# Autobound, free, POST /v1/companies/search: Company discovery API

> Discover distinct companies that have one or more signals matching the filter, sorted by most-recent signal.

Autobound's company discovery API on its Free plan. It costs $0.00 per 1,000 companies. It returns 7 of the 13 key fields we check: Description, Industry, Type and status, Employees, Social profiles, Headquarters, Revenue and budgets.
We rank 533 plans by price. [Deepline's top-up](https://datacircle.dev/company-discovery-apis/deepline/top-up/llms.txt) costs the least per 1,000 companies. Deepline's company discovery API costs nothing beyond the plan price.
[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 [Skrapp](https://datacircle.dev/company-discovery-apis/skrapp/349-monthly/llms.txt) are the best company discovery API providers in our benchmark.

- This page: https://datacircle.dev/company-discovery-apis/autobound/free-post-v1-companies-search
- [Best company discovery API in 2026](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://www.autobound.ai/pricing
- Request: `POST https://signals.autobound.ai/v1/companies/search`
- API key: with the plan, on https://www.autobound.ai/pricing
- Its API docs: https://autobound-api.readme.io/reference/searchcompanies
- Sold by: Autobound (https://www.autobound.ai)
- Checked: 2026-10-23

## In the answer

- Completeness: 54%
- Description: ✓
- Industry: ✓
- Type and status: ✓
- Employees: ✓
- Social profiles: ✓
- Headquarters: ✓
- Revenue and budgets: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Most per search: 10,100
- Also pays for: from the same budget: POST /v1/companies/enrich · POST /v1/contacts/enrich · POST /v1/contacts/search · POST /v1/buyer-intent/companies · POST /v1/buyer-intent/contacts · POST /v1/buyer-intent/export

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Discover distinct companies that have one or more signals matching the filter, sorted by most-recent signal.

## Data

- Freshness: 1 month
- Keep data: license to access and use the Services solely for Customer’s internal business purposes during the term of this Agreement [...] Customer shall retain a perpetual, non-exclusive license to use, copy, and distribute any Reports generated through the Services prior to the date of termination or expiration, solely for Customer’s internal business purposes
- Use data: Company hereby grants Customer a non-exclusive, nontransferable, revocable license to access and use the Services solely for Customer’s internal business purposes during the term of this Agreement. [...] Customer shall not, and shall not permit any third party to: Reverse engineer, decompile, disassemble, or otherwise attempt to derive the source code, algorithms, or underlying structure of the Services or any component thereof, Modify, adapt, translate, or create derivative works based upon the Services, Resell, sublicense, lease, rent, loan, distribute, or otherwise make the Services available to any third party, except as expressly authorized in writing by Company, Remove, alter, or obscure any proprietary notices, labels, or markings on or in the Services, Use the Services in a manner that could damage, disable, overburden, or impair Company’s servers, networks, or infrastructure.

## Plan

- Pay: $0
- You get: 1,000 credits
- Enough for: 500 results, once

## Rate limit

- Per second: 5

## Speed

- Answer: in the call

## The call

- You send: signal_types. Optional: signal_subtype, signal_subtypes, detected_after, detected_before, limit (1 to 100), offset, signals_per_entity, company_domains, company_domain, industries, employee_count_min, employee_count_max, revenue_min, revenue_max, content_filters.keywords, content_filters.tech_mentioned, content_filters.competitors_mentioned, content_filters.pain_points, content_filters.initiatives
- Method: POST
- Path: /v1/companies/search

## About the plan

- Plan: Free
- Who can get it: anyone who signs up, no credit card required

## The 31 fields the plan's answer can hold

ID, name, domain, LinkedIn URL, description, founded year, industries, industry confidence, is B2B, is B2C, employee count minimum, employee count maximum, employee count confidence, employees on LinkedIn, revenue, revenue confidence, headquarters city, headquarters state, headquarters country, signal count, most recent signal at, offset, limit, has more, hint, notice, warnings, filters applied, suggestion, data freshness, freshness suggestion

## Autobound's plans (10)

- [Autobound, free, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/free-post-v1-companies-search/llms.txt): $0.00 per 1,000, 54% complete, 1 month
- [Autobound, $19 pack, Starter, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/19-pack-starter-post-v1-companies-search/llms.txt): $20.00 per 1,000, 54% complete, 1 month
- [Autobound, $49 pack, Growth, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/49-pack-growth-post-v1-companies-search/llms.txt): $18.002 per 1,000, 54% complete, 1 month
- [Autobound, $149 pack, Scale, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/149-pack-scale-post-v1-companies-search/llms.txt): $15.00 per 1,000, 54% complete, 1 month
- [Autobound, $499 pack, Pro, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/499-pack-pro-post-v1-companies-search/llms.txt): $12.00 per 1,000, 54% complete, 1 month
- [Autobound, $1,299 pack, Business, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/1299-pack-business-post-v1-companies-search/llms.txt): $9.00 per 1,000, 54% complete, 1 month
- [Autobound, $4,999 pack, Enterprise, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/4999-pack-enterprise-post-v1-companies-search/llms.txt): $8.00 per 1,000, 54% complete, 1 month
- [Autobound, $10,000 pack, Enterprise credit pack, 2.6M credits, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/10000-pack-enterprise-credit-pack-2-6m-credits-post-v1-companies-search/llms.txt): $7.692 per 1,000, 54% complete, 1 month
- [Autobound, $40,000 pack, Enterprise credit pack, 11.5M credits, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/40000-pack-enterprise-credit-pack-11-5m-credits-post-v1-companies-search/llms.txt): $6.957 per 1,000, 54% complete, 1 month
- [Autobound, contact us, Custom volume, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/contact-us-custom-volume-post-v1-companies-search/llms.txt): 54% complete, 1 month

## Autobound's calls for this API (2)

- `POST /v1/buyer-intent/companies`: [Autobound, free, POST /v1/buyer-intent/companies](https://datacircle.dev/company-discovery-apis/autobound/free/llms.txt)
- `POST /v1/companies/search`: [Autobound, free, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/free-post-v1-companies-search/llms.txt)

## Autobound's APIs (9)

- [Autobound: company enrichment API pricing, 10 plans](https://datacircle.dev/company-enrichment-apis/autobound/free/llms.txt)
- [Autobound: company funding API pricing, 10 plans](https://datacircle.dev/company-funding-apis/autobound/free/llms.txt)
- [Autobound: people enrichment API pricing, 10 plans](https://datacircle.dev/person-enrichment-apis/autobound/free/llms.txt)
- [Autobound: LinkedIn company post API pricing, 10 plans](https://datacircle.dev/linkedin-company-post-apis/autobound/free/llms.txt)
- [Autobound: LinkedIn profile comment API pricing, 10 plans](https://datacircle.dev/linkedin-person-comment-apis/autobound/free/llms.txt)
- [Autobound: LinkedIn profile post API pricing, 10 plans](https://datacircle.dev/linkedin-person-post-apis/autobound/free/llms.txt)
- [Autobound: leadership change API pricing, 10 plans, POST /v1/companies/enrich](https://datacircle.dev/leadership-change-apis/autobound/free-post-v1-companies-enrich/llms.txt)
- [Autobound: leadership change API pricing, 10 plans, POST /v1/contacts/search](https://datacircle.dev/leadership-change-apis/autobound/free-post-v1-contacts-search/llms.txt)
- [Autobound: company discovery API pricing, 10 plans, POST /v1/companies/search](https://datacircle.dev/company-discovery-apis/autobound/free-post-v1-companies-search/llms.txt)
- [Autobound: people search API pricing, 10 plans, POST /v1/buyer-intent/contacts](https://datacircle.dev/people-search-apis/autobound/free-post-v1-buyer-intent-contacts/llms.txt)
- [Autobound: people search API pricing, 10 plans, POST /v1/contacts/search](https://datacircle.dev/people-search-apis/autobound/free-post-v1-contacts-search/llms.txt)

## Autobound: company discovery API alternatives

- [Findymail, $49 monthly, Basic, POST /api/intellimatch/search, Search leads](https://datacircle.dev/company-discovery-apis/findymail/49-monthly/llms.txt): $4.90 per 1,000, 31% complete, live
- [Lusha, $49.90 monthly, Starter, POST /v3/companies/prospecting, Prospecting Companies](https://datacircle.dev/company-discovery-apis/lusha/49-90-monthly-starter-post-v3-companies-prospecting-prospecting-companies/llms.txt): $4.99 per 1,000, 31% complete, 1 week
- [Hirebase, $950.40 yearly](https://datacircle.dev/company-discovery-apis/hirebase/950-40-yearly/llms.txt): $7.92 per 1,000, 69% complete, 1 hour
- [PredictLeads, pay as you go, 100,001-500,000 API Calls, GET /discover/extended_companies](https://datacircle.dev/company-discovery-apis/predictleads/pay-as-you-go-100001-500000-api-calls-get-discover-extended-companies/llms.txt): $8.00 per 1,000, 85% complete, 2 weeks

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-23.

- https://autobound-api.readme.io/changelog/richer-company-and-contact-data-on-enrich-plus-live-linkedin-posts
- https://autobound-api.readme.io/docs/company-data
- https://autobound-api.readme.io/docs/credits
- https://autobound-api.readme.io/reference/searchbuyerintentcompanies
- https://autobound-api.readme.io/reference/searchcompanies
- https://www.autobound.ai/apis/company-enrichment-api
- https://www.autobound.ai/apis/contact-enrichment-api
- https://www.autobound.ai/master-services-agreement
- https://www.autobound.ai/pricing