Skill Shelf (Rust singleton daemon) vs AgentPhone

In-depth architectural comparison of the Skill Shelf (Rust singleton daemon) and AgentPhone 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 Skill Shelf (Rust singleton daemon) 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).

Explore Skill Shelf (Rust singleton daemon) Details

Choose AgentPhone 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).

Explore AgentPhone Details

Feature & Specification Comparison

Specification	Skill Shelf (Rust singleton daemon) Developer Tools	AgentPhone Developer Tools
Summary	Progressive group routing for 393 professional skills via Rust daemon stdio shim.	Give AI agents real phone numbers, messages, and voice calls via MCP.
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": {
    "skill-shelf-rust-singleton-daemon": {
      "command": "npx",
      "args": [
        "-y",
        "skill-shelf-rust-singleton-daemon"
      ]
    }
  }
}

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

Related MCP Server Comparisons