Churnkey vs Fanout

In-depth architectural comparison of the Churnkey and Fanout 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 Churnkey when:

• You need dedicated capabilities in the Monitoring domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Churnkey Details

Choose Fanout when:

• You need dedicated capabilities in the Monitoring domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Fanout Details

Feature & Specification Comparison

Specification	C Churnkey Monitoring	Fanout Monitoring
Summary	Read and manage Churnkey cancel flows, retention metrics, and payment recovery	Investigate OpenTelemetry traces, metrics, and logs, and manage personal dashboards.
Category & Scope	Monitoring	Monitoring
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": {
    "churnkey": {
      "command": "npx",
      "args": [
        "-y",
        "churnkey"
      ]
    }
  }
}

{
  "mcpServers": {
    "fanout-2": {
      "command": "npx",
      "args": [
        "-y",
        "fanout-2"
      ]
    }
  }
}

Related MCP Server Comparisons