# Cobalt Intelligence, free lookups, POST /fullVerification: Business verification API

> Check a business name with all the states. That's right all 50 states + DC!

Cobalt Intelligence's business verification API on its Free lookups plan. It costs $0.00 per 1,000 companies. It returns 5 of the 11 key fields we check: Registered name, Entity number, Entity type, Status, Registered agent.
We rank 31 plans by price. [OpenSOSData's $500 monthly plan](https://datacircle.dev/business-verification-apis/opensosdata/500-monthly-scale-cached-post-v1-lookup/llms.txt) is the cheapest paid plan per 1,000 companies: $5.00.

- This page: https://datacircle.dev/business-verification-apis/cobalt-intelligence/free-lookups-post-fullverification
- Get it: https://cobaltintelligence.com/pricing
- Request: `POST https://apigateway.cobaltintelligence.com/fullVerification`
- API key: with the plan, on https://cobaltintelligence.com/pricing
- Its API docs: https://documentation.cobaltintelligence.com/#b98e9b92-bebf-404c-8ab2-292c1f281c84
- Sold by: Cobalt Intelligence (https://cobaltintelligence.com)
- Checked: 2026-10-30

## In the answer

- Completeness: 45%
- Registered name: ✓
- Entity number: ✓
- Entity type: ✓
- Status: ✓
- Registered agent: ✓

## Price

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

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Check a business name with all the states. That's right all 50 states + DC!

## Data

- Freshness: live
- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 20 credits

## Rate limit

- Batch: 1

## Speed

- Answer: by polling or webhook

## The call

- You send: action "initVerification", one of businessName, firstName or lastName. Optional: businessStreetAddress, businessCity, businessState, businessZip, ownerStreetAddress, ownerCity, ownerState, ownerZip, callbackUrl
- Method: POST
- Path: /fullVerification

## About the plan

- Plan: Free lookups
- Who can get it: anyone

## The 33 fields the plan's answer can hold

entity name, filing date, normalized filing date, state of formation, state of registration, status, normalized status, entity type, entity ID, registered agent name, registered agent street address, registered agent city, registered agent state, registered agent ZIP code, registered agent is commercial, registered agent resigned, physical address street, physical address city, physical address state, physical address ZIP code, mailing address street, mailing address city, mailing address state, mailing address ZIP code, documents, change history, person name match, confidence level, AI confidence level, screenshot URL, possible alternatives, record created at, record updated at

## Cobalt Intelligence's plans (3)

- [Cobalt Intelligence, free lookups, POST /fullVerification](https://datacircle.dev/business-verification-apis/cobalt-intelligence/free-lookups-post-fullverification/llms.txt): $0.00 per 1,000, 45% complete, live
- [Cobalt Intelligence, contact us, Committed volume tiers, POST /fullVerification](https://datacircle.dev/business-verification-apis/cobalt-intelligence/contact-us-committed-volume-tiers-post-fullverification/llms.txt): 45% complete, live
- [Cobalt Intelligence, contact us, Pay-as-you-go, POST /fullVerification](https://datacircle.dev/business-verification-apis/cobalt-intelligence/contact-us-pay-as-you-go-post-fullverification/llms.txt): 45% complete, live

## Cobalt Intelligence's calls (2)

- `POST /fullVerification`: [Cobalt Intelligence, free lookups, POST /fullVerification](https://datacircle.dev/business-verification-apis/cobalt-intelligence/free-lookups-post-fullverification/llms.txt)
- `GET /v1/search`: [Cobalt Intelligence, free lookups, GET /v1/search](https://datacircle.dev/business-verification-apis/cobalt-intelligence/free-lookups-get-v1-search/llms.txt)

## Cobalt Intelligence's APIs (1)

- [Cobalt Intelligence: business verification API pricing, 3 plans, POST /fullVerification](https://datacircle.dev/business-verification-apis/cobalt-intelligence/free-lookups-post-fullverification/llms.txt)

## Cobalt Intelligence: business verification API alternatives

- [OpenSOSData, free, POST /v1/lookup](https://datacircle.dev/business-verification-apis/opensosdata/free-post-v1-lookup/llms.txt): $0.00 per 1,000, 100% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-30.

- https://cobaltintelligence.com
- https://cobaltintelligence.com/pricing
- https://documentation.cobaltintelligence.com/#b98e9b92-bebf-404c-8ab2-292c1f281c84
- https://documentation.cobaltintelligence.com/#c063613a-1761-4773-ae22-377345b13013