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Verify UK Business Check
x402
Verify UK Business Check is a paid API for AI agents from verify-uk.verifyuk.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Checks a UK business against Companies House, HMRC VAT, and FCA registers to surface trust signals, warnings, and cautions
Price / call$0.02
Success—
StatusUnknown
How this service works
Pay-per-call UK verification tools for AI agents: validators, business checks and website trust checks from official UK public data. Pay with USDC via x402 - no account, no API key.
Output
A JSON object containing an array of trust signals (each with a code, severity level, and human-readable message) and a summary object with counts of warnings and cautions plus a headline string like '1 warning, 1 caution - review before trusting or paying.'
Example use cases
Supplier due diligence before payment
“I'm about to pay a UK supplier — their company number is 09876543 and they gave me VAT number GB987654321. Can you verify these match and flag any issues before I transfer the money?”
FCA-regulated firm verification
“I need to check whether a financial advisory firm in the UK is properly FCA authorised — their FRN is 123456. Can you pull their registration details and tell me if anything looks off?”
New vendor onboarding check
“We're onboarding a new UK vendor called Acme Supplies Ltd with company number 07654321 — can you cross-check them against Companies House and HMRC and give me a summary of any red flags?”
Technical details
Endpoint
GEThttps://verify-uk.verifyuk.workers.dev/v1/business/check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify the legitimacy of a UK-registered business using official public data sources (Companies House, HMRC, FCA) before making a payment, signing a contract, or onboarding a vendor. It is particularly valuable when you have a company number, VAT number, or FCA FRN and want cross-register validation with trust signals. Prefer this over generic company search tools when you specifically need UK regulatory cross-checks and a structured warning/caution summary. It requires no account or API key and charges $0.02 USDC per call via x402.
Side effects
- Company number not found on Companies House — returns no match signal
- VAT number format invalid — may return validation error or format signal
- FCA FRN not found — returns unregistered signal
- Name-only search returns ambiguous results if multiple businesses share the name
- Payment not made or insufficient USDC — 402 Payment Required response
- Rate limiting or network timeout on upstream UK register APIs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"signals": [
{
"code": "vat_name_mismatch",
"level": "warning",
"message": "VAT is registered to a different business."
}
],
"summary": {
"cautions": 1,
"headline": "1 warning, 1 caution - review before trusting or paying.",
"warnings": 1
}
}
}Tags
x402
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