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Rails AI Context: MCP server for Rails apps

@crisnahine

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Basic information

Category

Developer Tools

Transports

stdio

Author

crisnahine

Submitted by

Cris Joseph

About Rails AI Context: MCP server for Rails apps

Lets AI coding agents ask your Rails app instead of guessing: 35 read-only tools for schema, models, routes and views, over MCP or CLI.

#ruby#rails#mcp#ai#introspection#developer-tools#claude#cursor#copilot#codex

Rails AI Context: MCP server for Rails apps config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "rails-ai-context": {
      "command": "bundle",
      "args": [
        "exec",
        "rails-ai-context",
        "serve"
      ]
    }
  }
}

Rails AI Context: MCP server for Rails apps tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Rails AI Context?

rails-ai-context is a Ruby gem that lets AI coding agents ask a Rails app about itself instead of writing from memory. 35 read-only tools answer from the app: the schema, models and associations, routes, controllers and inherited filters, views, jobs, tests and conventions. It runs as an MCP server or from any terminal, and still answers in a static tier when the app cannot boot.

Works with Claude Code, Cursor, GitHub Copilot, OpenCode and Codex CLI. Other MCP clients (Claude Desktop, Windsurf, Zed, JetBrains) take the entry rails-ai-context mcp-entry prints.

How to install

In the Gemfile:

bundle add rails-ai-context --group development
bin/rails generate rails_ai_context:install --tools claude --defaults

Standalone, with no Gemfile change:

gem install rails-ai-context
rails-ai-context init --tools claude --defaults

--tools takes claude, cursor, copilot, opencode, codex or all.

Is it safe?

Every tool is read-only. Secrets, credentials and sensitive columns are kept back, and the tools run on your machine: nothing about the app is sent anywhere.

Docs: https://crisnahine.github.io/rails-ai-context/docs.html

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