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RunOnProof UK Company Check
x402
RunOnProof UK Company Check is a paid API for AI agents from api.runonproof.com, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-15).
Verifies a UK company's legal status and insolvency observations by resolving its Companies House identity in a single paid API call.
Price / call$0.04
Success—
StatusUnknown
How this service works
Check a UK company by resolving its Companies House identity and verifying current legal-status and insolvency observations in one paid call. Use before onboarding or contracting. It reports filing limits and does not promise universal good standing.
Output
Returns the resolved Companies House identity for the company, its current legal status, any insolvency observations on record, and applicable filing limit disclosures. Does not guarantee universal good standing but surfaces key risk signals relevant to onboarding or contracting decisions.
Example use cases
Pre-contract supplier due diligence
“We're about to sign a contract with Britannia Logistics Ltd, company number 09876543 — can you check their legal status and flag any insolvency observations before we proceed?”
New client onboarding verification
“We're onboarding a new client called Thames Digital Solutions, number 04123456. Can you verify their Companies House identity and confirm they're in good standing with no insolvency flags?”
Investor portfolio company check
“I need to check the current legal status of portfolio company Northern Star Manufacturing Ltd, Companies House number SC234567 — are there any insolvency observations I should know about?”
Technical details
Endpoint
POSThttps://api.runonproof.com/v1/gb/solutions/company-checkWhen to prefer
Use this endpoint when you need a quick, cost-effective single-call check on a UK-registered company's legal and insolvency status before onboarding, contracting, or payment. It is preferable over manual Companies House lookups when you need programmatic verification at scale, and over broader KYB platforms when only UK company status resolution is needed at low per-call cost ($0.04 USDC).
Side effects
- Company not found if name or number does not match any Companies House record
- Ambiguous match if company name resolves to multiple entities — supply company number for precision
- Payment failure if x402 payment is not correctly attached
- Invalid company number format if the number does not match the expected pattern
- Idempotency key mismatch if the key in the body differs from the Idempotency-Key header
- Rate limiting or quota errors if the caller exceeds allowed request volume
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| postal_code | string | |
| company_name | string | |
| company_number | string | Companies House company number, including any two-letter prefix when applicable. |
| idempotency_key | string | Caller-generated key. Send the identical value in the Idempotency-Key header. |
Tags
x402
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