godot-mcp — Pure Python FastMCP Server for Godot 4

A zero Node.js Model Context Protocol server for Godot 4 — translated from Coding-Solo/godot-mcp and youichi-uda/godot-mcp-pro into pure Python using the official FastMCP framework. Runs with ultra-low RAM via uvx.

Quick Start

You can invoke this server over standard I/O (stdio) from anywhere on your machine instantly using uvx without manually cloning files or configuring virtual environments:

bash

# Run globally via uvx from PyPI (Bypasses local setup completely)
GODOT_PATH=/path/to/godot4 uvx --from godot-mcp-uvx godot-mcp

# Local development installation (For active contributors)
git clone https://github.com/jxlee007/godot_mcp
cd godot_mcp
uv tool install --editable .

MCP Client Configuration

Add this structural configuration block straight into your global client matrix environment profile (e.g., ~/.gemini/antigravity-cli/settings.json or Claude / Cline settings):

json

{
  "mcpServers": {
    "godot_render": {
      "command": "uvx",
      "args": [
        "--from",
        "godot-mcp-uvx",
        "godot-mcp"
      ],
      "env": {
        "GODOT_PATH": "/path/to/godot4",
        "DEBUG": "false"
      }
    }
  }
}

Environment Variables

Variable	Description
`GODOT_PATH`	Path to the Godot 4 executable (auto-detected if unset)
`DEBUG`	`"true"` enables verbose stderr logging

Tools (28 total)

Core Runtime (14)

Tool	Description
`get_godot_version`	Return installed Godot version
`launch_editor`	Open Godot editor for a project
`run_project`	Run project in debug mode, capture output
`get_debug_output`	Read stdout/stderr from running project
`stop_project`	Kill running project, return final output
`list_projects`	Find Godot projects in a directory
`get_project_info`	Metadata, file counts, version
`create_scene`	Create a new .tscn file via GDScript
`add_node`	Add a node to an existing scene
`load_sprite`	Load texture onto Sprite2D/TextureRect
`export_mesh_library`	Export .tscn as MeshLibrary .res
`save_scene`	Save / save-as a scene file
`get_uid`	Get UID for a Godot 4.4+ resource
`update_project_uids`	Resave all resources to regenerate UIDs

Animation Text Pipeline (4)

Tool	Description
`quantize_animation_keyframes`	Round timestamps to fixed fps increments (12/24 fps anime look)
`set_animation_interpolation_mode`	Bulk-swap easing: linear, cubic, nearest/stepped
`stitch_animation_library`	Merge external .glb/.tres clips into master AnimationLibrary
`generate_track_filter`	Generate AnimationNodeBlendFilter for upper/lower body isolation

AnimationTree Blueprinting (3)

Tool	Description
`generate_state_machine`	Inject AnimationNodeStateMachine into a .tscn file
`compile_state_transitions`	Write transition arrows with conditions
`calculate_blend_space_2d`	Generate 2D blend space for directional locomotion

Camera & Cinematic (3)

Tool	Description
`generate_bezier_camera_path`	Catmull-Rom bezier Path3D + PathFollow3D + Camera3D with tension control
`inject_lookat_tracking`	Generate LookAt tracking GDScript for Camera3D
`build_camera_switcher_timeline`	Write Animation that switches Camera3D.current at timestamps

NPR Materials & Shaders (2)

Tool	Description
`batch_shader_uniforms`	Bulk-override shader_parameter/* in all .tres files
`remap_texture_channels`	Wire textures into material property slots

Pipeline Automation (2)

Tool	Description
`toggle_movie_maker`	Edit project.godot to enable/disable Movie Maker mode
`run_headless_diagnostics`	Validate imports, UIDs, shader entry points via Godot CLI

Architecture

src/godot_mcp/
├── __init__.py
├── server.py              # FastMCP app — all 28 tools
└── scripts/
    └── godot_operations.gd  # Bundled GDScript engine (preserved untouched)

Two operation modes:

Subprocess bridge — core 14 tools invoke godot_operations.gd headlessly via subprocess.run()
Text manipulation — pro-port 14 tools parse/write .tscn, .tres, project.godot files as plain text using Python stdlib re only