# Nock, free: Company discovery API

> Encontra empresas por setor, palavras-chave, tamanho, localização e businessModel (b2b ou b2c), no Brasil, converte atividades conhecidas em CNAEs e aceita filtros cadastrais, societários e de contato.

Nock's Teste grátis plan for the company discovery API costs $0.00 per 1,000 companies. We check each provider's docs for 13 fields. Nock's docs list 11: Description, Industry, Type and status, Images, Technologies, Employees, Social profiles, Headquarters, Locations, Revenue and budgets, Phones.
We haven't run Nock 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/nock/free
- [Company discovery API: the best of 100+ providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://usenock.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `POST https://api.usenock.com/v1/api/companies/search`
- API key: with the plan, on https://usenock.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Its API docs: https://usenock.com/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Sold by: Nock (https://usenock.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 85%
- Description: ✓
- Industry: ✓
- Type and status: ✓
- Images: ✓
- Technologies: ✓
- Employees: ✓
- Social profiles: ✓
- Headquarters: ✓
- Locations: ✓
- Revenue and budgets: ✓
- Phones: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: result
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Most per search: 20
- Also pays for: from the same budget: Buscar pessoas · Enriquecer uma pessoa ou empresa · Identificar empresa e pessoa de um cadastro · Checar quais números têm WhatsApp · Descobrir de quem é um celular · Achar quem decide numa pequena empresa

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Encontra empresas por setor, palavras-chave, tamanho, localização e businessModel (b2b ou b2c), no Brasil, converte atividades conhecidas em CNAEs e aceita filtros cadastrais, societários e de contato.

## Data

- Keep data: no limit
- Use data: 3: Você pode utilizar a Nock para fins profissionais legítimos, inclusive pesquisa comercial, enriquecimento de dados e prospecção. Você é responsável por definir a base legal e observar as regras aplicáveis às suas abordagens, mensagens, bases de contatos e contas conectadas, incluindo a LGPD e os termos do Google, Microsoft, LinkedIn, Slack, HubSpot, Salesforce e de qualquer cliente MCP que você use. Você não pode utilizar a plataforma para: violar leis, direitos de terceiros ou obrigações contratuais, enviar spam, fraude, assédio, abuso ou comunicação ilegal, tomar decisões proibidas ou discriminatórias com dados pessoais, buscar ou tratar categorias sensíveis sem fundamento adequado, contornar limites, segurança ou mecanismos de cobrança e consumo, fazer scraping, revender ou explorar a plataforma ou dados de provedores sem autorização, usar a Nock como agência ou prestador de serviço para prospectar, enriquecer ou abordar em nome de terceiros, ou revender acesso, resultados ou dados, contas, workspaces e créditos servem só à sua própria organização, usar canais conectados em desacordo com as regras do próprio provedor, inclusive LinkedIn, Gmail, Slack ou políticas de uso de CRMs.

## Plan

- Pay: R$0
- You get: 500 credits
- Enough for: 250 results, once
- Expires: 7 days

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: name, industry, keywords, sizes, location, cnaes, registrationStatuses, establishmentTypes, fiscalSizes, neighborhoods, phoneType, branchesMin, statesMin, headcountGrowthMin, headcountGrowthMonths, sectorGrowth, microRegions, mesoRegions, immediateRegions, intermediateRegions, radius.cep, radius.latitude, radius.longitude, radius.km, activityLevels, productKeywords, phoneScoreMin, emailValidated, sellsToGovernment, governmentSalesMin, schoolNetworks, schoolStages, schoolEnrollmentMin, schoolEnrollmentMax, revenueMin, revenueMax, employeesMin, employeesMax, capitalMin, capitalMax, legalNatureCodes, partnerName, partnerDocument, simpleOption, currentRegimes, openingDateMin, openingDateMax, hasPhone, hasEmail, hasWebsite, businessModel, state, city, limit, companyOrder
- Method: POST
- Path: /api/companies/search

## About the plan

- Plan: Teste grátis
- Who can get it: anyone with a new account, no card needed (500 free credits for 7 days)

## The 77 fields the plan's answer can hold

name, trade name, legal name, domain, industry, size, location, LinkedIn URL, founded year, description, logo URL, employee count, revenue, technologies, CNPJ, registration status, registration status date, establishment type, fiscal size, capital, primary CNAE, primary CNAE description, secondary CNAEs, secondary CNAE descriptions, matched CNAEs, municipality code, legal nature code, legal nature, opening date, simple option, MEI option, current tax regime, current tax regime key, partners, partner count, tax regimes, SUFRAMA registrations, activity level, activity signals, product keyword match, phone score, phone score signals, email validated, sector growth, sector growth net jobs 12 months, sector growth period, sector growth scope, estimated employees, estimated employees value, estimated employees source, estimated revenue, estimated revenue value, estimated revenue source, government contracts, government sales total, government agencies, government latest contract, government sales period, school INEP code, school name, school network, school stages, school enrollment, school count, school census year, responsible partner name, responsible partner qualification, responsible partner reason, responsible partner unambiguous, address, ZIP code, phone, email, source, match mode, ignored filters, reason

## Nock's plans (4)

- [Nock, free](https://datacircle.dev/company-discovery-apis/nock/free/llms.txt): $0.00 per 1,000, 85% complete
- [Nock, R$299 monthly](https://datacircle.dev/company-discovery-apis/nock/r-299-monthly/llms.txt): $47.06 per 1,000, 85% complete
- [Nock, R$799 monthly](https://datacircle.dev/company-discovery-apis/nock/r-799-monthly/llms.txt): $39.299 per 1,000, 85% complete
- [Nock, contact us](https://datacircle.dev/company-discovery-apis/nock/contact-us/llms.txt): 85% complete

## Nock's calls for this API (1)

- `POST /api/companies/search`: [Nock, free](https://datacircle.dev/company-discovery-apis/nock/free/llms.txt)

## Nock's APIs (7)

- [Nock: company discovery API pricing, 4 plans](https://datacircle.dev/company-discovery-apis/nock/free/llms.txt)
- [Nock: company hierarchy API pricing, 4 plans](https://datacircle.dev/company-hierarchy-apis/nock/free/llms.txt)
- [Nock: email finder API pricing, 4 plans](https://datacircle.dev/find-email-apis/nock/free/llms.txt)
- [Nock: phone finder API pricing, 4 plans](https://datacircle.dev/find-phone-apis/nock/free/llms.txt)
- [Nock: people search API pricing, 4 plans](https://datacircle.dev/people-search-apis/nock/free/llms.txt)
- [Nock: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/nock/free/llms.txt)
- [Nock: company enrichment API pricing, 4 plans, POST /api/companies/cnpj/batch](https://datacircle.dev/company-enrichment-apis/nock/free-teste-gratis-post-api-companies-cnpj-batch/llms.txt)
- [Nock: company enrichment API pricing, 4 plans, POST /api/companies/domain/batch](https://datacircle.dev/company-enrichment-apis/nock/free-teste-gratis-post-api-companies-domain-batch/llms.txt)
- [Nock: company enrichment API pricing, 4 plans, GET /api/companies/cnpj/{cnpj}](https://datacircle.dev/company-enrichment-apis/nock/free-teste-gratis-get-api-companies-cnpj-cnpj/llms.txt)
- [Nock: company enrichment API pricing, 4 plans, POST /api/enrich/identify](https://datacircle.dev/company-enrichment-apis/nock/free-teste-gratis-post-api-enrich-identify/llms.txt)

## Nock: company discovery API alternatives

- [Instantly, $147 monthly, Supersonic credits 2, POST /api/v2/supersearch-enrichment/company-lists, Create a company list build, TheirStack](https://datacircle.dev/company-discovery-apis/instantly/147-monthly-supersonic-credits-2-post-api-v2-supersearch-enrichment-company-lists-create-a-company-list-build-theirstack/llms.txt): $39.20 per 1,000, 62% complete, stored
- [Pipecorn, $1,890 yearly, Grow, 12,000 credits a month, billed yearly, POST /intents/accounts/stack](https://datacircle.dev/company-discovery-apis/pipecorn/1890-yearly-grow-12000-credits-a-month-billed-yearly-post-intents-accounts-stack/llms.txt): $39.375 per 1,000, 38% complete, stored
- [PredictLeads, pay as you go, 5,001-10,000 API Calls, GET /discover/extended_companies](https://datacircle.dev/company-discovery-apis/predictleads/pay-as-you-go-5001-10000-api-calls-get-discover-extended-companies/llms.txt): $40.00 per 1,000, 85% complete, 2 weeks
- [The Org, top-up, Additional credits on Basic](https://datacircle.dev/company-discovery-apis/the-org/top-up-additional-credits-on-basic/llms.txt): $40.00 per 1,000, 54% complete

## 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://api.usenock.com/v1/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/developers.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/docs/api.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/guias/api-e-mcp-de-prospeccao?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/pricing.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://usenock.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing