A curated list of awesome tools, skills, subagents, plugins, and resources for OpenAI Codex CLI - the open-source AI coding agent that runs in your terminal.
Codex CLI is OpenAI's open-source terminal-based coding agent. It lets you use GPT models to write, refactor, debug, and reason about code directly from the command line - with sandboxed execution, multi-agent orchestration, MCP support, and a growing ecosystem of skills and plugins. Think of it as an AI pair programmer that lives in your terminal.
Why this list? The Codex CLI ecosystem is fragmented across dozens of repos - subagents here, skills there, plugins somewhere else. This list consolidates 280+ resources into one place, organized by feature category, with opinionated descriptions so you know what's actually worth your time.
Looking for Claude Code or Gemini CLI? Check the comparison table below.
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Contents
- Official Resources
- Getting Started
- AGENTS.md Templates
- Subagents
- Skills
- Plugins
- Hooks
- MCP Servers
- IDE & Editor Integrations
- GUI & Desktop Apps
- Session & Workflow Management
- Model Providers & Proxies
- CI/CD & Automation
- Cross-Agent Tools
- Monitoring & Analytics
- Docker & Sandboxing
- Account & Auth
- Tutorials & Articles
- Videos & Podcasts
- Comparisons
- Community
- Shell & Terminal
- Remote Access
Official Resources
- Documentation - Official docs covering setup, config, security, and all features.
- Config Reference - All 85+ config properties for
config.toml. - Skills Docs - How to create and use SKILL.md files.
- Subagents Docs - Multi-agent orchestration with
.tomlagent definitions. - Plugins Docs - Distributable bundles of skills + apps + MCP servers.
- MCP Docs - Using Codex as MCP client and server.
- Hooks Docs - User-defined shell scripts in the agentic loop (beta).
- Security & Sandboxing - Seatbelt (macOS), Landlock/Bubblewrap (Linux), restricted-token (Windows).
- Non-interactive Mode -
codex execfor CI/CD and scripting. - Slash Commands - All 29 built-in commands:
/plan,/skills,/fast,/fork,/review, etc. - Best Practices - Official tips for getting the most out of Codex.
- Multi-Agent Guide - Parallel fan-out,
max_threads, depth control. - Workflows - Automation recipes and patterns.
- Exec Policy - Starlark-based fine-grained permission rules.
- Speed / Fast Mode - 1.5x speed, 2x credits.
- AGENTS.md Guide - Project-level instructions for Codex.
- Codex Web - Cloud-hosted Codex via ChatGPT.
- Codex for OSS Fund - Free Codex access for open-source maintainers.
- Skills Catalog - Official skills catalog:
.system,.curated, and.experimentalskills. The authoritative upstream source. - Codex Action - Official GitHub Action for running
codex execin CI with sandbox controls. - Codex Plugin for Claude Code - Official plugin to use Codex from Claude Code for code reviews and task delegation.
Getting Started
- DataCamp Tutorial - Beginner-friendly walkthrough with screenshots. Good first read.
- Blott Studio Guide - Practical getting-started guide focused on real development workflow.
- Medium Quick Setup - 2-minute install-to-first-prompt guide. No fluff.
- OpenReplay Integration Guide - How to weave Codex into an existing dev workflow.
- Machine Learning Mastery - Command reference with examples for each mode.
AGENTS.md Templates
Project-level instruction files that tell Codex how to work with your codebase - the equivalent of Claude Code's CLAUDE.md.
- agents.md (Open Standard) - The cross-agent standard used by 20k+ projects. Works with Codex, Claude Code, Gemini CLI, and more.
- codex-cli-best-practice - Battle-tested AGENTS.md patterns with sandbox mode recommendations and approval policies.
- claude-codex-settings - Dual AGENTS.md + CLAUDE.md setup for teams running both agents side-by-side.
- caliber-ai-org/ai-setup - Cross-tool config generator - outputs AGENTS.md, CLAUDE.md, and .cursorrules from one source.
- agentsmd/agents.md - The open AGENTS.md specification under Linux Foundation. 60k+ adopting projects.
- Ischca/awesome-agents-md - Curated list of real-world AGENTS.md files, templates, guides, and tools for Codex-based agents.
- danielrosehill/Agents.md-Templates - Collection of AGENTS.md templates following the standard suggested by OpenAI.
Subagents
Multi-agent orchestration with .toml definitions. Codex supports parallel fan-out with up to 6 threads by default.
Collections
- VoltAgent/awesome-codex-subagents - The definitive collection. 136+ agents across 10 categories (core dev, language specialists, infra, security, data/AI, DX, domains, business, meta, orchestration). Just clone and use.
- betterup/codex-cli-subagents - Enterprise-focused agents for code review, migration, and compliance.
Specialized Subagents
- leonardsellem/codex-specialized-subagents - Niche agents: accessibility auditor, i18n extractor, performance profiler. Fills gaps VoltAgent doesn't cover.
- CoderMageFox/claudecode-codex-subagents - Agents that work across both Codex and Claude Code. Good for mixed teams.
- [Alexin09/cc-subagent-codex](https://github.com/Alexin09/cc-subage
