# Rails Agent Skills

This MCP server gives coding agents procedures for Rails implementation, review, and maintenance. Use it to route a task to a relevant Rails specialist.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 28
- Author: igmarin
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/igmarin/rails-agent-skills/tree/HEAD/mcp_server
- Updated: 2026-09-28
- HTML: https://affpapa.org/en/nevibecode/mcp/rails-agent-skills

## What it does

The server exposes procedures for Rails work. `rails-feature` handles changes to application behavior, `rails-review` checks diffs, and `rails-maintenance` covers project setup, conventions, refactoring, and engine upkeep. A shared `work-router` chooses an entry; when the task is clear, you can call a specialist directly.

There are also specialist cards for Rails APIs, authorization, background jobs, GraphQL, Hotwire, migrations, performance, security, engines, setup, and tests. Ruby language patterns are handled by `ruby-core-skills`. The MCP connection starts a Docker container over stdio, so the `docker` command must be available.

## Requirements
- Needs: Docker

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add mcp_server -- docker run -i --rm docker.io/igmarin/rails-agent-skills-mcp:5.1.7
```

### Codex

**Platform CLI**
```bash
codex mcp add mcp_server -- docker run -i --rm docker.io/igmarin/rails-agent-skills-mcp:5.1.7
```

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "mcp_server": {
            "command": "docker",
            "args": [
                "run",
                "-i",
                "--rm",
                "docker.io/igmarin/rails-agent-skills-mcp:5.1.7"
            ]
        }
    }
}
```

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "mcp_server": {
            "type": "stdio",
            "command": "docker",
            "args": [
                "run",
                "-i",
                "--rm",
                "docker.io/igmarin/rails-agent-skills-mcp:5.1.7"
            ]
        }
    }
}
```

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add mcp_server docker run -i --rm docker.io/igmarin/rails-agent-skills-mcp:5.1.7
```

## When to use it
- change behavior in a Rails application
- review a diff for security or migration risks
- set up Rails project conventions
- handle a GraphQL or background-job task
- assess a migration before production

## Example prompts
- Add an access check to this Rails operation.
- Review this diff for production migration risks.
- Set up this Rails project and check its conventions.

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