# data.colorado.gov, free, Application token: Business verification API

> Colorado Business Entities (corporations, LLCs, etc.) registered with the Colorado Department of State (CDOS) since 1864.

data.colorado.gov's business verification API on its Application token 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, Registered agent, Principal address.
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/data-colorado-gov/free-application-token
- [Best business verification API in 2026: providers compared](https://datacircle.dev/best-business-verification-api.txt)
- Get it: https://dev.socrata.com/docs/app-tokens.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Request: `GET https://data.colorado.gov/resource/4ykn-tg5h.json`
- API key: with the plan, on https://dev.socrata.com/docs/app-tokens.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Its API docs: https://dev.socrata.com/foundry/data.colorado.gov/4ykn-tg5h?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- Sold by: data.colorado.gov (https://data.colorado.gov?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing)
- Checked: 2026-10-31

## In the answer

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

## Score

- Overall score: 74.0
- Price score: 100
- Accuracy score: 59
- Cost to get started score: 77
- 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: Colorado Business Entities (corporations, LLCs, etc.) registered with the Colorado Department of State (CDOS) since 1864.

## Data

- Freshness: 1 day
- Countries: United States
- Keep data: no limit
- Use data: "Applications using data supplied by this site must include the following disclaimers on their sites: 'The data made available here has been modified for use from its original source, which is the State of Colorado. THE STATE OF COLORADO MAKES NO REPRESENTATIONS OR WARRANTY AS TO THE COMPLETENESS, ACCURACY, TIMELINESS, OR CONTENT OF ANY DATA MADE AVAILABLE THROUGH THIS SITE. [...] It is understood that the information contained in the Web feed is being used at one's own risk.' [...] The State of Colorado reserves the right to modify and/or discontinue providing any or all of the data feeds at any time and to require the termination of any and all displaying, distributing or otherwise using any or all of the data for any reason including, without limitation, your violation of any provision of these Terms of Service."

## Plan

- Pay: $0
- Enough for: no limit

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 0.08 s

## The call

- You send: $where. Optional: $limit, $offset, $order
- Method: GET
- Path: /resource/4ykn-tg5h.json

## About the plan

- Plan: Application token
- Who can get it: anyone who registers an application token in a Socrata profile

## The 35 fields the plan's answer can hold

entity ID, entity name, entity type, status, formation date, jurisdiction, principal address, principal address line 2, principal city, principal state, principal ZIP code, principal country, mailing address, mailing address line 2, mailing city, mailing state, mailing ZIP code, mailing country, registered agent first name, registered agent middle name, registered agent last name, registered agent suffix, registered agent organization name, registered agent address, registered agent address line 2, registered agent city, registered agent state, registered agent ZIP code, registered agent country, registered agent mailing address, registered agent mailing address line 2, registered agent mailing city, registered agent mailing state, registered agent mailing ZIP code, registered agent mailing country

## data.colorado.gov's plans (2)

- [data.colorado.gov, free, Application token](https://datacircle.dev/business-verification-apis/data-colorado-gov/free-application-token/llms.txt): $0.00 per 1,000, 64% complete, 1 day
- [data.colorado.gov, free, No application token](https://datacircle.dev/business-verification-apis/data-colorado-gov/free-no-application-token/llms.txt): $0.00 per 1,000, 64% complete, 1 day

## data.colorado.gov's calls (1)

- `GET /resource/4ykn-tg5h.json`: [data.colorado.gov, free, Application token](https://datacircle.dev/business-verification-apis/data-colorado-gov/free-application-token/llms.txt)

## data.colorado.gov's APIs (3)

- [data.colorado.gov: business verification API pricing, 2 plans](https://datacircle.dev/business-verification-apis/data-colorado-gov/free-application-token/llms.txt)
- [data.colorado.gov: company discovery API pricing, 2 plans](https://datacircle.dev/company-discovery-apis/data-colorado-gov/free-application-token/llms.txt)
- [data.colorado.gov: company enrichment API pricing, 2 plans](https://datacircle.dev/company-enrichment-apis/data-colorado-gov/free-application-token/llms.txt)

## data.colorado.gov: 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
- [data.cityofchicago.org, free, Application token](https://datacircle.dev/business-verification-apis/data-cityofchicago-org/free-application-token/llms.txt): $0.00 per 1,000, 18% 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 2026-10-31.

- https://data.colorado.gov/Business/Business-Entities-in-Colorado/4ykn-tg5h?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://data.colorado.gov/api/views/4ykn-tg5h.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://data.colorado.gov/resource/4ykn-tg5h.json?$limit=2
- https://data.colorado.gov/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://dev.socrata.com/docs/app-tokens.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://dev.socrata.com/docs/endpoints.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://dev.socrata.com/docs/queries/limit.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://dev.socrata.com/docs/queries/where.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://dev.socrata.com/docs/response-codes.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing
- https://dev.socrata.com/foundry/data.colorado.gov/4ykn-tg5h?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=business-verification-api-pricing