Godot Agent — Development skill for Claude Code

Godot Agent Harness

**English** · [Español](README.es.md)


An editor addon for Godot 4 that connects a coding agent (Claude Code, Google Antigravity, Codex, or any agent that speaks [ACP](https://agentclientprotocol.com)) to the editor. You chat with the agent in a dock, and it can see and change your project through the editor's own tools:

• read scenes and scripts, the selection and the errors;
• edit nodes and properties, each change one undo step;
• run the game with simulated input and look at captured frames (click one in the chat to see it full size);
• review code and leave findings in the Script Editor;
• use the MCP servers of other programs (Blender, a database…), set up in Settings with their own permissions;
• find, install and enable Godot addons from the Asset Store (the agent can suggest them too);
• manage Claude Code's plugins, marketplaces, MCP servers and skills from the Extensions window, with Godot skills one click away.

It has five modes: **Ask**, **Review**, **Build**, **Auto** (Build that runs the shell commands your rules allow without asking) and **One-shot**. One-shot pursues a whole goal ("a 2-player Pong with score") with a plan, budgets, git checkpoints and playtests.

• 100 % statically typed GDScript: no GDExtension, no dependencies.
• Editor-only: nothing from the addon ends up in an exported game.
• The harness never merges or pushes, never stores keys and never reads the agent's credentials.
• The interface is in English and Spanish (it follows the editor language; you can change it in Settings).
• The chat renders the agent's Markdown: tables, lists, quotes, and code blocks with highlighting and a copy button.

Status: milestones M0–M8c of [`GODOT_AGENT_HARNESS_SPEC.md`](GODOT_AGENT_HARNESS_SPEC.md) are implemented. Progress and ho