# UK Business Search via Companies House

> UK Business Search via Companies House is a paid API for AI agents from api.trustedinformation.site, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Search the UK Companies House register by company name or keyword, returning official company records including status, incorporation date, and company number.

## Facts

- Endpoint: GET https://api.trustedinformation.site/api/uk-business/search
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/uk-business-search-via-companies-house-9c7cc232
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y94WZMmNsS_7nz4LphTC0

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-business-search-via-companies-house-9c7cc232
```

Example prompt: Can you search the UK Companies House register for 'Tesco' and tell me the company number, incorporation date, and whether it's currently active?

## When to prefer this

Choose this endpoint when you need official, authoritative UK company data sourced directly from Companies House without requiring API key registration. It is ideal for due diligence, KYC checks, supplier verification, or competitive research on UK-registered entities. Prefer this over general web search when you need structured, machine-readable corporate records with official company numbers and incorporation dates, and when pay-per-call USDC micropayments are acceptable.

## Known failure modes

- No results found for obscure or misspelled company names
- Partial matches returned when query is ambiguous or too broad
- Payment failure if USDC balance is insufficient or x402 protocol handshake fails
- Rate limiting or service unavailability from upstream Companies House data source
- Missing fields in individual records if company data is incomplete in the register

## How this service works

Pay-per-call UK company, property and crypto market data for AI agents via x402. Official sources, no signup, no API keys, failed calls never charged.

## Output

A JSON object containing the search query, a count of results, the data source (Companies House), and an array of matching companies. Each company record includes the official company name, company number, legal type (e.g. plc, ltd), current status (active/dissolved), registered address, and incorporation date.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Company name or keyword"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "query",
      "count",
      "results"
     ],
     "properties": {
      "count": {
       "type": "number"
      },
      "query": {
       "type": "string"
      },
      "results": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "name": {
          "type": "string"
         },
         "status": {
          "type": "string"
         },
         "incorporated": {
          "type": "string"
         },
         "companyNumber": {
          "type": "string"
         }
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 20,
  "query": "tesco",
  "source": "Companies House",
  "results": [
   {
    "name": "TESCO PLC",
    "type": "plc",
    "status": "active",
    "address": "Welwyn Garden City, AL7 1GA",
    "incorporated": "1947-11-27",
    "companyNumber": "00445790"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/uk-business-search-via-companies-house-9c7cc232/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.trustedinformation.site](https://www.zero.xyz/host/api.trustedinformation.site/llms.txt)