companies-house

local MCP server

Installation

Terminal

claude mcp add io-github-aicayzer-companies-house -e COMPANIES_HOUSE_API_KEY=... -- npx -y companies-house-mcp

Run in your project folder. Add --scope user to use it everywhere.

Claude Desktop, Cursor & other clients

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "io-github-aicayzer-companies-house": {
      "command": "npx",
      "args": [
        "-y",
        "companies-house-mcp"
      ],
      "env": {
        "COMPANIES_HOUSE_API_KEY": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

Summary

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

Questions

companies-house is a local MCP server distributed as the npm package companies-house-mcp.

Run: claude mcp add io-github-aicayzer-companies-house -e COMPANIES_HOUSE_API_KEY=... -- npx -y companies-house-mcp

Run: codex mcp add io-github-aicayzer-companies-house --env COMPANIES_HOUSE_API_KEY=... -- npx -y companies-house-mcp

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