms.txt): $0.00 per 1,000, 8% complete, 1 month
- [CNPJ Aberto, R$47 monthly, Pro, GET /api/busca-avancada](https://datacircle.dev/company-discovery-apis/cnpj-aberto/r-47-monthly-pro-get-api-busca-avancada/llms.txt): $0.0037 per 1,000, 8% complete, 1 month
- [CNPJ Aberto, R$449 yearly, Pro (anual), GET /api/busca-avancada](https://datacircle.dev/company-discovery-apis/cnpj-aberto/r-449-yearly-pro-anual-get-api-busca-avancada/llms.txt): $0.0029 per 1,000, 8% complete, 1 month

## CNPJ Aberto's calls for this API (3)

- `GET /api/busca-avancada`: [CNPJ Aberto, free](https://datacircle.dev/company-discovery-apis/cnpj-aberto/free/llms.txt)
- `GET /api/empresas-cidade`: [CNPJ Aberto, R$47 monthly, Pro, GET /api/empresas-cidade](https://datacircle.dev/company-discovery-apis/cnpj-aberto/r-47-monthly-pro-get-api-empresas-cidade/llms.txt)
- `GET /api/leads`: [CNPJ Aberto, R$47 monthly, Pro, GET /api/leads](https://datacircle.dev/company-discovery-apis/cnpj-aberto/r-47-monthly-pro-get-api-leads/llms.txt)

## CNPJ Aberto's APIs (5)

- [CNPJ Aberto: company discovery API pricing, 3 plans](https://datacircle.dev/company-discovery-apis/cnpj-aberto/free/llms.txt)
- [CNPJ Aberto: company enrichment API pricing, 3 plans](https://datacircle.dev/company-enrichment-apis/cnpj-aberto/free/llms.txt)
- [CNPJ Aberto: people search API pricing, 3 plans](https://datacircle.dev/people-search-apis/cnpj-aberto/free/llms.txt)
- [CNPJ Aberto: people enrichment API pricing, 2 plans](https://datacircle.dev/person-enrichment-apis/cnpj-aberto/r-47-monthly/llms.txt)
- [CNPJ Aberto: company hierarchy API pricing, 2 plans, GET /api/intelligence/grupo/{cnpj}](https://datacircle.dev/company-hierarchy-apis/cnpj-aberto/r-47-monthly-pro-get-api-intelligence-grupo-cnpj/llms.txt)
- [CNPJ Aberto: company hierarchy API pricing, 2 plans, GET /api/controle/{cnpj}](https://datacircle.dev/company-hierarchy-apis/cnpj-aberto/r-47-monthly-pro-get-api-controle-cnpj/llms.txt)

## CNPJ Aberto: company discovery API alternatives

- [DanskCVRAPI, DKK 299 monthly, Pro, GET /companies/search](https://datacircle.dev/company-discovery-apis/danskcvrapi/dkk-299-monthly-pro-get-companies-search/llms.txt): $0.003 per 1,000, 46% complete, 1 minute
- [Seltz, pay as you go, Pay-as-you-go, POST /v1/search, Search, base](https://datacircle.dev/company-discovery-apis/seltz/pay-as-you-go-pay-as-you-go-post-v1-search-search-base/llms.txt): $0.003 per 1,000, 38% complete, 1 month
- [ReefAPI, $1,200 yearly, Enterprise yearly, POST /google-maps/v1/place/nearby](https://datacircle.dev/company-discovery-apis/reefapi/1200-yearly-enterprise-yearly-post-google-maps-v1-place-nearby/llms.txt): $0.0033 per 1,000, 23% complete, live
- [Firmbase, €79 monthly, Business, GET /v1/autocomplete](https://datacircle.dev/company-discovery-apis/firmbase/79-monthly-business-get-v1-autocomplete/llms.txt): $0.0036 per 1,000, 15% complete, 24 hours

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-08.

- https://cnpjaberto.com.br/api-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://cnpjaberto.com.br/faq?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://cnpjaberto.com.br/planos?billing=monthly&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://cnpjaberto.com.br/solucoes/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://cnpjaberto.com.br/termos?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing