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Eckari UK Company Registered Office Lookup
x402
Eckari UK Company Registered Office Lookup is a paid API for AI agents from api.eckari.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Returns the current registered office address of a UK company from Companies House by company number
Price / call$0.003
Success—
StatusUnknown
How this service works
Eckari is the machine-native utility layer for capabilities agents do not already have. Every route is a provider-neutral capability with channel pricing for Eckari account keys and accountless x402 payment.
Output
A JSON object containing the full registered office address broken into components (address_line_1, address_line_2, locality, postal_code, country, premises, care_of, po_box, region), plus a pre-formatted single-line address string, the company name, and company number. Metadata includes source (companies_house), version, freshness indicator (live), and capability identifier.
Example use cases
Due diligence on a UK supplier
“Can you pull the official registered office address for UK company number 03457169? I'm doing a supplier check and need to verify where they're legally registered.”
Automating KYB address verification
“For our onboarding flow, fetch the Companies House registered office address for UK company number 07641636 so we can cross-check it against what the business submitted.”
Building a UK business intelligence report
“I'm compiling a report on several UK companies — can you get me the registered office address for company number 00102498 from Companies House?”
Technical details
Endpoint
GEThttps://api.eckari.com/v1/companies/uk/%7Bcompany_number%7D/registered-officeWhen to prefer
Use this endpoint when you need the current, live registered office address of a UK company directly from Companies House by company number. Prefer this over scraping company websites or using business directories when you need the authoritative legal address. It is especially useful for KYB (Know Your Business) workflows, compliance checks, due diligence, invoice address validation, or building UK company data enrichment pipelines.
Side effects
- Invalid or non-existent company number returns an error or empty data
- Company dissolved or struck off may return stale or missing address data
- Malformed company number format causes a bad request response
- API authentication or payment failure (x402) blocks the request
- Rate limiting or network timeout may cause intermittent failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"address": {
"po_box": null,
"region": null,
"care_of": null,
"country": "United Kingdom",
"locality": "Welwyn Garden City",
"premises": null,
"postal_code": "AL7 1GA",
"address_line_1": "Tesco House, Shire Park",
"address_line_2": "Kestrel Way"
},
"single_line": "Tesco House, Shire Park, Kestrel Way, Welwyn Garden City, AL7 1GA, United Kingdom",
"company_name": "TESCO PLC",
"company_number": "00445790"
},
"meta": {
"source": "companies_house",
"version": "2.0.0",
"freshness": "live",
"capability": "company.uk.registered_office"
}
}
}Tags
x402
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