Best skills for Codex
Codex is OpenAI's agentic coding tool — you run it from the command line and it plans, edits files and executes tasks across your project. Skills are what make those runs dependable on a specific job. A skill is a reusable SKILL.md instruction set; with Codex you give it to the agent as its working instructions, so it follows the same vetted steps every time — automating a browser, reviewing a spec, generating a test suite or shipping a refactor.
This page ranks the best Codex skills available right now. We recompute the ranking continuously from three signals: an automated quality score of each skill, its GitHub star count, and a security review that pushes risky-permission skills down and out of the top. Safe, well-documented, widely-starred skills come first. No single signal wins on its own: a heavily-starred skill with a thin or unsafe SKILL.md still ranks below a well-built, security-checked one.
The top picks are led by development skills — refactoring, code review, automation — followed by productivity and data & AI, with testing, documentation and DevOps entries too. Each skill page below explains what the skill does, its difficulty level, and how to run it with Codex.
Most of these skills are portable: the same SKILL.md usually drops straight into Claude Code, Cursor or Windsurf — check the platform badges on each card. Because we re-score the catalogue continuously as fresh skills are pulled and vetted, today's top pick may not hold next month. Bookmark this page if you want the current answer rather than a stale one.
24 skills selected
Character Design Sheet
Content
Creates consistent character designs across AI-generated images using reference sheets, turnaround views, expression sheets, and color palettes. Leverages the inference.sh CLI to generate character concepts and maintain visual identity through techniques like FLUX LoRA training and detailed description anchoring. Useful for character design, game art, illustration, animation, comics, and visual novels.
Project Technical Writing
Documentation
Guides technical writing to match the project's established voice and style. Use when creating or editing READMEs, ADRs, Swift doc comments, or reviewing documentation for consistency. Enforces a pragmatic, direct, developer-to-developer tone while avoiding AI-isms and hedging.
Dynamic Needs System
Development
Dynamic needs system that fluctuates over time and drives character behavior. Standard needs include hunger, energy, fun, social, comfort, and bladder, each with decay rates and satisfying actions. Low needs create urgency and can interrupt other activities, with inner voice comments reflecting the character's mental state.
CE Plugin Audit & Compliance
Development
Audits CE plugin implementations against registry trust rules, metadata validity, and ADR contract compliance. Checks required plugin_meta fields, capability tags, interval calibrator protocol, and core API boundary imports. Helps when certifying third-party plugins or validating conformance before integration.
Stripe Payment Management via CLI
Development
Manage Stripe payments from the terminal: check balance, create payment links, manage customers, invoices, refunds, and subscriptions. Helps developers interact with Stripe without leaving the command line.
SDD Commit & PR Guidelines
Development
This skill guides the creation of structured commit messages following Conventional Commits and provides a pull request template. It helps maintain consistent project history and clear documentation of changes. Use it when committing code or creating PRs to ensure all changes are properly described.
Textum: PRD→Scaffold→Story workflow
Development
This skill implements a multi-stage workflow that transforms a product requirements document (PRD) into a scaffold (global context) and then into executable stories, with low-noise outputs and mandatory gate checks at each stage. It supports 16 distinct stages from PRD planning through story execution, and accepts Chinese commands for routing between stages. Useful when you need a disciplined, low-noise progression from high-level requirements to concrete, executable tasks.
Datalog Query
Data & AI
Queries janus-datalog databases using the `datalog` CLI for debugging and data exploration. Enables inspecting datoms, entity attributes, or CRDT storage state via EDN queries. Helps understand unknown database schemas and visualize transaction history.
Browser Automation with playwright-cli
Testing
Automate browser interactions using playwright-cli commands. Supports navigation, clicking, form filling, screenshots, data extraction, and multi-tab management. Ideal for web testing, scraping, and automating repetitive web tasks.
Add Background Music to Videos
Content
Adds background music to videos using royalty-free sources like Pixabay Music. Provides FFmpeg commands for mixing audio, adjusting volume levels, and adding fade-in/out effects. Useful when you need to enhance a video with background music while keeping voiceover clear.
Domain-Driven Design (DDD)
Development
Provides expert guidance on implementing Domain-Driven Design (DDD) patterns including bounded contexts, aggregates, value objects, and domain events. Helps model complex business domains, establish a ubiquitous language, and design strategic context maps to align software architecture with business logic.
Voice DNA Creator
Content
Analyzes writing samples to create a comprehensive voice DNA profile that AI can use to replicate your authentic style. Useful when setting up a new writing system, creating client profiles for ghostwriting, or updating a voice after style evolution.
CSS Architecture
Development
Expertise in CSS architecture covering methodologies (BEM, ITCSS, CUBE CSS), CSS Modules, Tailwind CSS, CSS-in-JS (styled-components, Emotion), and design tokens. Helps when choosing a methodology, configuring Tailwind, implementing a token system, or diagnosing specificity wars and layout performance.
Git - Version Control
Development
Provides expert guidance for Git version control operations including commits, branches, merging, rebasing, conflict resolution, and Git workflows. Useful when working with Git repositories, version control, or collaborative development.
PyDESeq2: Differential Expression Analysis
Data & AI
Perform differential gene expression analysis from bulk RNA-seq count data using PyDESeq2, including Wald tests, multiple testing correction, and visualization.
UX Research Flow Audit
Testing
Audit user flows for friction and pain points. Use when reviewing a feature's UX, identifying drop-off risks, or getting actionable improvement recommendations based on industry best practices (Nielsen heuristics, Baymard benchmarks).
Obsidian CLI
Development
Interact with Obsidian vaults from the command line: read, create, search, and manage notes, tasks, properties, and more. Supports plugin and theme development with commands to reload plugins, capture errors, take screenshots, and inspect the DOM. Useful for automating vault operations or debugging Obsidian plugins and themes.
Command-Line Interface Development
Development
Provides expertise in building command-line interfaces: argument parsing, subcommands, interactive prompts, and CLI design patterns. Helps when creating CLI tools, utilities, or interactive terminal applications. Covers best practices across Go, Python, Node.js, Rust, and more.
Snipcart - E-commerce for Static Sites
Development
Add e-commerce to any static site with Snipcart's HTML-based shopping cart. No backend required—works with JAMstack, Astro, or plain HTML. Handles checkout, payments, shipping, taxes, and inventory.
Betaflight Tuning Tool Codebase Guide
Development
Complete operational guide for the Betaflight flight controller tuning tool codebase. Includes file map, commands, and coding patterns.
Prepare Changelog for Release
Documentation
Updates the CHANGELOG.md file by replacing the [Unreleased] section with the current plugin version and date, then adds a new empty [Unreleased] section. Use when finalizing a release to prepare the changelog entries.
AI Situational Awareness
Security
Detects internal reasoning quality threats like hallucination risk, scope creep, and context degradation using adapted Cooper color codes and OODA loop decision-making. Helps maintain awareness during complex or unfamiliar tasks and before high-stakes outputs.
Douyin Search & Analytics Tool
Data & AI
Analyze public Douyin data: keyword search, user content scraping, and real-time hot trends. Ideal for short-video marketing and competitor analysis.
Humanizer: Remove AI Writing Patterns
Content
Remove signs of AI-generated writing to make text sound more natural. Detects and fixes common AI patterns while preserving meaning.
How to choose
- How are these skills selected?
- Each skill is curated and verified by the Skills Guides editorial team. We run a security and quality review on every entry, so only verified skills appear in this selection.
- What do the security ratings mean?
- We label skills Safe, Caution or Risky based on our security analysis — checking for prompt-injection risks, requested permissions and other red flags. The rating gives you an at-a-glance sense of how much trust a skill warrants.
- How do I install a skill?
- Open any skill page and follow its install instructions for your tool — Claude Code, Cursor or Copilot. Each skill lists the exact steps so you can get it running in a couple of minutes.