Companies House
🇬🇧🏦 MCP server for UK Companies House API - Search companies, retrieve detailed information, filing history, officers, and charges data through the Model Context Protocol
What is Companies House?
Companies House is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to 🇬🇧🏦 mcp server for uk companies house api - search companies, retrieve detailed information, filing history, officers, and charges data through the model context protocol
🇬🇧🏦 MCP server for UK Companies House API - Search companies, retrieve detailed information, filing history, officers, and charges data through the Model Context Protocol
This server falls under the Business Applications category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- 🇬🇧🏦 MCP server for UK Companies House API - Search companies
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx companies-houseConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Companies House
The Companies House MCP Server connects AI assistants to the UK Companies House API, exposing 45+ tools for searching companies, retrieving detailed company profiles, filing histories, officer records, persons with significant control (PSC), and mortgage/charge information. It enables due diligence workflows, corporate research, and business intelligence tasks entirely through natural language, making it easy to investigate UK-registered companies without manually navigating the Companies House website.
Prerequisites
- Node.js 18 or later installed on your machine
- A free Companies House API key from the Developer Hub at developer.company-information.service.gov.uk
- An MCP client such as Claude Desktop or Claude Code
- npm or npx available in your PATH
Register for a Companies House API key
Visit the Companies House Developer Hub at developer.company-information.service.gov.uk, create an account, and register a new application to obtain your API key. The free tier allows 600 requests per 5 minutes.
Add the server to your MCP client configuration
Open your Claude Desktop configuration file and add the companies-house-mcp-server entry. On macOS the file is at ~/Library/Application Support/Claude/claude_desktop_config.json; on Windows it is at %APPDATA%\Claude\claude_desktop_config.json.
{
"mcpServers": {
"companies-house": {
"command": "npx",
"args": ["-y", "companies-house-mcp-server"],
"env": {
"COMPANIES_HOUSE_API_KEY": "your_api_key_here"
}
}
}
}Restart Claude Desktop
Save the configuration file and restart Claude Desktop. The MCP server will be launched automatically on the next session start and you will see the companies-house tools become available.
Verify the connection
Ask Claude to search for a well-known UK company to confirm the server is working correctly and your API key is valid.
Optional: build from source
If you prefer to run from a local build instead of npx, clone the repository and build it yourself.
git clone https://github.com/stefanoamorelli/companies-house-mcp.git
cd companies-house-mcp
npm install
npm run buildCompanies House Examples
Client configuration
Minimal Claude Desktop configuration using the npx install method and your Companies House API key.
{
"mcpServers": {
"companies-house": {
"command": "npx",
"args": ["-y", "companies-house-mcp-server"],
"env": {
"COMPANIES_HOUSE_API_KEY": "your_api_key_here"
}
}
}
}Prompts to try
Examples of natural language queries you can send once the server is connected.
- "Search for companies named 'Revolut' and show me their registration details."
- "Get the full filing history for company number 08804411."
- "Who are the current officers of Arm Holdings PLC?"
- "Show me all persons with significant control for company 07534229."
- "What mortgage charges are registered against Deliveroo PLC?"Troubleshooting Companies House
API returns 401 Unauthorized errors
Double-check that your COMPANIES_HOUSE_API_KEY is correctly set in the env section of the config. The key must be the live key from the Developer Hub, not a test key. Also ensure there are no trailing spaces in the value.
Rate limit errors (429) when making many requests
The Companies House API allows 600 requests per 5 minutes per key. Slow down your queries or spread them over time. Avoid running bulk lookups in rapid succession.
npx fails to install the package or command not found
Ensure Node.js 18+ is installed with 'node --version'. Try running 'npx -y companies-house-mcp-server' directly in a terminal to see any installation errors. If the package name has changed, check the repository for the current published package name.
Frequently Asked Questions about Companies House
What is Companies House?
Companies House is a Model Context Protocol (MCP) server that 🇬🇧🏦 mcp server for uk companies house api - search companies, retrieve detailed information, filing history, officers, and charges data through the model context protocol It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Companies House?
Follow the installation instructions on the Companies House GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Companies House?
Companies House works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Companies House free to use?
Yes, Companies House is open source and available under the AGPL-3.0 license. You can use it freely in both personal and commercial projects.
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