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By agent · Codex

Codex skills: 1008 worth installing

Skills in the open SKILL.md format that Codex reads. Each one has a plain-language summary and the command to install it.

Installing a skill in Codex

$ npx skills add <author>/<skill> --agent codex

Replace the placeholder with the author and skill name from the skill's page. Start a new Codex session afterwards so the skill is picked up.

Skills for Codex

All skills

WinUI App

OpenAIOfficial

Bootstraps and develops WinUI 3 desktop applications with C# and the Windows App SDK.

DevelopmentGitHub stars: 27.8kInstalls: 2.9k

Yeet

OpenAIOfficial

Stages, commits, pushes and opens a GitHub pull request in one flow with the gh CLI.

DevelopmentGitHub stars: 27.8kInstalls: 3.2k

Imagegen

OpenAIOfficial

Generates and edits raster images such as photos, illustrations, sprites and mockups.

DesignGitHub stars: 27.8kInstalls: 5.1k

Plugin Creator

OpenAIOfficial

Scaffolds a Codex plugin directory with its plugin.json and optional folders.

DevelopmentGitHub stars: 27.8kInstalls: 2.3k

Skill Creator (OpenAI)

OpenAIOfficialAudit warning

Guides the creation of Codex skills that add specialised knowledge, workflows or tool integrations.

DevelopmentGitHub stars: 27.8kInstalls: 4.5k

Skill Installer

OpenAIOfficialAudit warning

Installs Codex skills from a curated list or a GitHub repo path.

DevelopmentGitHub stars: 27.8kInstalls: 3.5k

Analyses an article, finds where visuals would help and generates illustrations by type, style and palette.

DesignGitHub stars: 26.2kInstalls: 31.5k

Baoyu Comic

Jim Liu 宝玉

Creates original educational comics with detailed panel layouts in several art styles and tones.

DesignGitHub stars: 26.2kInstalls: 29.5k

Baoyu Compress Image

Jim Liu 宝玉

Compresses images to WebP or PNG, choosing the compression tool automatically.

DesignGitHub stars: 26.2kInstalls: 27.9k

Baoyu Cover Image

Jim Liu 宝玉

Generates article cover images across type, palette, rendering, text and mood, in cinematic, widescreen or square formats.

DesignGitHub stars: 26.2kInstalls: 31.7k

Baoyu Diagram

Jim Liu 宝玉

Creates dark-themed SVG diagrams: architecture diagrams, flowcharts, sequence diagrams, mind maps and timelines.

DesignGitHub stars: 26.2kInstalls: 14.8k

Baoyu Format Markdown

Jim Liu 宝玉

Formats plain text or markdown with frontmatter, titles, summaries, headings, lists and code blocks.

WritingGitHub stars: 26.2kInstalls: 27.8k

Baoyu Image Gen

Jim Liu 宝玉Audit warning

Generates images through OpenAI, Google, OpenRouter, Replicate and other image APIs, with reference images and batch generation.

DesignGitHub stars: 26.2kInstalls: 33.1k

Baoyu Infographic

Jim Liu 宝玉

Generates infographics from content, recommending a combination from 21 layout types and 22 visual styles.

DesignGitHub stars: 26.2kInstalls: 32.3k

Converts Markdown to styled HTML with WeChat-compatible themes, code highlighting, math and Mermaid diagrams.

WritingGitHub stars: 26.2kInstalls: 31.9k

Baoyu Post to WeChat

Jim Liu 宝玉Audit warning

Posts articles and image posts to a WeChat Official Account through the API or Chrome.

Marketing and SEOGitHub stars: 26.2kInstalls: 34.1k

Baoyu Post to X

Jim Liu 宝玉Audit warning

Posts to X, including regular posts with images or video and long-form X Articles written in Markdown.

Marketing and SEOGitHub stars: 26.2kInstalls: 28.6k

Baoyu Slide Deck

Jim Liu 宝玉

Generates a slide deck as images: writes an outline with style instructions, then renders each slide.

DocumentsGitHub stars: 26.2kInstalls: 30.7k

Baoyu Translate

Jim Liu 宝玉Audit warning

Translates articles between languages, including Chinese and English, with a refined multi-pass mode.

WritingGitHub stars: 26.2kInstalls: 25.1k

Baoyu URL to Markdown

Jim Liu 宝玉Audit warning

Fetches any URL and converts it to markdown through Chrome, with adapters for X, YouTube transcripts and Hacker News.

DataGitHub stars: 26.2kInstalls: 30k

Baoyu XHS Images

Jim Liu 宝玉

Breaks content into a series of up to ten cartoon-style image cards for Xiaohongshu and other social media.

DesignGitHub stars: 26.2kInstalls: 31k

Downloads YouTube transcripts and cover images by URL or video ID, with translation, chapters and speaker identification.

Video and mediaGitHub stars: 26.2kInstalls: 20.9k

Walks developers through the Google Ads API quickstart: credentials, client libraries and a first campaign query.

Marketing and SEOGitHub stars: 20.6kInstalls: 5.1k

Creates reports from Google Analytics properties with the Analytics Data API.

DataGitHub stars: 20.6kInstalls: 5.9k

Questions

Codex and skills.

Do Claude skills work in Codex?

Often. A skill is a folder of instructions and scripts in the open SKILL.md format, which Codex reads. A skill that depends on tools only one agent provides will not carry over, so read the skill's source before you rely on it.

How do I install a skill in Codex?

Each skill page has an install command. Run it in a terminal, then start a new Codex session so the skill is picked up.

What is the difference between a skill and an instructions file such as AGENTS.md?

An instructions file is loaded in every session and describes the project. A skill is loaded only when a task calls for it, so it can be long and specific without costing context on every turn.

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