AI Coding AssistantsIntermediate
Install OpenAI Codex CLI
Run OpenAI's Codex CLI from your terminal to automate coding tasks, write scripts, and modify files with AI.
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codexopenaicliterminalagent
What is Codex CLI?
Codex CLI is OpenAI's open-source terminal agent that takes natural language instructions and executes real coding tasks — reading files, writing code, running commands, and fixing bugs.
Requirements
- Node.js 22+
- An OpenAI API key (or a compatible free API key from OpenRouter)
Install Node.js 22+
Codex CLI requires Node.js version 22 or higher.
Check your current version:
node --version
If it's below 22, download Node.js 22 LTS from nodejs.org or use a version manager:
# Using nvm (Mac/Linux)
nvm install 22
nvm use 22
📌 Important
Codex CLI requires Node.js 22 or higher. Older versions will not work.