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OpenAI Codex CLI- Skills & Compatibility Guide

Codex CLI is OpenAI's open-source terminal-based coding agent that supports skills through its AGENTS.md file and plugin system. It uses a similar approach to Claude Code with terminal-first interaction and supports multi-agent workflows. Many ClaudeCodeSkill can be used with Codex CLI with minimal adaptation through its compatible skill format.

Key Features

  • Open source
  • Terminal-first
  • Multi-model support
  • Plugin system
  • AGENTS.md configuration
  • Sandbox execution
  • Git integration

Claude Skills Compatibility

Many ClaudeCodeSkill work directly or with minor adaptation

Skill Format: AGENTS.md + plugins

Compatible Skills: 2,800

How to Use Skills with Codex CLI

To use ClaudeCodeSkill with Codex CLI, follow these steps:

  1. Browse our skills library and find a skill you want
  2. Check the compatibility badge on the skill page for Codex CLI support
  3. Download or clone the skill to your project's skills directory
  4. Follow any agent-specific setup instructions on the skill page