Install and overview

A chat panel that puts a coding agent inside the Unity Editor. Claude Code is the default, and Codex, Grok Build and other ACP-capable CLIs can be selected instead. From a docked panel you can ask the agent to write code, fix files and work on the scene. A permission card appears before every tool runs, and the conversation survives script recompiles.

Supported agents

Agent	Connection
Claude Code / Anthropic	Native
Codex / OpenAI	ACP connection
Grok Build / xAI	ACP connection
Gemini CLI / Google	ACP connection
Custom ACP / Qwen Code, Kimi CLI and others	Configure command and arguments

Select an agent in Settings → connect → choose a model in the header.

Agent setup and switching (Japanese) · Model selection (Japanese)

Scene-editing examples

Claude Code	Codex	Grok Build

Add lights and resize objects	Arrange and color objects	Adjust scene lighting

Examples and switching agents · Image generation · X search

Chat	Permission card	Settings

What it does

Chat — streamed replies, slash-command completion, thinking summaries, subagent progress cards and question cards you answer by clicking.
Permission cards — allow once, allow for the session, or deny with a reason before a file edit or command runs. Auto-approval can be widened step by step in Settings.
Unity context — attach the Hierarchy / Project selection, Console errors, dragged assets and images with one click.
Unity tools — the agent edits scenes, components and assets, searches and takes screenshots without writing C#. One turn undoes with a single Undo.
Script verification gate — C# written by the agent reaches Assets only after it compiles (Windows).
Domain-reload resilience — the same session reconnects after a recompile or an editor restart.
History, model picker, in-panel login — restore past sessions, switch models and log the CLI in without leaving the panel.
Other agents — switch to Codex, Grok Build or any ACP-capable CLI.
English / Japanese — the UI follows the OS language and can be switched in Settings.

See the user guide for details (Japanese).

Requirements

Item	Details
Unity	2022.3 LTS or later, including Unity 6
OS	Verified on Windows. macOS / Linux should work but are untested
Claude Code CLI	Latest release recommended; the panel can install it for you
Claude account	Subscription login recommended (an API key also works)

Step-by-step sign-in guides with screenshots (Japanese): Claude Code · Codex · Grok Build · Gemini CLI · other ACP agents.

Installation

No required package dependencies (UITK Font Fix is picked up for CJK fonts when present, but is optional). Use option 1 if you manage the project with VCC / ALCOM, otherwise option 2.

Option 1: add to VCC / ALCOM

In VCC open Settings > Packages > Add Repository; in ALCOM open Resources > Repositories > Add Repository. Paste the URL below and press Add.
```
https://c-colloid.github.io/vpm/index.json
```
Open Manage Project (Manage in ALCOM) for the project and press + next to Agent Panel for Unity. Type “Agent” in the search box to narrow a long list.
Later updates show up as an Update button in the same list.

ALCOM Add Repository dialog with the URL entered

Agent Panel for Unity in the Manage Packages list

Option 2: Git URL in the Package Manager

Git must be installed (get it from git-scm.com and restart Unity if not).

Open Window > Package Manager.
Press + in the top-left corner and choose Add package from git URL… (Install package from git URL… on Unity 6).

Paste the URL below and press Add (Install on Unity 6).

https://github.com/c-colloid/AgentPanelForUnity.git?path=jp.colloid.unity-agent-panel

To update later, select the package in Package Manager and press Update.

The Git URL field with the URL pasted

Agent Panel for Unity listed under In Project

Option 3: zip

Extract jp.colloid.unity-agent-panel-<version>.zip from the latest release into Packages/jp.colloid.unity-agent-panel/ in your project (so that package.json sits directly in that folder). Update by replacing the folder.

Trying a beta

Every finished piece of work ships as a beta, X.Y.Z-beta.N; a stable release bundles them every few days to weeks. Betas are invisible to a normal install and reach you through these routes:

VCC / ALCOM: turn on Settings > Packages > Show Pre-release Packages in VCC, or Show pre-release packages in ALCOM’s settings, and the betas appear in the same list.

Git URL: append #beta to the URL.

https://github.com/c-colloid/AgentPanelForUnity.git?path=jp.colloid.unity-agent-panel#beta

zip: the entries marked Pre-release under Releases.

Getting started

Open Window > Agent Panel.
If the CLI is missing or you are not logged in, follow the card in the panel to install and log in.
Once the status bar says idle, send a message.

Core and Pro

This README installs Core (jp.colloid.unity-agent-panel, MIT), which works on its own. The separately sold Agent Panel Pro (jp.colloid.agent-panel-pro, PolyForm Internal Use License 1.0.0: internal use and modification allowed, no distribution) adds prefab override tools, animation / material editing, lightmap baking (with Bakery support), editor UI automation and bundled profiles for VRChat SDK3 (Base, Avatars and Worlds) / Udon / UdonSharp / NDMF / Modular Avatar / VRCFury / Avatar Optimizer / lilycalInventory / lilToon / UniVRM / MagicaCloth2 / Final IK / ProBuilder and others. To install Pro, enter the registry URL and product key you receive at purchase under Settings > Agent Panel Pro updates; updates then come through Package Manager or VCC / ALCOM (see the user guide).

Documentation

Documentation site — the user guide, showcase and changelog with search (same content as the Markdown below)
User guide (Japanese) — a task-based index: getting started, per-agent sign-in, layout and chat, chips and attachments, permission cards, history, Unity tools, settings reference, troubleshooting
CHANGELOG
docs/ — architecture and design notes
CONTRIBUTING.md — development, tests and releases

License

Each package has its own license.

Core (jp.colloid.unity-agent-panel, what this README installs): MIT License
Agent Panel Pro (jp.colloid.agent-panel-pro, sold separately): PolyForm Internal Use License 1.0.0 (not MIT). The license text and the licensor’s additional permissions ship inside the Pro package as LICENSE.md / LICENSE-ADDITIONAL.md