godot-cli-control 0.2.3

WebSocket bridge for headless / scripted control of Godot scenes.

godot-cli-control

WebSocket bridge for headless / scripted control of Godot 4 scenes — Python client + CLI.

Install

pipx install godot-cli-control

# or, for unreleased main:
pipx install "git+https://github.com/ClaymanTwinkle/godot-cli-control.git#subdirectory=python"

The wheel ships the Godot plugin source so the init command can drop it into your project.

Requires Python ≥ 3.10.

One-shot setup of a Godot project

cd path/to/your_godot_project
godot-cli-control init        # copies plugin, patches project.godot, detects Godot binary
godot-cli-control daemon start
godot-cli-control tree 3
godot-cli-control daemon stop

init is idempotent — running it twice on the same project does nothing the second time. Pass --force to overwrite an existing addons/godot_cli_control/.

init also writes .claude/skills/godot-cli-control/SKILL.md and .codex/skills/godot-cli-control/SKILL.md so AI agents working in your Godot project can pick up this CLI surface automatically. Use --no-skills to skip, or --skills-only to refresh just those files after a CLI upgrade. See the top-level README for details.

Async API

import asyncio
from godot_cli_control import GameClient

async def main():
    async with GameClient(port=9877) as client:
        tree = await client.get_scene_tree(depth=3)
        await client.click("/root/MyScene/Button")
        await client.action_press("jump")
        await client.wait_game_time(0.5)
        await client.action_release("jump")
        png_bytes = await client.screenshot()
        open("frame.png", "wb").write(png_bytes)

asyncio.run(main())

Sync API (for scripts and tests)

# script.py
def run(bridge):
    bridge.click("/root/MyScene/StartButton")
    bridge.wait(2)
    bridge.tap("attack")

godot-cli-control run script.py --headless     # auto-starts and stops the daemon

pytest fixtures

pip install "godot-cli-control[pytest]"

The package ships a pytest plugin (auto-loaded via pytest11 entry-point):

# tests/test_jump.py — no fixture boilerplate needed
def test_jump(godot_daemon, bridge):
    bridge.click("/root/Game/Start")
    bridge.tap("jump")
    assert bridge.get_property("/root/Player", "on_floor") is False

• godot_daemon (session-scoped) starts headless Godot once and stops it after all tests; if a daemon is already running it's reused (and not stopped at teardown — keeps your IDE workflow alive).
• bridge (function-scoped) gives a fresh GameBridge; on teardown it calls release_all() so a hold left behind by one case can't bleed into the next, then closes the connection.

CLI options:

--godot-cli-port=N           # GameBridge port (default 9877)
--godot-cli-no-headless      # open a real Godot window
--godot-cli-project-root=DIR # default: pytest rootdir

CLI

The CLI is the canonical surface — every GameClient method has a one-line equivalent. Default output is a JSON envelope (--text for legacy strings).

# Lifecycle
godot-cli-control init [--path DIR] [--force]
godot-cli-control daemon start [--headless --record --movie-path X --fps N --port N]
godot-cli-control daemon stop
godot-cli-control daemon status
godot-cli-control run <script.py> [--headless ...]

# Read
godot-cli-control tree [depth]
godot-cli-control get      <node_path> <prop>
godot-cli-control text     <node_path>
godot-cli-control exists   <node_path>      # exit 0=true, 1=false, 2=infra
godot-cli-control visible  <node_path>      # exit 0=true, 1=false, 2=infra
godot-cli-control children <node_path> [type-filter]
godot-cli-control pressed
godot-cli-control actions [--all]

# Write / call
godot-cli-control set   <node_path> <prop>   <json-value>
godot-cli-control call  <node_path> <method> [json-args...]
godot-cli-control click <node_path>

# Input
godot-cli-control press|release <action>
godot-cli-control tap   <action> [duration]
godot-cli-control hold  <action>  <duration>
godot-cli-control combo --steps-json '[...]'   # or `combo file.json` / `combo -` (stdin)
godot-cli-control combo-cancel
godot-cli-control release-all

# Wait
godot-cli-control wait-node <node_path> [timeout]   # exit 0=found, 1=timeout
godot-cli-control wait-time <seconds>

# Render (path is required as of 0.2.0)
godot-cli-control screenshot <output.png>

Output contract

• success: {"ok": true, "result": <data>} on stdout, exit 0
• error: {"ok": false, "error": {"code": N, "message": "..."}} on stdout, exit 1 (RPC) or 2 (connection / usage)
• --text / --no-json switches back to the legacy human-readable strings; errors then go to stderr.

exists / visible / wait-node propagate their boolean result to the exit code, so shell if works:

if godot-cli-control exists /root/Main/Boss; then
  godot-cli-control click /root/Main/Boss
fi

The port is read from .cli_control/port if you don't pass --port, so RPC calls just work after daemon start.

Testing

# Python unit tests + coverage (fails if below 80%)
pip install -e ".[test]"
coverage run -m pytest python/tests/
coverage report

# GUT tests for the Godot plugin (needs GODOT_BIN env var)
GODOT_BIN=/path/to/godot ./addons/godot_cli_control/tests/run_gut.sh

Documentation

See the Godot plugin README for the full RPC reference, activation modes, security model, and known limitations.