Companies House MCP Server

by aicayzer Your server? Claim it

local only

Companies House runs on your own machine — the client starts it, so there is no endpoint to ping. 55 installs a week from npm. Last commit 4 Aug 2026.

UK Companies House public register: search companies, officers, ownership, filings and documents.

Installs per day peak 27 · avg 10 · +17% w/w

a month agotoday

Installs / week

npm · companies-house-mcp

Stars

1 open issues

4 Aug 2026

Last commit

0 releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Companies House every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add companies-house -- npx -y companies-house-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "companies-house": {
      "args": [
        "-y",
        "companies-house-mcp"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.companies-house]
command = "npx"
args = ["-y", "companies-house-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "companies-house": {
      "args": [
        "-y",
        "companies-house-mcp"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "companies-house": {
      "args": [
        "-y",
        "companies-house-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: COMPANIES_HOUSE_API_KEY (Your own API key from developer.company-information.service.gov.uk — free to register). The author declared them in the registry entry; get the values from the project itself.

Alternatives to Companies House

same job, measured the same way

dokumendiregister.ee — Estonian public-authority documents

by nimistu

Estonian public-authority document registers: one search across all, docs linked to companies.

6 tools answering

Docket Nexus

by docketnexus

Search public U.S. federal litigation: companies, cases, dockets and document metadata.

6 tools answering

Comitelligence — EU Comitology Register

by left-handed-grannies

Agent-native search of EU comitology: committees, votes, dossiers, and implementing-act documents.

8 tools answering

Unofficial Tesoro High School MCP

by mattmireles

Read-only search over Tesoro High School's public documents. Unofficial, unaffiliated.

2 tools answering

Congressional Documents

by pipeworx-io

Congressional Documents — full-text search and retrieval over the official

39 tools answering

Arne Kellmann Consulting

by arnekellmann

Read consulting services and search public architecture consulting documents in English or German.

3 tools answering

Hong Kong CourtDB

by indotender

Search Hong Kong court cases and read judgment documents.

3 tools answering

Laserfiche MCP

by samuelshernandez

MCP server for self-hosted Laserfiche repositories — search and read documents from Claude.

117 installs/wk local only

Companies House — questions

Answers built from our own checks of this server.

Why is there no uptime for Companies House?

Companies House runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package companies-house-mcp was installed 55 times last week.

How do I connect Companies House?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls companies-house-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Companies House?

The npm package companies-house-mcp was installed 55 times in the last week. Week over week that is +17%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Companies House open source?

Yes — it is published under the MIT licence, written in TypeScript, 13 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.