Companies House MCP

An unofficial CLI and MCP server that allows AI assistants and scripts to interact with the UK Companies House public register. It enables searching for companies and officers, retrieving company profiles, tracing ownership through persons with significant control, and downloading filed documents. The server operates using the user's own free API key, sending requests directly to Companies House without a hosted backend or proxy.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by aicayzer

You need:Get a free API key at developer.company-information.service.gov.uk

Vendor documentation

What you can do with it

Search companies by name with filters for status, type, and location
Retrieve company profiles including addresses, SIC codes, and filing dates
Trace ownership and persons with significant control
Download filed PDF documents from the register

Source and maintenance

Community listingRegistry 4.0.1

mcp-registry: io.github.aicayzer/companies-house@4.0.1 Source repository

Maintenance checked: Oct 31, 2026, 10:59 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

companies-house-mcp 4.0.1

npm

companies-house-mcp package definition

{
  "version": "4.0.1",
  "transport": "stdio",
  "identifier": "companies-house-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "COMPANIES_HOUSE_API_KEY",
      "description": "Your own API key from developer.company-information.service.gov.uk — free to register"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "companies-house-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "companies-house-mcp@4.0.1"
      ],
      "env": {
        "COMPANIES_HOUSE_API_KEY": "<YOUR_COMPANIES_HOUSE_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "companies-house-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "companies-house-mcp@4.0.1"
      ],
      "env": {
        "COMPANIES_HOUSE_API_KEY": "<YOUR_COMPANIES_HOUSE_API_KEY>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "companies-house-mcp-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "companies-house-mcp@4.0.1"
      ],
      "env": {
        "COMPANIES_HOUSE_API_KEY": "<YOUR_COMPANIES_HOUSE_API_KEY>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "companies-house-mcp-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "companies-house-mcp@4.0.1"
      ],
      "env": {
        "COMPANIES_HOUSE_API_KEY": "<YOUR_COMPANIES_HOUSE_API_KEY>"
      }
    }
  }
}

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