# Companies Registration Office, free: Business verification API

> This dataset provides a structured and machine-readable register of all companies recorded by the Companies Registration Office (CRO) in Ireland. It includes a daily snapshot of company records, covering both currently registered companies and historical records of dissolved or closed entities.

Companies Registration Office's business verification API on its Free plan. It costs $0.00 per 1,000 companies. It returns 7 of the 11 key fields we check: Registered name, Entity number, Entity type, Status, Formation date, Principal address, Filings.
You get as many calls as you like.
Half of the 683 plans we rank by price cost $7.895 per 1,000 companies or less. This plan and 58 others tie for the lowest price per 1,000 companies of the 683 plans.
[Scoris's €19 pack](https://datacircle.dev/business-verification-apis/scoris/19-pack/llms.txt) covers any number of companies in 8 countries only. Scoris's €19 pack costs less up front than Scoris's €99 monthly plan.
[GovFiles](https://datacircle.dev/business-verification-apis/govfiles/top-up/llms.txt), [CompanyData.com](https://datacircle.dev/business-verification-apis/companydata-com/249-monthly/llms.txt) and [Didit](https://datacircle.dev/business-verification-apis/didit/top-up-from-50/llms.txt) are the best business verification API providers in our benchmark for companies in any country.

- This page: https://datacircle.dev/business-verification-apis/companies-registration-office/free
- [Best business verification API in 2026: providers compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://opendata.cro.ie/dataset/companies?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Request: `GET https://opendata.cro.ie/api/3/action/datastore_search`
- API key: not needed
- Its API docs: https://docs.ckan.org/en/2.9/maintaining/datastore.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#ckanext.datastore.logic.action.datastore_search
- Sold by: Companies Registration Office (https://cro.ie?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 64%
- Registered name: ✓
- Entity number: ✓
- Entity type: ✓
- Status: ✓
- Formation date: ✓
- Principal address: ✓
- Filings: ✓

## Score

- Overall score: 67.1
- Price score: 100
- Accuracy score: 35
- Cost to get started score: 100
- Bundle score: 0
- Performance score: 100

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: This dataset provides a structured and machine-readable register of all companies recorded by the Companies Registration Office (CRO) in Ireland. It includes a daily snapshot of company records, covering both currently registered companies and historical records of dissolved or closed entities.

## Data

- Freshness: 1 day
- Countries: Ireland
- Keep data: no limit
- Use data: Dataset licence "CC-BY-4.0": "available for bulk download and API access under the Creative Commons Attribution 4.0 (CC BY 4.0) licence, allowing unrestricted reuse with appropriate attribution". "Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application. Where the Information Provider does not provide a specific attribution statement users should include, or link to, this attribution statement: “Contains Irish Public Sector Data licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence”." "The Registrar reserves the right to amend or vary any information provided at any time." The licence: "If You Share the Licensed Material (including in modified form), You must: [...] indicate if You modified the Licensed Material [...], and indicate the Licensed Material is licensed under this Public License, and include the text of, or the URI or hyperlink to, this Public License." "You may not offer or impose any additional or different terms or conditions on, or apply any Effective Technological Measures to, the Licensed Material if doing so restricts exercise of the Licensed Rights by any recipient of the Licensed Material." "Nothing in this Public License constitutes or may be construed as permission to assert or imply that You are, or that Your use of the Licensed Material is, connected with, or sponsored, endorsed, or granted official status by, the Licensor [...]" "Patent and trademark rights are not licensed under this Public License."

## Plan

- Pay: $0
- Enough for: no limit

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 0.07 s

## The call

- You send: resource_id "3fef41bc-b8f4-4b10-8434-ce51c29b1bba". Optional: filters, q, distinct, plain, language, limit, offset, fields, sort, include_total, total_estimation_threshold, records_format
- Method: GET
- Path: /api/3/action/datastore_search

## About the plan

- Plan: Free
- Who can get it: anyone

## The 25 fields the plan's answer can hold

total results, total estimated, record ID, relevance rank, entity ID, entity name, name effective date, status code, status, status date, entity type code, entity type, entity type effective date, registration date, dissolution date, address line 1, address line 2, address line 3, address line 4, Eircode, last annual return date, next annual return date, last accounts date, NACE version 2 code, principal object code

## Companies Registration Office's plans (1)

- [Companies Registration Office, free](https://datacircle.dev/business-verification-apis/companies-registration-office/free/llms.txt): $0.00 per 1,000, 64% complete, 1 day

## Companies Registration Office's calls (1)

- `GET /api/3/action/datastore_search`: [Companies Registration Office, free](https://datacircle.dev/business-verification-apis/companies-registration-office/free/llms.txt)

## Companies Registration Office's APIs (3)

- [Companies Registration Office: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/companies-registration-office/free/llms.txt)
- [Companies Registration Office: company discovery API pricing, 1 plan](https://datacircle.dev/company-discovery-apis/companies-registration-office/free/llms.txt)
- [Companies Registration Office: company enrichment API pricing, 1 plan](https://datacircle.dev/company-enrichment-apis/companies-registration-office/free/llms.txt)

## Companies Registration Office: business verification API alternatives

- [INSEE, free](https://datacircle.dev/business-verification-apis/insee/free/llms.txt): $0.00 per 1,000, 45% complete, 24 hours
- [Brreg, free](https://datacircle.dev/business-verification-apis/brreg/free/llms.txt): $0.00 per 1,000, 64% complete, live
- [Annuaire des Entreprises, free](https://datacircle.dev/business-verification-apis/annuaire-des-entreprises/free/llms.txt): $0.00 per 1,000, 73% complete, 1 day
- [data.gov.lv, free](https://datacircle.dev/business-verification-apis/data-gov-lv/free/llms.txt): $0.00 per 1,000, 55% complete, 1 day

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-02.

- https://creativecommons.org/licenses/by/4.0/legalcode?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://docs.ckan.org/en/2.9/maintaining/datastore.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing#ckanext.datastore.logic.action.datastore_search
- https://opendata.cro.ie/about?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://opendata.cro.ie/api/3/action/datastore_search?resource_id=3fef41bc-b8f4-4b10-8434-ce51c29b1bba&q=ryanair&limit=2
- https://opendata.cro.ie/api/3/action/status_show?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://opendata.cro.ie/dataset/companies?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://opendata.cro.ie/dataset/companies/resource/3fef41bc-b8f4-4b10-8434-ce51c29b1bba?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing