Development Workflow Skills for OpenAI Codex
Skills that change how the agent works: planning, test-driven development, debugging, code review and git hygiene. Every listing below works with OpenAI Codex. Free GitHub projects and paid options are ranked together.
Updated October 2026 · 20 listings · stars refreshed daily from GitHub
How to add development workflow skills to OpenAI Codex
Skills follow the open Agent Skills format: a folder with a SKILL.md file. Copy the folder into the skills directory your app reads, then restart the session so the new description is picked up.
Superpowers 🧩 SkillFree
A skills library that makes coding agents plan, test-first and debug systematically
Matt Pocock's Skills 🧩 SkillOpen source
Small, composable engineering skills: grilling, TDD, specs, tickets and architecture review
Agent Skills (Addy Osmani) 🧩 SkillOpen source
25 lifecycle skills and commands that make agents spec, test, review and ship with discipline
Ponytail 🧩 SkillOpen source
Makes your coding agent write the minimum code a task needs, without cutting safety
Understand Anything 🧩 SkillOpen source
Turns a codebase into an interactive knowledge graph with tours, search and Q&A
Archify 🧩 SkillOpen source
Validated, interactive architecture, sequence and data-flow diagrams compiled from typed JSON
Caveman 🧩 SkillFree
Terse-output skill plus local proxy that trims the tokens coding agents write and read
Skill Seekers 🧩 SkillOpen source
Turns docs sites, repos, PDFs and videos into Agent Skills and RAG-ready knowledge
SpecStory 🧩 SkillFreemium
Saves AI coding sessions as local Markdown; Lore skill mines them into reusable skills
Agent Rules Books 🧩 SkillOpen source
Agent rules and skills distilled from Clean Code, Refactoring, DDD and other classic books
Pro Workflow 🧩 SkillOpen source
Self-correcting memory, research wikis and quality-gate hooks for Claude Code
TeaQL Agent Kit 🧩 SkillOpen source
Agent Skill that inserts a validated domain model between requirements and code
MEX 🧩 SkillOpen source
Team memory for engineers and their agents, kept in the repo and shared through Git
Open Steps 🧩 SkillFree
Turns your coding agent's technical output into plain-language reports and next steps
Skills Manager 🧩 SkillFree
Desktop app and CLI that keeps one skills library and symlinks it into 30+ AI coding tools
I Have ADHD 🧩 SkillOpen source
Output skill that makes coding agents lead with the next action, not filler
Agent Loop Skills 🧩 SkillOpen source
Verification-gated improvement loops as Agent Skills for ML, code, SQL, prompts and research
Advise Project Approach 🧩 SkillOpen source
Evidence-first project planning, course-correction and pre-ship review skill
Skill Flow 🧩 SkillOpen source
Install, manage and share Agent Skills across every major coding agent from one place
Repo Task Proof Loop 🧩 SkillOpen source
Spec-freeze, build, evidence and fresh-verify loop with repo-local task proof
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