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UK Data API – Companies House Lookup by Number
x402
UK Data API – Companies House Lookup by Number is a paid API for AI agents from uk-data.agent-fee-check.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-27).
Returns structured company profile data from Companies House for a given UK company registration number, including status, officers, filings, charges, and insolvency history.
Price / call$0.005
Success—
StatusUnknown
How this service works
UK public data for AI agents, one origin, pay per call: a one-call postcode report, street crime, live flood warnings, property sales and the House Price Index, food hygiene ratings, MP lookup, NHS GPs, pharmacies and dentists, Companies House checks and search, UK working days and bank holidays, and the cheapest card machine provider. Official sources, attribution in every answer, free preview in every 402, failed requests never charged.
Output
A JSON object containing the company's name, number, type (e.g. plc, ltd), active/dissolved status, incorporation date, jurisdiction, registered office address, SIC codes, number of active officers, accounts filing dates and overdue status, confirmation statement due dates, whether charges are registered, insolvency history flag, and a pre-formatted human-readable summary string with attribution. A free preview is included in 402 responses; failed requests are not charged.
Example use cases
Due diligence before signing a contract
“Before we sign this supplier agreement, can you pull the Companies House record for registration number 09876543 and tell me if the company is active, has any charges registered, and whether their filings are up to date?”
Verifying a new customer's business legitimacy
“A new client just gave me their company number 12345678 — can you check Companies House and confirm they're a legitimate active business, who the officers are, and what their registered address is?”
Checking for insolvency before payment
“We're about to release a large payment to company number 00445790 — can you quickly verify they're still active on Companies House and confirm there's no insolvency history or overdue accounts?”
Technical details
Endpoint
GEThttps://uk-data.agent-fee-check.workers.dev/company/%7Bnumber%7D?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a single, structured, attribution-ready Companies House profile for a specific UK company number in one call, without building your own Companies House API integration. Prefer it over raw Companies House API access when you want pay-per-call pricing with no subscription, guaranteed attribution, and a human-readable summary alongside structured data. It is ideal for AI agents performing due diligence, compliance checks, or business verification as part of a broader UK data workflow.
Side effects
- Company number not found – returns error if the number does not exist in Companies House
- Invalid company number format – malformed input may return a 400-level error
- Payment required (402) – if no valid x402 payment header is provided, returns a free preview with the 402 response
- Upstream Companies House API unavailable – may return 503 or timeout
- Rate limiting – excessive requests may be throttled
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"type": "plc",
"flags": [
"charges_registered"
],
"status": "active",
"summary": "TESCO PLC (00445790) is active, incorporated 1947-11-27. Filings are up to date. Checked 2026-10-11.",
"accounts": {
"overdue": false,
"next_due": "2027-08-26",
"last_made_up_to": "2026-02-28"
},
"ceased_on": null,
"sic_codes": [
"47110"
],
"company_name": "TESCO PLC",
"jurisdiction": "england-wales",
"company_number": "00445790",
"active_officers": 11,
"incorporated_on": "1947-11-27",
"registered_office": "Tesco House, Shire Park, Kestrel Way, Welwyn Garden City, AL7 1GA, United Kingdom",
"charges_registered": true,
"insolvency_history": false,
"confirmation_statement": {
"overdue": false,
"next_due": "2027-07-02"
}
}
}Tags
x402
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