Unity releases official plugins for Claude Code and Codex

Unity has released official plugins for Anthropic's Claude Code and OpenAI's Codex coding agents. The plugins are designed to stop AI agents from relying on outdated Unity tutorials and documentation during development.

Why it matters: Game engines are becoming a testing ground for AI coding agents, and stale training data has been a persistent failure mode for LLM-based coding assistants in fast-moving frameworks. A first-party plugin from the engine maker itself signals that agent compatibility is now being treated as a real product requirement rather than an afterthought.