Companies House vs OpenLeads

In-depth architectural comparison of the Companies House and OpenLeads 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?

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.

Explore Companies House Details

O

Choose OpenLeads 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: Federated public-data lead search, Email evidence labels for found, pattern, and guessed addresses, Email verification checks.

Feature & Specification Comparison

Specification	Companies House Developer Tools	O OpenLeads Developer Tools
Summary	MCP server and CLI for the UK Companies House API. Search, filings, officers, due diligence.	Find people and work emails from public data, labeled found, pattern, or guessed. No API keys.
Category & Scope	Developer Tools	Developer Tools
Quality signal

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

{
  "mcpServers": {
    "openleads": {
      "command": "npx",
      "args": [
        "-y",
        "openleads"
      ]
    }
  }
}

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