# OpenAI Codex CLI — Official Coding Agent

> OpenAI official coding agent CLI. Supports Agent Skills, custom prompts, and IDE integration. Open-source alternative to Cursor.

## Install

Copy the content below into your project:

## Quick Use

```bash
npm install -g @openai/codex
codex
```

Or use without installing:
```bash
npx @openai/codex
```

---

## Intro

OpenAI's open-source coding agent CLI — a lightweight Rust-based tool that brings GPT-5 to your terminal for code generation, debugging, and refactoring. Supports the Agent Skills standard (compatible with Claude Code and Gemini CLI), custom markdown slash commands, and IDE extensions for VS Code, Cursor, and Windsurf. 68,200+ GitHub stars.

---

## Key Features

- **Lightweight Rust CLI** — Fast startup, minimal resource usage
- **Agent Skills support** — Same SKILL.md format as Claude Code and Gemini CLI
- **Custom slash commands** — Turn markdown files into reusable commands
- **IDE integration** — VS Code, Cursor, Windsurf extensions
- **Multi-model** — GPT-5.2, GPT-5.1, GPT-5, o3, o4-mini

## Custom Prompts

Create `.codex/prompts/my-command.md` to add custom slash commands:
```markdown
---
name: review
description: Review code for bugs and improvements
---
Review the selected code for potential bugs, security issues, and improvements.
Focus on correctness, performance, and readability.
```

## Skills

Codex supports the same Agent Skills format as Claude Code:
```
.codex/skills/my-skill/SKILL.md
```

Skills auto-activate based on context. Cross-compatible with Claude Code and Gemini CLI via [agentskills.io](https://agentskills.io).

---



### FAQ

**Q: What is OpenAI Codex CLI?**
A: OpenAI official coding agent CLI. Supports Agent Skills, custom prompts, and IDE integration. Open-source alternative to Cursor.

**Q: How do I install OpenAI Codex CLI?**
A: Check the Quick Use section above for step-by-step installation instructions. Most assets can be set up in under 2 minutes.

## Source & Thanks

> Created by [OpenAI](https://github.com/openai). Licensed under Apache 2.0.
> [codex](https://github.com/openai/codex) — ⭐ 68,200+
> Docs: [developers.openai.com/codex](https://developers.openai.com/codex)

---
Source: https://tokrepo.com/en/workflows/3de6c5c7-9a28-489e-807d-86ffbe5784ec
Author: TokRepo Curated