Companies House vs Follow Up Boss

In-depth architectural comparison of the Companies House and Follow Up Boss 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

Choose Follow Up Boss 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: FUB_API_KEY.
• Primary tools included: 160 tools covering the Follow Up Boss API, Safe Mode with deletion tools disabled, Contact, deal, task, and appointment management.

Feature & Specification Comparison

Specification	Companies House Developer Tools	Follow Up Boss Developer Tools
Summary	MCP server and CLI for the UK Companies House API. Search, filings, officers, due diligence.	Follow Up Boss CRM in plain English. 160 tools; bring your own API key.
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": {
    "follow-up-boss": {
      "command": "npx",
      "args": [
        "-y",
        "follow-up-boss"
      ],
      "env": {
        "FUB_API_KEY": "YOUR_FUB_API_KEY_HERE"
      }
    }
  }
}

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