Cern Opendata MCP Server vs Companies House

In-depth architectural comparison of the Cern Opendata MCP Server and Companies House MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

C

Choose Cern Opendata MCP Server when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: cern_opendata_search_records, cern_opendata_get_records, cern_opendata_list_files.

Explore Cern Opendata MCP Server Details

Choose Companies House when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• You have access to required keys: COMPANIES_HOUSE_API_KEY.
• Primary tools included: Company and officer search, Company profiles and statutory records, Ownership, appointments and disqualification lookup.

Feature & Specification Comparison

Specification	C Cern Opendata MCP Server Developer Tools	Companies House Developer Tools
Summary	Search CERN Open Data, fetch records, files, analysis environments, CMS good-run lists, HLT paths.	MCP server and CLI for the UK Companies House API. Search, filings, officers, due diligence.
Category & Scope	Developer Tools	Developer Tools

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "cern-opendata-mcp-server": {
      "command": "bunx",
      "args": [
        "@cyanheads/cern-opendata-mcp-server@latest"
      ]
    }
  }
}

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

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