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minimal-godot-mcp

MCP server bridging Godot's native LSP to AI coding assistants for GDScript validation

License: MIT Node.js

Table of Contents

Quick Start

Prerequisites: Node.js 22+, Godot 3.2+ or 4.x with LSP enabled

git clone https://github.com/ryanmazzolini/minimal-godot-mcp.git
cd minimal-godot-mcp
npm install && npm run build

Start Godot with your project, then configure your MCP client (see below).

Configuration

Environment Variables

Variable

Description

Default

GODOT_LSP_PORT

Override LSP port

Tries 6007, 6005, 6008

GODOT_WORKSPACE_PATH

Godot project path

Auto-detected from cwd

GODOT_DAP_PORT

Override DAP port

Tries 6006, 6010

GODOT_DAP_BUFFER_SIZE

Max console entries to buffer

1000

MCP Client Setup

Add to ~/.claude.json:

{
  "mcpServers": {
    "godot": {
      "command": "node",
      "args": ["/path/to/minimal-godot-mcp/dist/index.js"],
      "env": {
        "GODOT_WORKSPACE_PATH": "/path/to/your/godot/project"
      }
    }
  }
}

Add to .cursor/mcp.json in your project:

{
  "mcpServers": {
    "godot": {
      "command": "node",
      "args": ["/path/to/minimal-godot-mcp/dist/index.js"],
      "env": {
        "GODOT_WORKSPACE_PATH": "/path/to/your/godot/project"
      }
    }
  }
}

Configure your client to run:

node /path/to/minimal-godot-mcp/dist/index.js

Set GODOT_WORKSPACE_PATH environment variable to your Godot project root.

Features

  • Zero-config LSP - Uses Godot's native Language Server, no plugins required

  • Fast diagnostics - Single-file checks return quickly

  • Minimal footprint - Lightweight responses to minimize token usage

  • Resilient connections - Handles Godot restarts automatically

  • Workspace scanning - Bulk check all .gd files in a project

MCP Tools

get_diagnostics

Check a single GDScript file for errors.

// Input
{ "file_path": "/path/to/script.gd" }

// Output
{
  "diagnostics": {
    "/path/to/script.gd": [
      { "line": 5, "column": 14, "severity": "error", "message": "Expected identifier", "code": "parse-error" }
    ]
  }
}

scan_workspace_diagnostics

Scan all .gd files in the workspace (excludes addons/ and .godot/).

// Input
{}

// Output
{
  "files_scanned": 150,
  "files_with_issues": 3,
  "scan_time_seconds": 1.5,
  "diagnostics": { ... }
}

get_console_output

Get console output from Godot debug session. Requires a running scene (F5 in Godot).

// Input (all optional)
{
  "limit": 50,
  "category": "console",
  "since": 1706000000000
}

// Output
{
  "entries": [
    { "timestamp": 1706000001234, "category": "console", "message": "Player spawned", "source": "/project/player.gd", "line": 42 }
  ],
  "total_buffered": 150
}

Categories: console (print statements), stdout, stderr (errors/warnings).

clear_console_output

Clear the console output buffer.

// Input
{}

// Output
{ "cleared": true }

Development

Architecture

flowchart LR
    MCP[MCP Client] <-->|stdio| Server[minimal-godot-mcp]
    Server <-->|LSP :6007| Godot[Godot Editor]
    Server <-.->|DAP :6006| Godot
  • LSP (Language Server Protocol, solid line): Always connected for diagnostics

  • DAP (Debug Adapter Protocol, dotted line): Lazy-connects when get_console_output is called with a running scene

See also:

Commands

npm test          # Run tests
npm run lint      # ESLint + Prettier
npm run build     # Compile TypeScript

Contributing

  1. Run npm run format && npm test before submitting

  2. Test with a real Godot project

  3. Keep scope focused on diagnostics

Troubleshooting

See docs/troubleshooting.md for connection issues, missing diagnostics, and debug logging.

References

License

MIT - see LICENSE

Install Server
A
security – no known vulnerabilities
A
license - permissive license
A
quality - confirmed to work

Resources

Looking for Admin?

Admins can modify the Dockerfile, update the server description, and track usage metrics. If you are the server author, to access the admin panel.

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