Companies House (UK)

live GovernmentFinance

UK statutory company registry — search, officers, filings, persons with significant control. Free key required.

5 tools
0ms auth
free tier 50 calls/day
🔑 Authentication

Companies House requires a free API key. Pass _apiKey on the gateway URL or register a developer key directly with HMRC.

Config with credentials 
{
  "mcpServers": {
    "pipeworx-companies-house": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote@latest",
        "https://gateway.pipeworx.io/companies-house/mcp?_apiKey=your_ch_key"
      ]
    }
  }
}

Generate an app password →

Tools

search_companies required: query

Search UK companies by name.

Parameters
Name Type Description
query req string Company name
items_per_page opt number 1-100 (default 20)
start_index opt number Pagination offset
▶ Try it
get_company required: company_number

Full company profile by company number.

Parameters
Name Type Description
company_number req string UK company number
▶ Try it
get_officers required: company_number

Directors / secretaries for a UK company.

Parameters
Name Type Description
company_number req string UK company number
items_per_page opt number 1-100
start_index opt number Pagination offset
register_type opt string directors | secretaries | llp-members
▶ Try it
get_filings required: company_number

Filing history for a UK company.

Parameters
Name Type Description
company_number req string UK company number
category opt string Optional filter (accounts, confirmation-statement, officers, etc.)
items_per_page opt number 1-100
start_index opt number Pagination offset
▶ Try it
get_persons_with_significant_control required: company_number

PSC records for a UK company (beneficial owners).

Parameters
Name Type Description
company_number req string UK company number
items_per_page opt number 1-100
start_index opt number Pagination offset
▶ Try it

Test with curl

The gateway speaks JSON-RPC 2.0 over HTTP POST. You can test any pack directly from the terminal.

List available tools
bash 
curl -X POST https://gateway.pipeworx.io/companies-house/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'
Call a tool
bash 
curl -X POST https://gateway.pipeworx.io/companies-house/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"search_companies","arguments":{"query": "hello"}}}'

Use with the SDK

Install @pipeworx/sdk to call tools from any TypeScript/Node project.

TypeScript 
import { Pipeworx } from '@pipeworx/sdk';
const px = new Pipeworx();
const result = await px.call("search_companies", {"query":"example"});
ask_pipeworx 
// Or ask in plain English:
const answer = await px.ask("uk statutory company registry — search, officers, filings, persons with significant control");