# Filed, pay as you go: Business verification API

> Search corporate entities by state.

Filed's business verification API on its x402 Pay-Per-Request API plan. It costs $10.00 per 1,000 companies. It returns 3 of the 11 key fields we check: Registered name, Entity type, Status.
Half of the 31 plans we rank by price cost $19.90 per 1,000 companies or less. This plan is cheaper than 54% of the 31 plans.
[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/filed/pay-as-you-go
- Get it: https://filed.dev/api-x402
- Request: `GET https://filed.dev/api/x402/entity`
- API key: not needed
- Its API docs: https://filed.dev/api-x402
- Sold by: Filed (https://filed.dev)
- Checked: 2026-10-30

## In the answer

- Completeness: 27%
- Registered name: ✓
- Entity type: ✓
- Status: ✓

## Price

- $ per 1,000 companies: $10.00
- Per: call
- Billing: pay as you go

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Search corporate entities by state.

## Data

- Keep data: no limit
- Use data: You agree not to: Use the Service for any unlawful purpose. Attempt to circumvent rate limits or access controls. Redistribute bulk data obtained through the API without authorization. Interfere with or disrupt the Service infrastructure. Use automated tools to scrape the website (use the API instead). [...] Data provided through Filed.dev is sourced from public records maintained by state and federal agencies. [...] The Service should not be used as a sole basis for legal, financial, or business decisions.

## Plan

- Pay: per call

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: state. Optional: name, type, status, limit, offset
- Method: GET
- Path: /api/x402/entity

## About the plan

- Plan: x402 Pay-Per-Request API
- Who can get it: anyone

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

entity name, state, entity type, status

## Filed's plans (8)

- [Filed, pay as you go](https://datacircle.dev/business-verification-apis/filed/pay-as-you-go/llms.txt): $10.00 per 1,000, 27% complete
- [Filed, $49 monthly](https://datacircle.dev/business-verification-apis/filed/49-monthly/llms.txt): $49.00 per 1,000, 64% complete
- [Filed, $199 monthly, Business, POST /api/v1/batch](https://datacircle.dev/business-verification-apis/filed/199-monthly-business-post-api-v1-batch/llms.txt): $19.90 per 1,000, 36% complete
- [Filed, $499 monthly, Scale, POST /api/v1/batch](https://datacircle.dev/business-verification-apis/filed/499-monthly-scale-post-api-v1-batch/llms.txt): $9.98 per 1,000, 36% complete
- [Filed, $490 yearly](https://datacircle.dev/business-verification-apis/filed/490-yearly/llms.txt): $40.833 per 1,000, 64% complete
- [Filed, $1,990 yearly, Business (annual), POST /api/v1/batch](https://datacircle.dev/business-verification-apis/filed/1990-yearly-business-annual-post-api-v1-batch/llms.txt): $16.583 per 1,000, 36% complete
- [Filed, $4,990 yearly, Scale (annual), POST /api/v1/batch](https://datacircle.dev/business-verification-apis/filed/4990-yearly-scale-annual-post-api-v1-batch/llms.txt): $8.317 per 1,000, 36% complete
- [Filed, contact us, Enterprise, POST /api/v1/batch](https://datacircle.dev/business-verification-apis/filed/contact-us-enterprise-post-api-v1-batch/llms.txt): 36% complete

## Filed's calls (3)

- `GET /api/x402/entity`: [Filed, pay as you go](https://datacircle.dev/business-verification-apis/filed/pay-as-you-go/llms.txt)
- `GET /api/v1/search`: [Filed, $49 monthly](https://datacircle.dev/business-verification-apis/filed/49-monthly/llms.txt)
- `POST /api/v1/batch`: [Filed, $199 monthly, Business, POST /api/v1/batch](https://datacircle.dev/business-verification-apis/filed/199-monthly-business-post-api-v1-batch/llms.txt)

## Filed's APIs (1)

- [Filed: business verification API pricing, 8 plans](https://datacircle.dev/business-verification-apis/filed/pay-as-you-go/llms.txt)

## Filed: business verification API alternatives

- [OpenCorporates, free](https://datacircle.dev/business-verification-apis/opencorporates/free/llms.txt): $0.00 per 1,000, 27% complete, stored
- [Registry Lookup, free](https://datacircle.dev/business-verification-apis/registry-lookup/free/llms.txt): $0.00 per 1,000, 27% complete, 7 days
- [Zephira, free](https://datacircle.dev/business-verification-apis/zephira/free/llms.txt): $0.00 per 1,000, 9% complete
- [OpenSOSData, $100 monthly, Starter Cached, POST /v1/lookup](https://datacircle.dev/business-verification-apis/opensosdata/100-monthly-starter-cached-post-v1-lookup/llms.txt): $10.00 per 1,000, 100% 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 2026-10-30.

- https://filed.dev/api-x402
- https://filed.dev/developers
- https://filed.dev/docs/api/search
- https://filed.dev/docs/credits
- https://filed.dev/docs/data/coverage
- https://filed.dev/docs/data/freshness
- https://filed.dev/docs/errors
- https://filed.dev/docs/rate-limits
- https://filed.dev/enterprise
- https://filed.dev/llms-full.txt
- https://www.filed.dev/llms.txt
- https://www.filed.dev/terms