Project Sunset Notice — v1.0.0 "Swan Song" is the final release of UniClaude. Anthropic's updated Terms of Service now prohibit third-party tools from authenticating via Claude subscription OAuth, which was UniClaude's core pricing model. See OutroMigration.md for context and a plan for extracting UniClaude's MCP tools into a standalone, client-agnostic package. Thank you to everyone who used and contributed to this project.
Technical Overview — architecture, engineering challenges, and project scope at a glance.
Claude Code, natively inside Unity Editor. A dockable chat window with full project awareness, 75+ MCP tools, an opinionated Unity architecture advisor, and zero alt-tabbing — all powered by your Claude subscription.
- Editor chat window — dockable panel with streaming responses, dark/light theme, and conversation history
- Unity Agent persona — a built-in system prompt that makes Claude a strict, professional Unity developer. It documents all 75 MCP tools with efficiency patterns, enforces design-first workflows, and flags anti-patterns before they ship.
- 10 architecture skills — Claude Code skills covering the full Unity development lifecycle: architecture decisions, component design, data modeling, scene/prefab authoring, animation workflows, performance optimization, and code review. Skills load on demand via the Agent SDK's plugin system.
- Project awareness — UniClaude indexes your scenes, prefabs, scripts, shaders, and ScriptableObjects so Claude understands your project structure
- 75+ Unity tools — Claude can inspect and modify scenes, prefabs, components, materials, animations, tags, layers, and project settings through the MCP protocol — all with full Undo integration
- Model selection — choose between Sonnet, Opus, and Haiku with configurable reasoning effort (Low → Max)
- File & image attachments — attach project files and screenshots directly in the chat input
- Permission system — every tool call requires explicit approval (allow once, allow for session, or deny)
- Slash commands — extensible command system with autocomplete (
/healthcheck,/clear,/export, and more) - Diff viewer — review script edits in a colored diff popup (green/red lines) without leaving UniClaude
- Settings panel — configurable font size, Node.js path, sidecar port, context token budget, and package filtering
- Ninja Install Mode — optional embedded-clone install that hides UniClaude from
git statusandpackages-lock.jsonon team projects. Reversible from Settings. - Version tracker — Settings tab surfaces new releases from GitHub once a day, with inline changelog preview and one-click update (mode-aware for Ninja and Standard installs).
- MCP server — JSON-RPC 2.0 server that exposes Unity editor actions to any MCP-compatible client
- Domain reload resilience — survives Unity's domain reload cycle with automatic reconnection
| Requirement | Version |
|---|---|
| Unity | 6000.3+ (Unity 6) |
| Node.js | 18+ |
| Claude subscription | Pro or Max plan (authenticates via Claude Code's OAuth) |
Add via Unity Package Manager using the git URL:
- Open Window > Package Manager
- Click + > Add package from git URL...
- Enter:
https://github.com/TheArcForge/UniClaude.git#v1.0.0 - Click Add
- Open the UniClaude window: ArcForge > UniClaude
- On first launch, UniClaude will build its Node.js sidecar automatically (requires Node.js 18+ on your PATH)
- Ensure you're logged into Claude Code (
claudeCLI) — UniClaude authenticates through your Claude subscription - Start chatting — Claude can see your project structure, invoke architecture skills, and use editor tools with your permission
| Key | Action |
|---|---|
| Enter | Send message |
| Shift+Enter | New line |
| Escape | Cancel generation |
| Tab | Accept slash command autocomplete |
- Setup Guide — detailed installation, configuration, and troubleshooting
- Architecture — package structure, data flow, and extension points
See CONTRIBUTING.md for development setup, running tests, and pull request guidelines.
To report a vulnerability, see SECURITY.md.