Unity Agent Harness for Claude Code. Auto-compiles C# on every edit, runs EditMode/PlayMode test pipelines with error checking, and performs deep code review using Claude subagents — with each finding independently verified against source before fixing. Includes tykit, an HTTP server inside Unity Editor for AI agent control (run tests, play/stop, read console, inspect GameObjects). 20 slash commands covering the full dev loop from edit to ship. Optional cross-model review via Codex CLI for teams that want multi-model verification. macOS, Unity 2021.3+.