Companies House

# Companies House CLI & MCP > UK Companies House API tools. CLI binary and MCP server for company search, profiles, officers, filings, charges, insolvency, ownership, and due diligence. ## Packages - [companies-house-cli](https://www.npmjs.com/package/companies-house-cli): CLI binary (`ch`) for terminal access — install globally with `npm install -g companies-house-cli` - [companies-house-mcp](https://www.npmjs.com/package/companies-house-mcp): MCP server for Claude, Cursor, Zed, and other AI tools — run with `npx -y companies-house-mcp` ## API key Free key from https://developer.company-information.service.gov.uk/ — required by both packages. ## Tools - search_companies — search UK companies by name, status, type, SIC code, or location - search_officers — search for company officers by name - get_company_profile — company status, registered addresses, SIC codes, accounts and confirmation statement dates - get_officers — current and resigned directors, secretaries, and other officers - get_appointments — all appointments held by a specific officer across all companies - get_ownership — persons with significant control (PSCs) and corporate ownership structure - get_filings — filing history with document metadata and download links - get_filing_document — retrieve a specific filing document by company number and transaction ID - get_charges — charges and mortgages registered against the company - get_insolvency — insolvency proceedings, liquidations, and administrations - get_company_registers — statutory registers (members, directors, secretaries, charges) - get_exemptions — disclosure exemptions held by the company - get_uk_establishments — UK establishments of overseas companies - get_officer_disqualifications — disqualification orders made against an officer - company_report — full company overview combining profile, officers, ownership, charges, filings, and insolvency in a single call - due_diligence_check — automated