The Codex Integration for Claude Code is a workflow pattern and plugin ecosystem that enables developers to use 📝Claude Code (Anthropic) and 📝Codex (OpenAI)📝Command Line Interface (CLI) together within the same software project. The integration relies on shared instruction files like AGENTS.md, which both terminal-based AI coding agents read to maintain consistent project context. Claude Code supports Codex delegation through plugins like skill-codex, allowing Claude to spawn Codex sessions for specialized tasks such as code review or implementation validation. The collaborative approach leverages complementary strengths: Claude Code excels at planning and multi-agent orchestration, while Codex offers strict sandboxing and deep analysis capabilities.
