# UK Company Search via Companies House

> UK Company Search via Companies House is a paid API for AI agents from uk-company-check.fly.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-10).

Search the official UK Companies House register by company name, returning up to 10 matches with company number, status, incorporation date, and postcode.

## Facts

- Endpoint: GET https://uk-company-check.fly.dev/v1/uk/company/search?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/uk-company-search-via-companies-house-c602fca8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VTMtlx31bZE3eeCOSJqQ7

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability uk-company-search-via-companies-house-c602fca8
```

Example prompt: Can you search the UK Companies House register for companies named 'Tesco' and give me their company numbers, registration status, and incorporation dates?

## When to prefer this

Use this endpoint when you need to discover UK company registration details by name — especially when you don't already know the company number. Prefer this over the by-number lookup when starting from a company name. Choose this for initial due diligence, supplier verification, or any scenario where you need to confirm a UK business exists and is active on the official register.

## Known failure modes

- No results found if the company name is misspelled or does not exist on the register
- Returns multiple ambiguous matches when a generic name is queried (e.g. 'Smith')
- Rate limiting or service unavailability from the underlying Companies House API
- Payment failure via x402 protocol resulting in a 402 response
- Empty result set for very new companies not yet indexed

## How this service works

Search the official UK company register (Companies House) by company name. Returns up to 10 matches with company number, status, incorporation date and postcode.

## Output

Returns up to 10 matching UK companies with their company number, company name, current status (e.g. Active, Dissolved), incorporation date, and registered postcode.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "UK company name, e.g. 'Tesco'"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/uk-company-search-via-companies-house-c602fca8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from uk-company-check.fly.dev](https://www.zero.xyz/host/uk-company-check.fly.dev/llms.txt)