Codex
MCP
- Supported
- Yes
- Transports
- stdio, Streamable HTTP
- Features
- Tools
- OAuth sign-in
- Yes
Agent Skills
- Supported
- Yes
- Skill folders
$CWD/.agents/skills$CWD/../.agents/skills$REPO_ROOT/.agents/skills$HOME/.agents/skills/etc/codex/skills
Coding plans
Plans that list this client as a supported tool- ChatGPT plans for Codex Plus, Pro 5x, Pro 20x
- GLM Coding Plan Lite, Pro, Max
- Kimi Code (Kimi membership) Plus, Pro, Max
- Model Studio Coding Plan Pro
Models via these plans
GLM-4.7, GLM-5, GLM-5.3, GLM-5.3-Flash, GPT-6 Luna, GPT-6 Sol, Kimi K2.7 Code HighSpeed, Kimi K3, kimi-k2.5, MiniMax-M2.5, Qwen3 Coder Plus, Qwen3 Max, qwen3-coder-next, Qwen3.5 Plus, Qwen3.6 Plus, Qwen3.7 Plus
Sources
- Codex: MCP docs developers.openai.com · checked Oct 4, 2026
- Codex: Agent Skills docs learn.chatgpt.com · checked Oct 4, 2026