OpenAI Codex Skills

OpenAI Codex, OpenAI's coding agent, reads Agent Skills from its skills directory. SkillMD lists 396,271 safety-reviewed skills (SKILL.md files) you can use in OpenAI Codex free: search by task, install with one command, or copy the file into ./.codex/skills.

Install a skill in OpenAI Codex

CLI (recommended). Install the CLI once, then add any skill to OpenAI Codex by slug:

npm i -g skillmds@latest
skillmd add <owner>/<name> -a codex      # project scope → ./.codex/skills
skillmd add <owner>/<name> -a codex -g   # global scope  → ~/.codex/skills

Manual copy. Open any skill on SkillMD, download its SKILL.md, and save it as ./.codex/skills/<skill-name>/SKILL.md (or ~/.codex/skills/… for every project).
MCP server. If OpenAI Codex supports MCP servers, connect the SkillMD server and ask the agent to search and install skills for you. Setup details: MCP docs.

Machine-readable version of this guide: /agents/codex.txt

Top skills for OpenAI Codex

anthropic

Frontend Design

Guides distinctive, intentional visual design for new UI or existing interfaces, covering aesthetic direction, typography, and avoiding templated defaults.

158k · bundle

anthropic

DOCX

Create, read, edit, and manipulate Word documents (.docx files) with formatting, tables, images, and tracked changes.

158k · bundle

anthropic

PPTX

Create, read, edit, and convert PowerPoint (.pptx) files with design guidance and visual QA workflows.

158k · bundle

anthropic

Skill Creator

Create new skills, modify existing ones, and measure their performance through iterative evaluation and benchmarking.

158k · bundle

anthropic

Canvas Design

Creates visual art in .png and .pdf documents by first generating a design philosophy and then expressing it on a canvas.

158k · bundle

anthropic

XLSX

Create, edit, and analyze spreadsheet files (.xlsx, .xlsm, .csv, .tsv) with formulas, formatting, and financial modeling conventions.

158k · bundle

anthropic

Web Artifacts Builder

Creates elaborate, multi-component HTML artifacts using React, Tailwind CSS, and shadcn/ui for complex frontend projects.

158k · bundle

microsoft

Azure AI

Integrate with Azure AI services including Search, Speech, OpenAI, and Document Intelligence for search, transcription, OCR, and text-to-speech tasks.

2.7k · bundle

alirezarezvani

Code Reviewer

Automates code review for pull requests across 14+ languages, analyzing complexity, risk, code quality, and generating structured review reports.

20.4k · bundle

kbarbel640-del

Deep Research

Plans and executes complex, multi-step research by decomposing questions, orchestrating subagents, and synthesizing findings into reports.

1 · bundle

anthropic

Theme Factory

Apply consistent, professional color palettes and font pairings to presentation slide decks and other artifacts using pre-set themes or custom on-the-fly generation.

158k · bundle

anthropic

Algorithmic Art

Create algorithmic art by first writing a generative philosophy, then expressing it as p5.js sketches with seeded randomness and interactive parameter exploration.

158k · bundle

alirezarezvani

Financial Analyst

Performs financial ratio analysis, DCF valuation, budget variance analysis, and rolling forecast construction for strategic decision-making using financial statements and spreadsheet data.

20.4k · bundle

cloudflare-security-audit

Security Audit

Finds exploitable vulnerabilities in codebases through a structured multi-phase audit covering recon, hunting, validation, and reporting.

· bundle

alirezarezvani

Pulse

Synthesizes recent conversations about any topic across Reddit, Hacker News, the open web, and optionally X/Twitter into a single briefing with citations, engagement metrics, and cross-platform pattern analysis.

20.4k · bundle

obra

Using Superpowers

Ensures skills are invoked before any response, including clarifying questions, and establishes how to find and use skills.

247k · bundle

alirezarezvani

Caveman

Reduces token usage by ~75% by stripping filler words, articles, and pleasantries while preserving full technical accuracy. Activates on user commands like 'caveman mode' or 'be brief'.

20.4k · bundle

alirezarezvani

RAG Architect

Design, tune, and evaluate production RAG pipelines with deterministic tools for chunking, pipeline design, and retrieval evaluation.

20.4k · bundle

Browse all skills →

Frequently asked questions

Where does OpenAI Codex look for skills?

OpenAI Codex loads Agent Skills from ./.codex/skills inside a project and from ~/.codex/skills globally. Each skill lives in its own folder as <skill-name>/SKILL.md; the agent reads the skill's description and applies it when a request matches.

How do I install a skill in OpenAI Codex?

Run npm i -g skillmds@latest once, then skillmd add <owner>/<name> -a codex in your project (add -g for global scope). The CLI writes the SKILL.md into .codex/skills for you. You can also copy the file by hand from any skill page on skillmd.com.

Do skills made for Claude Code work in OpenAI Codex?

Yes. SKILL.md is an open, agent-neutral format: the same file works across Claude Code, OpenAI Codex, Cursor, Codex, and 60+ other agents. Only the directory it lives in changes, and skillmd add -a codex handles that for you.

Skills for other agents