# CZ Agents, free: Business verification API

> Search companies

CZ Agents's business verification API on its Free plan. It costs $0.00 per 1,000 companies. It returns 1 of the 11 key fields we check: Registered name.
You get up to 216,000 calls a month.
Half of the 646 plans we rank by price cost $7.895 per 1,000 companies or less. This plan and 52 others tie for the lowest price per 1,000 companies of the 646 plans.
[INSEE](https://datacircle.dev/business-verification-apis/insee/free/llms.txt), [CZ Agents](https://datacircle.dev/business-verification-apis/cz-agents/free/llms.txt) and [ARES](https://datacircle.dev/business-verification-apis/ares/free/llms.txt) are the best business verification API providers in our benchmark.

- This page: https://datacircle.dev/business-verification-apis/cz-agents/free
- [Best business verification API in 2026: pricing compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://cz-agents.dev/pricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Request: `GET https://ares.cz-agents.dev/v1/companies`
- API key: not needed
- Its API docs: https://cz-agents.dev/docs/api.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Sold by: CZ Agents (https://cz-agents.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-11-01

## In the answer

- Completeness: 9%
- Registered name: ✓

## Score

- Overall score: 87.3
- Price score: 100
- Data score: 79
- Cost to get started score: 100
- Bundle score: 86
- Performance score: 57

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: Screen IČO vs EU+OFAC: 300 requests/hour · Insolvency status: 300 requests/hour · Full DD report: 60 requests/hour · from the same budget: Company by IČO · Transparent bank accounts · Statutory body

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Search companies

## Data

- Freshness: stored
- Countries: Czech Republic
- Keep data: no limit
- Use data: You agree not to use the service for: Bulk scraping that bypasses rate limits or quota allocations. Re-publishing the cached datasets (sanctions snapshots, ISIR event feed) as your own product. Identification or tracking of individuals beyond the public-registry purposes for which the data was originally published. Any unlawful purpose under Czech law or the laws of your jurisdiction.

## Plan

- Pay: €0
- Enough for: 216,000 calls a month

## Rate limit

- Per second: 0.083
- Batch: 1

## Speed

- Answer: in the call
- Median: 0.18 s

## The call

- You send: q
- Method: GET
- Path: /v1/companies

## About the plan

- Plan: Free
- Who can get it: anyone

## The 4 fields the plan's answer can hold

IČO, registered name, fetched at, source register

## CZ Agents's plans (1)

- [CZ Agents, free](https://datacircle.dev/business-verification-apis/cz-agents/free/llms.txt): $0.00 per 1,000, 9% complete, stored

## CZ Agents's calls for this API (1)

- `GET /v1/companies`: [CZ Agents, free](https://datacircle.dev/business-verification-apis/cz-agents/free/llms.txt)

## CZ Agents's APIs (2)

- [CZ Agents: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/cz-agents/free/llms.txt)
- [CZ Agents: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/cz-agents/free/llms.txt)

## CZ Agents: business verification API alternatives

- [OpenSOSData, free cached, POST /v1/lookup](https://datacircle.dev/business-verification-apis/opensosdata/free-cached-post-v1-lookup/llms.txt): $0.00 per 1,000, 100% complete, stored
- [GLEIF, free](https://datacircle.dev/business-verification-apis/gleif/free/llms.txt): $0.00 per 1,000, 64% complete, stored
- [OneShot, free](https://datacircle.dev/business-verification-apis/oneshot/free/llms.txt): $0.00 per 1,000, 55% complete, stored
- [GovFiles, free](https://datacircle.dev/business-verification-apis/govfiles/free/llms.txt): $0.00 per 1,000, 91% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-01.

- https://cz-agents.dev?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://cz-agents.dev/docs/api.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://cz-agents.dev/docs/faq.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://cz-agents.dev/docs/limits.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://cz-agents.dev/docs/tiers.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://cz-agents.dev/pricing.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://cz-agents.dev/pricing.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://cz-agents.dev/terms.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing