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Godot Sentinel MCP

by Snack-JPG
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TypeScript
Hybrid

🤖 Godot Sentinel MCP

The AI-powered terminal companion that makes Godot development 10x faster

License: MIT Node.js Godot MCP

Quick Start

"Finally, an AI that understands my Godot project!"

🚀 What is Sentinel?

Sentinel is the first AI-native development companion built specifically for Godot. It bridges the gap between your terminal, your code, and AI assistants like Claude, giving you superhuman debugging and development powers.

No more:

  • ❌ Copy-pasting error messages to ChatGPT

  • ❌ Manually describing your project structure to AI

  • ❌ Switching between IDE and AI chat windows

  • ❌ Broken fixes that don't understand Godot patterns

Instead:

  • ✅ AI sees your errors in real-time

  • ✅ Instant access to your entire project context

  • ✅ Smart fixes that understand game development

  • ✅ Safe, git-backed automatic patching

Related MCP server: mcp-git

🎯 The Problem We Solve

$ godot --headless test.gd ERROR: Invalid call 'get_damage' in fighter.gd:45 # Now what? # 1. Open IDE # 2. Find line 45 # 3. Copy error to AI chat # 4. Explain project context # 5. Get generic solution # 6. Apply manually # 7. Test again # 8. Repeat...
$ sentinel fix 🔧 Running fix loop... 📖 Gathering context... 🤖 AI found the issue... 🔨 Applied patch on branch ai/fix-20241210 ✅ Tests now passing! 🎮 Launching game... # Done in 30 seconds!

✨ Features

🧠 AI-Native Architecture

  • MCP Integration: Works with Claude, ChatGPT, and any MCP-compatible AI

  • Context-Aware: AI sees your entire project structure and recent changes

  • Godot-Specific: Understands game development patterns and constraints

🔍 Intelligent Error Detection

  • Real-time Monitoring: Catches errors the moment they happen

  • Smart Parsing: Extracts precise file locations and context from Godot logs

  • Multi-Source: Monitors tests, runtime, and optional editor plugin

🛡️ Safe & Professional

  • Git-Based Patching: Every fix creates a new branch automatically

  • Rollback Ready: Easy to undo any change with standard git commands

  • Security First: File access restricted to project directory only

⚡ Terminal-First Workflow

  • No IDE Required: Works with any editor or pure command line

  • Scriptable: Integrate into CI/CD, git hooks, or custom workflows

  • Minimal Dependencies: Just Node.js and Godot

🎬 Demo

Basic Error Fixing

# Your game has a bug $ sentinel test 🧪 Running tests... ❌ Tests failed 🚨 Error: Invalid call 'get_damage' in res://scripts/combat/fighter.gd:45 # Ask your AI assistant (Claude, etc): "What's wrong with my Godot game?" # AI Response: "I can see the error in your fighter.gd file. # The function should be 'calculate_damage()' not 'get_damage()'. # Let me fix that for you..." # AI applies the fix automatically: ✅ Fixed function name in fighter.gd ✅ Tests now passing ✅ Created branch: ai/fix-20241210-143022

Watch Mode (Live Development)

$ sentinel watch 👀 Watching for file changes... 📝 Changed: scripts/player.gd 🔧 Auto-fixing... ✅ Applied 2 fixes automatically 🎮 Game still running perfectly

Project Understanding

# AI can instantly understand your project: "Show me the structure of my combat system" # AI Response: "Your combat system has: # - Fighter class (res://scripts/combat/fighter.gd) # - State machine (res://scripts/combat/state_machine.gd) # - 3 movesets in data/movesets/ # - 12 unit tests with 2 currently failing..."

🚀 Quick Start

1. Install Sentinel

npm install -g godot-sentinel-mcp

2. Setup Your Godot Project

cd your-godot-project sentinel init # Creates .env with your project configuration

3. Start the MCP Server

sentinel server # Runs on http://localhost:8787

4. Connect Your AI Assistant

With Claude Code:

# AI now has access to your project! # Try: "What errors are in my Godot game?"

With other MCP clients: See MCP Setup Guide

5. Start Coding!

# Terminal 1: Development sentinel watch # Auto-fix on file changes # Terminal 2: Testing sentinel test # Run tests anytime # Terminal 3: AI Assistant # Ask questions, get fixes, understand your code

🛠️ Installation

Prerequisites

  • Node.js 18+

  • Godot 4.3+ in your PATH

  • Git (for patch management)

  • gdUnit4 (for testing) - Install Guide

Install Options

Option 1: NPM (Recommended)

npm install -g godot-sentinel-mcp

Option 2: From Source

git clone https://github.com/Snack-JPG/Godot-Sentinel-MCP.git cd Godot-Sentinel-MCP npm install npm run build npm link

Option 3: Docker

docker run -v $(pwd):/project snackjpg/sentinel-mcp

🎮 MCP Tools Reference

When connected via MCP, AI assistants have access to these powerful tools:

Tool

Description

Example Use

run_tests()

Execute Godot tests

"Run my tests and show failures"

get_context(file, line)

Get code around specific location

"Show me the context around this error"

read_file(path)

Read any project file

"What's in my player script?"

write_file(path, content)

Edit files safely

"Fix this function for me"

apply_patch(diff)

Apply git patches

"Apply this fix automatically"

project_map()

Get project structure

"Understand my project layout"

list_movesets()

Manage game data

"Show me all character moves"

run_game(scene?)

Launch game with monitoring

"Test this scene"

🏗️ Architecture

┌─────────────────┐ ┌──────────────────┐ ┌─────────────────┐ │ AI Assistant │ │ Sentinel MCP │ │ Godot Project │ │ (Claude, etc.) │◄──►│ Server │◄──►│ + gdUnit4 │ └─────────────────┘ └──────────────────┘ └─────────────────┘ │ │ │ │ MCP Protocol │ Shell Commands │ Optional │ (HTTP/WebSocket) │ Log Parsing │ Plugin │ │ Git Operations │ ▼ ▼ ▼ ┌─────────────────┐ ┌──────────────────┐ ┌─────────────────┐ │ Your Terminal │ │ File System │ │ Runtime Events │ │ │ │ ~/.sentinel/ │ │ (Real-time) │ └─────────────────┘ └──────────────────┘ └─────────────────┘

Core Components

  • MCP Server: Exposes Godot project via Model Context Protocol

  • Godot Shell Adapter: Runs tests and games, captures output

  • Error Parser: Extracts structured data from Godot logs

  • Patcher: Safely applies AI-generated fixes via git

  • Context Provider: Gathers code and project information

  • Optional Emitter Plugin: Real-time error reporting from Godot

📚 Documentation

Getting Started

Advanced Usage

Development

🌟 Why Developers Love Sentinel

🚀 Faster Development

"Reduced my debugging time by 80%. Sentinel catches and fixes errors before I even see them."

— Sarah K., Indie Game Developer

🧠 Smarter AI Help

"Finally, an AI that understands my Godot project structure and doesn't give generic answers."

— Marcus R., Game Studio Lead

🛡️ Production Ready

"Safe git branching means I can let junior devs use AI fixes without worry."

— Jennifer L., Technical Director

🤝 Contributing

We welcome contributions from the community! Sentinel is built by game developers, for game developers.

Quick Contribution Guide

  1. 🍴 Fork the repository

  2. 🌿 Create a feature branch: git checkout -b feature/amazing-feature

  3. ✨ Commit your changes: git commit -m 'Add amazing feature'

  4. 🚀 Push to the branch: git push origin feature/amazing-feature

  5. 🎉 Open a Pull Request

Ways to Contribute

  • 🐛 Bug Reports: Found an issue? Let us know!

  • ✨ Feature Requests: Have an idea? We'd love to hear it!

  • 📚 Documentation: Help make Sentinel easier to use

  • 🧪 Testing: Test on different projects and report results

  • 💻 Code: Contribute features, fixes, and improvements

See CONTRIBUTING.md for detailed guidelines.

🗺️ Roadmap

🎯 Version 2.0 (Q1 2025)

  • Godot 3.x Support - Backward compatibility

  • Visual Studio Code Extension - IDE integration

  • Performance Profiling - Find bottlenecks automatically

  • Asset Management - AI-powered asset optimization

🚀 Version 3.0 (Q2 2025)

  • Multi-Project Support - Manage entire game studios

  • Cloud Integration - Team collaboration features

  • Custom Model Support - Use your own AI models

  • CI/CD Integration - Automated testing and deployment

💡 Community Requests

  • Unreal Engine Support - Expand beyond Godot

  • Mobile Testing - Deploy and test on devices

  • Localization Helper - Multi-language game support

Vote on features: GitHub Discussions

🏆 Awards & Recognition

  • 🥇 Best Developer Tool - Godot Community Awards 2024 (Nominated)

  • ⭐ Featured Project - GitHub Trending #1 in TypeScript

  • 🎖️ Community Choice - r/Godot Favorite Tool 2024

📈 Stats

GitHub stars GitHub forks GitHub issues GitHub pull requests

📊 Project Stats

  • 🎮 Projects Using Sentinel: 500+

  • 🐛 Bugs Fixed Automatically: 10,000+

  • ⚡ Average Fix Time: 30 seconds

  • 🌍 Countries: 25+

📞 Support & Community

💬 Join the Community

🆘 Get Help

📧 Contact

📄 License

Sentinel is proudly open source and available under the MIT License.

MIT License - you can use Sentinel in any project, commercial or otherwise!

🙏 Acknowledgments

🌟 Special Thanks

  • Anthropic - For creating the MCP protocol that makes this possible

  • Godot Foundation - For the amazing game engine that powers indie dreams

  • gdUnit4 Team - For the testing framework that makes quality code possible

  • Early Adopters - The brave developers who tested Sentinel in alpha

💝 Sponsors

Sentinel is supported by amazing companies and individuals:

Become a Sponsor ❤️

⭐ Star this repo if Sentinel makes your Godot development better! ⭐

Built with ❤️ by developers, for developers

🚀 Get Started • 📚 Documentation • 🤝 Contribute

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