Escape generic AI-generated UIs. Forces a bold, distinctive design direction before any code is written.
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Top Skills for Codex CLI
On Codex CLI the picks are frontend-design, docling and superpowers — the same shape of work as Claude Code, since Codex is also terminal-first with a real shell. Roughly a quarter of the catalogue is verified here, so the useful question on this page is not what exists but what has been tested: every entry below was either run on Codex or ships a Codex-specific install path documented by its publisher.
About Codex CLI
Codex CLI is OpenAI's coding agent CLI — terminal-first like Claude Code — and it adopted the SKILL.md spec verbatim in December 2025. Skills on Codex CLI load the same way Anthropic Skills do, with the same frontmatter schema, but run against an OpenAI model (GPT-5 family) instead of Claude.
The install model mirrors Claude Code: Skills live as folders under ~/.codex/skills/ (user-wide) or .codex/skills/ (project-scoped). Many Claude-targeted Skills run cleanly on Codex with no changes; some need minor adjustments where they assume Claude-specific tool names or system-prompt conventions. The CLI also supports Workflows for multi-agent orchestration similar to Claude Code's.
Codex CLI is the right Skill target for teams already standardized on OpenAI infrastructure who want SKILL.md-driven workflows. Composite scoring weights cross-agent verification — Skills tested in both Codex and Claude Code rank above single-target Skills.
Verified for this agent
Best Skills for Codex
Every skill below is verified to work with Codex CLI. Ranked by composite score.
WordPress’s own answer to agents writing pre-Gutenberg code: blocks, block themes, plugins, the modern APIs.
One skill covering every document format the category exists for — including scanned PDFs and RAG chunking — from the maintainers of the parser itself.
1,234+ skills in one bundle. Single install across AI coding assistants.
Programmatic video done right. Idiomatic Remotion patterns auto-activate when detected.
The jobs, not the endpoints: migrate a live site, connect the domain, keep WordPress patched.
Structured multi-step development. Brainstorm → spec → plan → build → review → merge — TDD baked in.
Firebase-authored. Init, configure, and one-step deploy to Firebase Hosting / App Hosting.
Resend's own API skill: send transactional and batch email, handle inbound webhooks, and manage domains, templates, and keys.
Resend's deliverability playbook: SPF/DKIM/DMARC, spam avoidance, bounce handling, and CAN-SPAM/GDPR/CASL compliance.
Build cross-client HTML emails as React components, with a visual editor and Resend-ready rendering.
Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email.
Deploy and register the domain in the same session — Zeabur is its own registrar, so both are one CLI.
The only vendor-official skill from a major diagramming product — and it emits editable .drawio files rather than a throwaway image.
The registrar half of the stack: buy the domain, set the DNS, stand up the site — from one plugin.
1,000+ SaaS integrations as one skill. OAuth lifecycle, scoped credentials, structured actions.
Open-source marketing stack for AI coding agents. SEO, content, email, ads, analytics in one bundle.
Full-stack WorkOS implementation with auth provider migration paths.
Drop-in WorkOS widgets with backend token wiring across every major framework.
Paddle's own integration playbook: ten skills for Checkout, webhooks, pricing pages, and subscription lifecycle on the merchant-of-record platform.
Twilio's official Developer Kit: 55 skills across SMS, WhatsApp, Voice, Verify, SendGrid, and compliance — plus the Twilio MCP. Public beta.
Self-contained HTML artifacts with React + shadcn/ui — no build step, just paste and run.
Extract, fill, merge. PDF manipulation with bundled scripts so Claude does not waste tokens generating them.
Pre-handoff a11y audit that catches what design QA misses.
Supabase done right. RLS policies, edge functions, realtime, auth — in idiomatic patterns.
Neon serverless Postgres done right — branching, pooling, and scale-to-zero, from Neon.
Stripe done right. Checkout, subscriptions, webhooks, idempotency, metered billing.
Shopify Storefront API: cart, checkout, metafields, customer accounts, Hydrogen patterns.
OpenAI's chart-design skill: the judgement layer that decides which chart the question actually needs before any plotting code is written.
Dashboards with source definitions and a QA step — the parts that separate a monitoring view from a wall of charts nobody trusts.
ADR authoring + design review. Trade-offs, consequences, alternatives.
Disciplined debugging loop. Reproduce, isolate, diagnose, fix.
The pre-ship checklist that catches the embarrassing stuff.
Technical writing that engineers will actually read and update.
Incident triage + comms + blameless postmortem in one harness.
System design from requirements. APIs, data, boundaries, scale.
Honest tech-debt audit with a prioritized cleanup backlog.
Layered test plan sized to the change's risk profile.
GitGuardian's own secret-detection skill — scans history, images and packages, and ships a written remediation doctrine rather than just a list of hits.
100+ accessibility and UX rules from Vercel, applied as a structural audit on your UI code.
57 React/Next.js performance rules, applied as a structural review on your code.
Security audits run by a real security firm. CodeQL + Semgrep + audit workflows.
Web scraping, search, and browser automation built to be agent-friendly.
Prisma migrations and queries by the book. Index-aware, migration-safe, type-correct.
Caching without the bugs. Invalidation, write-through, cache-aside, distributed locks.
Next.js App Router by the book. Server components, streaming, parallel routes.
Notion API: page/database CRUD, block hierarchies, rich text, schema sync.
Sentry the right way. Source maps, releases, breadcrumbs, performance, structured tags.
20 SEO + GEO skills in one bundle. Keyword research, audits, rank tracking, AI search optimization.
232+ skills across engineering, marketing, product, compliance, advisory.
TDD with red/green/refactor as a concrete TypeScript walkthrough.
Web search + 36 authoritative data sources. SEC, PubMed, ChEMBL, FRED — agent-grade research.
32+ marketing skills in one bundle. CRO, copywriting, SEO, analytics, email, growth.
Strip the AI tells. Multi-pass editing for content that reads opinionated, not generated.
C4, deployment, sequence-of-events architecture diagrams generated from natural-language descriptions.
By use case
Codex skills, cut by category
Which Codex Skills are verified in each category, and which are not.
- Top Code Quality & Review Skills for Codex →
The 11 code review agent Skills with verified Codex compatibility, ranked by composite score, with the install command for Codex and what is not verified there yet.
- Top Frontend & UI Design Skills for Codex →
The 10 frontend & ui agent Skills with verified Codex compatibility, ranked by composite score, with the install command for Codex and what is not verified there yet.
- Top AI/ML & Agent Tooling Skills for Codex →
The 7 ai agent tooling agent Skills with verified Codex compatibility, ranked by composite score, with the install command for Codex and what is not verified there yet.
- Top APIs & Integrations Skills for Codex →
The 6 apis & integrations agent Skills with verified Codex compatibility, ranked by composite score, with the install command for Codex and what is not verified there yet.
- Top Communication & Docs Skills for Codex →
The 6 comms & docs agent Skills with verified Codex compatibility, ranked by composite score, with the install command for Codex and what is not verified there yet.
- Top DevOps & Infrastructure Skills for Codex →
The 8 devops agent Skills with verified Codex compatibility, ranked by composite score, with the install command for Codex and what is not verified there yet.
FAQ
Frequently asked
How do I install a Skill on Codex CLI?
Drop the Skill folder under ~/.codex/skills/ for user-wide or .codex/skills/ for project-scoped. Codex loads SKILL.md the same way Claude Code does.
Do Claude Skills work on Codex CLI?
Most do — the SKILL.md spec is the same. Skills that hardcode Claude-specific tool names or assume Claude system-prompt conventions may need minor adjustments.
Which model does Codex CLI use?
GPT-5 family by default. Skill performance varies between model tiers; the best Codex-targeted Skills are tuned for the specific model.
Does Codex CLI support Workflows?
Yes — Codex has a Workflow primitive for multi-agent orchestration similar to Claude Code's. Skills can be invoked from within Workflows.
Is Codex CLI free?
The CLI itself is free; usage is billed against your OpenAI API account.
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