Skip the install. Get this working in under 2 minutes.
Start a free trial on cloud.anythingmcp.com, add the UK Companies House in one click, then point your AI client (Claude, ChatGPT, Copilot or Cursor) at the generated MCP endpoint. No Docker, no git clone, zero engineering experience required.
Summary
Search and inspect the official UK companies register: company profiles, directors and secretaries, filing history. Free public API with a 600 requests / 5 minutes rate limit. The UK equivalent of the German Handelsregister.
Try asking
Example prompts for UK Companies House
Click any prompt to copy it. Paste into Claude, ChatGPT, Cursor, Gemini, Copilot or OpenClaw to run it against this connector.
Claude is AI and can make mistakes. Please double-check responses.
💡 No install? Use cloud.anythingmcp.com directly. Sign in, click Connectors → UK Companies House, paste your credentials, mint an MCP API key — done. No Docker, no
git clone, no local server.
UK Companies House + ChatGPT
Search and inspect the official UK companies register: company profiles, directors and secretaries, filing history. Free public API with a 600 requests / 5 minutes rate limit. The UK equivalent of the German Handelsregister.
Prerequisites
See the full setup instructions baked into the connector (visible in the in-app store when you select the connector). The required environment variables for this connector are:
COMPANIES_HOUSE_API_KEY
Step 1 — Get credentials
Getting an API key: register a free account at https://developer.company-information.service.gov.uk → 'Manage applications' → 'Create an application' (pick Live or Test) → 'Create new key' → REST. Copy the generated key into COMPANIES_HOUSE_API_KEY. The key is a 36-character ID with dashes (like 1a2b3c4d-5e6f-...), shown under the application's Keys list — not the application name, and not the account password.
Authentication quirk: Companies House uses HTTP Basic Auth where the API key is the username and the password is empty (the canonical curl shape is -u API_KEY:). This adapter mirrors that — leave the password configuration empty.
…(continued in the in-app connector instructions)
Step 2 — Install the adapter
curl -fsSL https://raw.githubusercontent.com/HelpCode-ai/anythingmcp/main/docker-compose.quickstart.yml -o docker-compose.yml
printf 'JWT_SECRET=%s\nENCRYPTION_KEY=%s\n' "$(openssl rand -hex 32)" "$(openssl rand -hex 32)" > .env
docker compose up -d
Step 3 — Add the connector in ChatGPT
Your server URL: in AnythingMCP, open MCP Servers → the server this connector is on, and copy its URL (
https://cloud.anythingmcp.com/mcp/…). Use it wherever this guide showsYOUR_SERVER_ID.
ChatGPT connects to MCP servers as custom apps in developer mode, available on paid plans (not on Free). On Business and Enterprise workspaces an admin may have to allow it first.
- In ChatGPT, open Settings → Security and login and turn on Developer mode.
- Go to chatgpt.com/plugins and click +.
- Enter a name and a short description, e.g. Name:
UK Companies House. - Under Connection, enter the MCP server URL
https://cloud.anythingmcp.com/mcp/YOUR_SERVER_IDand create the connection. - When ChatGPT asks, sign in to AnythingMCP (OAuth) and allow access.
Available tools
| Tool | What it does |
|---|---|
companies_house_search_company | Search the UK companies register by company name or number |
companies_house_get_company_profile | Fetch the full profile for a UK company by its 8-character zero-padded company number |
companies_house_list_officers | List directors, secretaries and other officers (current and resigned) for a UK company |
companies_house_list_filings | List the filing history (accounts, confirmation statements, officer appointments, share allotments, …) for a UK company |
FAQ
Does the free ChatGPT plan work with custom MCP connectors? No. Custom MCP connections need developer mode, which is only on paid plans.
Next steps
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