companies-house-mcp

[](https://www.npmjs.com/package/companies-house-cli) [](https://www.npmjs.com/package/companies-house-mcp) [](https://opensource.org/licenses/MIT)

An unofficial CLI and MCP server for the UK Companies House API. Look up any UK company, check its officers, trace ownership, dig into filings, run a due diligence scan — from your terminal, your scripts, or directly inside Claude, Cursor, or any other AI tool that speaks MCP.

Everything runs on a free API key. No backend, no subscriptions, no middleman.

Documentation: companies-house.uk

CLI — installs the ch binary:

npm install -g companies-house-cli
ch config set-key your-key-here

MCP server — for Claude, Cursor, Zed, and others:

npx -y companies-house-mcp

Both packages use the same free API key from developer.company-information.service.gov.uk.

Search and lookup

• search_companies / ch search — find companies by name, with filters for status, type, SIC code, and location
• search_officers / ch search-officers — find officers across all companies by name
• get_company_profile / ch profile — full company profile: status, addresses, SIC codes, key dates

Officers and ownership

• get_officers / ch officers — current and resigned directors, secretaries, and other officers
• get_appointments — every company a given officer has ever been appointed to
• get_ownership / ch ownership — persons with significant control (PSCs), corporate ownership chains

**F