# Loopster, free: Company discovery API

> Companies with their industry, headcount, location and website, ready to filter by your ICP.

Loopster's Free trial plan for the company discovery API costs $0.00 per 1,000 companies. Loopster's docs list 3 of the 13 fields on our checklist: Industry, Employees, Locations.
You get up to 30,000 pages a month.
We haven't run Loopster through [our company discovery API benchmark](https://datacircle.dev/best-company-discovery-api.txt) yet.
This plan is free. We rank 966 plans for company discovery APIs by price. Half the plans cost $1.00 per 1,000 companies or less. [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.
[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/loopster/free
- [Company discovery API: the best of 80+ providers compared](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://loopster.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Request: `POST https://app.loopster.ai/api/v1/search`
- API key: with the plan, on https://loopster.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Its API docs: https://docs.loopster.ai/api-reference/v1/endpoints/search?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- Sold by: Loopster (https://loopster.ai?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 23%
- Industry: ✓
- Employees: ✓
- Locations: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: page of 50
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 88 other calls

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Companies with their industry, headcount, location and website, ready to filter by your ICP.

## Data

- Freshness: 1 day
- Keep data: no limit
- Use data: Subject to the Terms and any restrictions identified in the Services, we grant you a non-exclusive right to use Results for your internal business purposes. You may not sell, sublicense, or redistribute Results as a standalone product or use them to build a competing database or service. [...] You agree not to do, and not to permit anyone acting through your account to do, any of the following. use the Services in violation of applicable law, including data-protection, privacy, and electronic-marketing laws, resell, sublicense, or redistribute data obtained from Loopster or its data providers as a standalone dataset, or use the Services to build a competing database or product, upload, or use the Services to search for or enrich, special categories of personal data, health information, or data relating to children, use the Services or Results to make decisions producing legal or similarly significant effects concerning a person, including decisions about employment, credit, housing, insurance, education, or access to essential services, without all legally required safeguards and our prior written approval, use the Services to conduct unlawful surveillance, infer sensitive characteristics, identify anonymous individuals, facilitate doxxing or harassment, or discriminate against any person, interfere with, disrupt, or circumvent the Services or any usage limits, or compromise the security of any account, network, or system, including through phishing, malware, or denial-of-service attacks, misrepresent your identity, create fake profiles, or impersonate any person or organisation, use the Services to promote, coordinate, or execute any fraudulent or deceptive scheme, reverse-engineer, decompile, disassemble, or otherwise attempt to derive the source code, underlying algorithms, or data models of the Services, except to the extent expressly permitted by applicable law that cannot be waived by contract, use the Services to send spam or engage in abusive or misleading outreach, breach export-control or sanctions laws, or use the Services for the benefit of any person subject to sanctions, fail to honour, or attempt to circumvent, any opt-out, objection, or suppression request, or any suppression list made available through the Services.

## Plan

- Pay: $0
- Enough for: 30,000 pages a month
- Expires: 14 days

## Rate limit

- Per day: 50,000
- Per second: 5
- Concurrent: 4
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: entity "companies". Optional: filters, exclusions, limit, cursor, searchId
- Method: POST
- Path: /v1/search

## About the plan

- Plan: Free trial
- Who can get it: anyone, no credit card needed

## The 6 fields the plan's answer can hold

name, industry, headcount, location, website, total results

## Loopster's plans (4)

- [Loopster, free](https://datacircle.dev/company-discovery-apis/loopster/free/llms.txt): $0.00 per 1,000, 23% complete, 1 day
- [Loopster, $179 monthly](https://datacircle.dev/company-discovery-apis/loopster/179-monthly/llms.txt): $0.012 per 1,000, 23% complete, 1 day
- [Loopster, $449 monthly](https://datacircle.dev/company-discovery-apis/loopster/449-monthly/llms.txt): $0.006 per 1,000, 23% complete, 1 day
- [Loopster, $1,299 monthly](https://datacircle.dev/company-discovery-apis/loopster/1299-monthly/llms.txt): $0.0058 per 1,000, 23% complete, 1 day

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

- `POST /v1/search`: [Loopster, free](https://datacircle.dev/company-discovery-apis/loopster/free/llms.txt)

## Loopster's APIs (7)

- [Loopster: company discovery API pricing, 4 plans](https://datacircle.dev/company-discovery-apis/loopster/free/llms.txt)
- [Loopster: company enrichment API pricing, 4 plans](https://datacircle.dev/company-enrichment-apis/loopster/free/llms.txt)
- [Loopster: phone finder API pricing, 4 plans](https://datacircle.dev/find-phone-apis/loopster/free/llms.txt)
- [Loopster: people search API pricing, 4 plans](https://datacircle.dev/people-search-apis/loopster/free/llms.txt)
- [Loopster: people enrichment API pricing, 4 plans](https://datacircle.dev/person-enrichment-apis/loopster/free/llms.txt)
- [Loopster: reverse email lookup API pricing, 4 plans](https://datacircle.dev/reverse-email-lookup-apis/loopster/free/llms.txt)
- [Loopster: email finder API pricing, 4 plans, Find Personal Email](https://datacircle.dev/find-email-apis/loopster/free-trial-find-personal-email/llms.txt)
- [Loopster: email finder API pricing, 4 plans, POST /v1/capabilities/loopster-data-find-work-email/runs](https://datacircle.dev/find-email-apis/loopster/free-trial-post-v1-capabilities-loopster-data-find-work-email-runs/llms.txt)

## Loopster: company discovery API alternatives

- [ReefAPI, $300 yearly, Ultra yearly, POST /google-maps/v1/place/search](https://datacircle.dev/company-discovery-apis/reefapi/300-yearly-ultra-yearly-post-google-maps-v1-place-search/llms.txt): $0.005 per 1,000, 23% complete, live
- [cvr.dev, DKK 1,799 monthly](https://datacircle.dev/company-discovery-apis/cvr-dev/dkk-1799-monthly/llms.txt): $0.0054 per 1,000, 31% complete, 1 minute
- [DanskCVRAPI, DKK 99 monthly, Basis, GET /companies/search](https://datacircle.dev/company-discovery-apis/danskcvrapi/dkk-99-monthly-basis-get-companies-search/llms.txt): $0.006 per 1,000, 46% complete, 1 minute
- [Firmbase, €29 monthly, Pro, GET /v1/autocomplete](https://datacircle.dev/company-discovery-apis/firmbase/29-monthly-pro-get-v1-autocomplete/llms.txt): $0.0065 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 2026-11-07.

- https://docs.loopster.ai/api-reference/errors.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.loopster.ai/api-reference/rate-limits.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.loopster.ai/api-reference/v1/authentication.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.loopster.ai/api-reference/v1/endpoints/search-filters.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.loopster.ai/api-reference/v1/endpoints/search.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.loopster.ai/api-reference/v1/introduction.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.loopster.ai/guides/features/people-and-companies-search.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://docs.loopster.ai/integrations/data-enrichment/loopster-data?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://loopster.ai?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://loopster.ai/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing
- https://loopster.ai/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-discovery-api-pricing