# SOSfinder, free: Company enrichment API

> Set it to the state’s registry-ID field to look one record up directly [...] An ID lookup returns exactly one record.

SOSfinder's company enrichment API on its Free plan. It costs $0.00 per 1,000 companies. It returns 4 of the 13 key fields we check: Industry, Type and status, Headquarters, Revenue and budgets.
In [our company enrichment API benchmark](https://datacircle.dev/best-company-enrichment-api.txt), SOSfinder's best plan scores 37.7 out of 100.
This plan is free. We rank 1,451 plans for company enrichment APIs by price. Half the plans cost $9.00 per 1,000 companies or less.
[Extruct's $49 monthly plan](https://datacircle.dev/company-enrichment-apis/extruct/49-monthly/llms.txt) is the cheapest paid plan per 1,000 companies. Extruct's company enrichment API costs nothing beyond the plan price.
[CNPJ API's R$99 monthly plan (/bulk-cnpj)](https://datacircle.dev/company-enrichment-apis/cnpj-api/r-99-monthly-pro-post-bulk-cnpj/llms.txt) covers any number of companies in Brazil only. CNPJ API's R$99 monthly plan costs less up front than Extruct's $49 monthly plan.
[GLEIF](https://datacircle.dev/company-enrichment-apis/gleif/free/llms.txt), [SEC EDGAR](https://datacircle.dev/company-enrichment-apis/sec-edgar/free/llms.txt) and [GetProspect](https://datacircle.dev/company-enrichment-apis/getprospect/49-monthly-starter-post-v2-companies-enrich/llms.txt) are the best company enrichment API providers in the Datacircle benchmark for companies in any country.

- This page: https://datacircle.dev/company-enrichment-apis/sosfinder/free
- [Company enrichment API: 130+ providers compared](https://datacircle.dev/best-company-enrichment-api.txt)
- Get it: https://www.sosfinder.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- Request: `GET https://api.sosfinder.com/search`
- API key: with the plan, on https://www.sosfinder.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- Its API docs: https://www.sosfinder.com/docs/entity-search?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- Sold by: SOSfinder (https://www.sosfinder.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing)
- Checked: 2026-11-03

## In the answer

- Completeness: 31%
- Industry: ✓
- Type and status: ✓
- Headquarters: ✓
- Revenue and budgets: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: /v1/monitors: 5 entities, weekly checks · from the same budget: GET /document

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Set it to the state’s registry-ID field to look one record up directly [...] An ID lookup returns exactly one record.

## Data

- Freshness: stored
- Countries: United States
- Keep data: You may cache and store responses within your own application for your own use.
- Use data: You may use the Service for any lawful business purpose — verifying businesses during onboarding, enriching CRM or lead records, underwriting and diligence, monitoring the standing of entities you do business with, and building products on top of the API. What you may not do: Resell, redistribute, or sublicense raw API responses as a standalone dataset or a competing lookup service, Share, sell, or pool your API key across separate businesses or customers, Circumvent, interfere with, or misreport usage metering, rate limits, or plan quotas, Scrape our website, dashboard, or documentation, or access the Service by any means other than the documented API, Probe, attack, or attempt to reverse engineer our systems, or use the Service in a way that degrades it for others, Use the Service to harass, stalk, or profile individuals, or in any way that violates applicable law. [...] You may not use the Service, in whole or in part, to establish an individual's eligibility for credit, insurance, employment, housing, or any other purpose regulated by the FCRA.

## Plan

- Pay: $0
- You get: 50 credits a month
- Enough for: 50 calls a month
- Expires: at the start of each billing cycle

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 1.84 s

## The call

- You send: state, business_name, by one of "entityId", "documentNumber", "fileNumber", "filingNumber" or "controlNumber"
- Method: GET
- Path: /search

## About the plan

- Plan: Free
- Who can get it: anyone with an account, for a lawful business purpose

## The 44 fields the plan's answer can hold

match found, state, state name, searched ID, searched by, registered name, entity number, secondary entity number, previous names, status, status reason, sub-status, legal entity type, legal entity type description, good standing, AR standing, RA standing, revenue standing, other standing, formation date, effective date, dissolution date, revival date, jurisdiction, federal employer ID, NAICS code, NAICS description, registered agent name, registered agent address, registered agent city, registered agent state, registered agent ZIP code, service of process name, service of process address, officers, principal office address, mailing address, filings, filing history, annual reports, documents, registry record URL, detail page available, raw state record

## SOSfinder's plans (6)

- [SOSfinder, free](https://datacircle.dev/company-enrichment-apis/sosfinder/free/llms.txt): $0.00 per 1,000, 31% complete, stored
- [SOSfinder, top-up from $9](https://datacircle.dev/company-enrichment-apis/sosfinder/top-up-from-9/llms.txt): $90.00 per 1,000, 31% complete, stored
- [SOSfinder, $49 monthly](https://datacircle.dev/company-enrichment-apis/sosfinder/49-monthly/llms.txt): $49.00 per 1,000, 31% complete, stored
- [SOSfinder, $99 monthly](https://datacircle.dev/company-enrichment-apis/sosfinder/99-monthly/llms.txt): $39.60 per 1,000, 31% complete, stored
- [SOSfinder, $449 monthly](https://datacircle.dev/company-enrichment-apis/sosfinder/449-monthly/llms.txt): $29.933 per 1,000, 31% complete, stored
- [SOSfinder, contact us](https://datacircle.dev/company-enrichment-apis/sosfinder/contact-us/llms.txt): 31% complete, stored

## SOSfinder's calls (1)

- `GET /search`: [SOSfinder, free](https://datacircle.dev/company-enrichment-apis/sosfinder/free/llms.txt)

## SOSfinder's APIs (2)

- [SOSfinder: business verification API pricing, 6 plans](https://datacircle.dev/business-verification-apis/sosfinder/free/llms.txt)
- [SOSfinder: company enrichment API pricing, 6 plans](https://datacircle.dev/company-enrichment-apis/sosfinder/free/llms.txt)

## SOSfinder: company enrichment API alternatives

- [The Swarm, $299 monthly](https://datacircle.dev/company-enrichment-apis/the-swarm/299-monthly/llms.txt): $29.90 per 1,000, 77% complete, stored
- [Diffbot, $299 monthly, Startup, GET /kg/v3/enhance](https://datacircle.dev/company-enrichment-apis/diffbot/299-monthly-startup-get-kg-v3-enhance/llms.txt): $29.90 per 1,000, 92% complete, stored
- [Company URL Finder, $299 monthly, Scale, POST /services/domain_to_name](https://datacircle.dev/company-enrichment-apis/company-url-finder/299-monthly-scale-post-services-domain-to-name/llms.txt): $29.90 per 1,000, 0% complete, stored
- [DataLayer, $1,499 monthly, Scale, POST /v1/enrich/company/bulk](https://datacircle.dev/company-enrichment-apis/datalayer/1499-monthly-scale-post-v1-enrich-company-bulk/llms.txt): $29.98 per 1,000, 69% 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 2026-11-03.

- https://www.sosfinder.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://www.sosfinder.com/docs/api-credits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://www.sosfinder.com/docs/entity-search?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://www.sosfinder.com/docs/rate-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://www.sosfinder.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://www.sosfinder.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing
- https://www.sosfinder.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=company-enrichment-api-pricing