# CompanyBook, free: Company discovery API

> Търсене на фирми с обичайните филтри чрез всеки валиден API ключ. Финансовите филтри на Pro, регистрационните филтри и финансовото сортиране изискват платен API ключ.

CompanyBook's company discovery API on its Free account plan. It costs $0.00 per 1,000 companies. CompanyBook's docs list 3 of the 13 key fields we check: Type and status, Revenue and budgets, Phones.
We haven't run CompanyBook through [our company discovery API benchmark](https://datacircle.dev/best-company-discovery-api.txt) yet.
This plan is free. We rank 881 plans for company discovery APIs by price. Half the plans cost $1.00 per 1,000 companies or less.
[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.
[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/companybook/free
- [Company discovery API: the best of 70+ providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://companybook.bg/subscribe?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `GET https://api.companybook.bg/api/v2/companies/search`
- API key: with the plan, on https://companybook.bg/subscribe?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Its API docs: https://companybook.bg/api-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Sold by: CompanyBook (https://companybook.bg?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 23%
- Type and status: ✓
- Revenue and budgets: ✓
- Phones: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Most per search: 1,000
- Also pays for: Get company financial data · from the same budget: Get a company by UIC · Get a person by identifier · Search people · Unified search

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Търсене на фирми с обичайните филтри чрез всеки валиден API ключ. Финансовите филтри на Pro, регистрационните филтри и финансовото сортиране изискват платен API ключ.

## Data

- Freshness: 1 day
- Countries: Bulgaria
- Keep data: no limit
- Use data: 4.1. Разрешено използване: Имате право да: [...] Използвате данните за лични или търговски цели, Използвате нашия API в съответствие с документацията, Разпространявате данните при спазване на лиценза CC BY 4.0 с признаване на източника. 4.2. Забранено използване: Забранява се да: [...] Извършвате автоматизирано събиране на данни (scraping) извън предоставения API, Претоварвате или нарушавате работата на инфраструктурата на Сайта, Заобикаляте установените технически ограничения и мерки за сигурност, Използвате данните по начин, който нарушава правата на трети лица [...] Забранява се използването на данните, предоставени чрез Сайта (включително контактни данни като имейл адреси и телефонни номера), за изпращане на нежелани търговски съобщения (спам), включително чрез имейл, SMS, телефонни обаждания или автоматизирани системи, в нарушение на приложимото законодателство. Забрана за високорисково обработване: Забранява се използването на данните за: Автоматизирано вземане на решения или профилиране с правни или съществени последици за физически лица, Обработване на специални категории лични данни, освен ако това е изрично разрешено от закона. 4.4. Търговско използване на данните: Имате право да използвате данните от TheCompanyBook в своите търговски продукти и услуги при следните условия: [...] Потребителите са длъжни да спазват условията на лиценз CC BY 4.0, включително изискването за посочване на първоначалния източник (Агенция по вписванията), когато това е приложимо. Забранено използване: Забранено е създаването на конкурентна услуга за търсене на фирми или физически лица, Забранено е предлагането на подобни услуги за база данни на дружества, Забранено е изграждането на продукти, които са съществено подобни на CompanyBook.bg. 5. Условия за използване на API: [...] Справедливо използване: Забранено е злоупотребата с API или опитите да се заобиколят установените лимити

## Plan

- Pay: $0
- You get: 100 requests a day
- Enough for: 100 pages a day

## Rate limit

- Per day: 100
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: nothing required. Optional: uic, name, district, status, legal_form, nkid, vat, has_contact_data, has_active_financial_data, revenue_range, registration_year_from, registration_year_to, registration_date_from, registration_date_to, sort_by, sort_dir, limit, offset
- Method: GET
- Path: /api/v2/companies/search

## About the plan

- Plan: Free account
- Who can get it: anyone with a free account (each account is licensed to one natural person)

## The 13 fields the plan's answer can hold

UIC, name, name transliteration, legal form, status, district, VAT registered, email presence, phone presence, website presence, active financial year, latest revenue range, total results

## CompanyBook's plans (4)

- [CompanyBook, free](https://datacircle.dev/company-discovery-apis/companybook/free/llms.txt): $0.00 per 1,000, 23% complete, 1 day
- [CompanyBook, €29.99 monthly](https://datacircle.dev/company-discovery-apis/companybook/29-99-monthly/llms.txt): $0.056 per 1,000, 23% complete, 1 day
- [CompanyBook, €249.99 yearly](https://datacircle.dev/company-discovery-apis/companybook/249-99-yearly/llms.txt): $0.013 per 1,000, 23% complete, 1 day
- [CompanyBook, contact us](https://datacircle.dev/company-discovery-apis/companybook/contact-us/llms.txt): 23% complete, 1 day

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

- `GET /api/v2/companies/search`: [CompanyBook, free](https://datacircle.dev/company-discovery-apis/companybook/free/llms.txt)

## CompanyBook's APIs (4)

- [CompanyBook: business verification API pricing, 4 plans](https://datacircle.dev/business-verification-apis/companybook/free/llms.txt)
- [CompanyBook: company discovery API pricing, 4 plans](https://datacircle.dev/company-discovery-apis/companybook/free/llms.txt)
- [CompanyBook: people search API pricing, 4 plans](https://datacircle.dev/people-search-apis/companybook/free/llms.txt)
- [CompanyBook: company enrichment API pricing, 4 plans, GET /api/companies/{uic}](https://datacircle.dev/company-enrichment-apis/companybook/free-account-get-api-companies-uic/llms.txt)
- [CompanyBook: company enrichment API pricing, 4 plans, GET /api/companies/{uic}/financial](https://datacircle.dev/company-enrichment-apis/companybook/free-account-get-api-companies-uic-financial/llms.txt)

## CompanyBook: company discovery API alternatives

- [PrismCrawl, $25 pack, Starter, POST /v1/google/maps/search](https://datacircle.dev/company-discovery-apis/prismcrawl/25-pack-starter-post-v1-google-maps-search/llms.txt): $0.013 per 1,000, 31% complete, live
- [EDINET DB, $39 monthly, Pro, GET /v1/search](https://datacircle.dev/company-discovery-apis/edinet-db/39-monthly-pro-get-v1-search/llms.txt): $0.013 per 1,000, 0% complete, 24 hours
- [ReefAPI, $200 monthly, Enterprise monthly, POST /indeed/v1/company/search](https://datacircle.dev/company-discovery-apis/reefapi/200-monthly-enterprise-monthly-post-indeed-v1-company-search/llms.txt): $0.013 per 1,000, 23% complete, live
- [overheid.io, €130 monthly](https://datacircle.dev/company-discovery-apis/overheid-io/130-monthly/llms.txt): $0.015 per 1,000, 31% complete, 1 day (street, house number, postal code, city, country, mailing address: 1 week)

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

- https://companybook.bg/api-docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://companybook.bg/features?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://companybook.bg/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://companybook.bg/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://companybook.bg/subscribe?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://companybook.bg/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing