Rails Agent Skills vs Spec Driven Development

In-depth architectural comparison of the Rails Agent Skills and Spec Driven Development 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 Rails Agent Skills 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 Rails Agent Skills Details

Choose Spec Driven Development 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 Spec Driven Development Details

Feature & Specification Comparison

Specification	Rails Agent Skills Developer Tools	Spec Driven Development Developer Tools
Summary	Rails development skills, docs, and workflows exposed through MCP stdio.	MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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": {
    "rails-agent-skills": {
      "command": "npx",
      "args": [
        "-y",
        "skills"
      ]
    }
  }
}

{
  "mcpServers": {
    "spec-driven-development": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-spec-driven-development@latest"
      ]
    }
  }
}

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