OpenAgentSkill
GitHub200+

Platform shortlist

Best Agent Skills for Codex

A focused guide for builders using Codex-style coding agents: repository inspection, issue triage, implementation planning, testing, and browser verification skills.

Find skills for this taskRun resolve APIView use caseAgent API docs

Decision prompt

I need Codex skills for repository analysis, patching code, reviewing pull requests, and verifying changes before shipping.

11
Shortlist
best
Intent
CodexCoding agentsSource-based selection · not a runtime test

Published by OpenAgentSkill. Candidates are matched to this guide from available registry metadata. Repository stars describe popularity, not task success or safety. Check each source, license and current review before installing.

Recommended shortlist

Start with these skills

Task-matched candidates · not exhaustive
Adopt100/100
GitHub

Repository analysis, pull request review, issue triage, and release workflow automation.

Stars18K
Trust78/100
Audit86/100
Quality100/100
RiskSafe to try
Claude CodeOpenAI AgentsCursor
$ npx skills add github/docs
Adopt100/100
Webapp Testing

Use Playwright to interact with and test local web applications, capture screenshots, debug UI behavior, and inspect browser logs.

Stars163K
Trust87/100
Audit89/100
Quality100/100
RiskSafe to try
Claude CodeOpenAI AgentsCursor
$ npx skills add anthropics/skills --skill webapp-testing
Adopt100/100
Equity Research Earnings Analysis

Create a structured post-earnings equity research update with key metrics, estimate changes, charts, and thesis review.

Stars34K
Trust83/100
Audit90/100
Quality100/100
RiskNeeds review
Claude CodeOpenAI AgentsFinance and quant
$ npx -y skills add anthropics/financial-services --skill earnings-analysis
Adopt100/100
Portfolio Monitoring

Review portfolio-company financial packages, flag variance to plan, and prepare monitored KPI summaries.

Stars34K
Trust83/100
Audit89/100
Quality100/100
RiskNeeds review
Claude CodeOpenAI AgentsFinance and quant
$ npx -y skills add anthropics/financial-services --skill portfolio-monitoring

How to use this guide

Move from search to adoption

01

Choose a narrow job

Start with one workflow such as PR review, route debugging, or UI smoke testing.

02

Ask the recommendation API

Use the task prompt on this page to generate a ranked plan from the current marketplace.

03

Validate before adding to your default agent setup

Compare the top skill against at least one fallback and inspect repository permissions.

Evaluation notes

What to check before installing

The Codex buying criterion

A useful Codex skill should compress a real engineering loop: understand context, make a scoped change, verify behavior, and explain the result.

  • +Look for skills that include verification, not just generation.
  • +Favor installable workflows over vague prompt packs.
  • +Use the readiness score to decide whether to adopt, shortlist, or prototype.

Where Codex skills create leverage

The highest-value use cases are repetitive engineering chores: PR review, test generation, repo summaries, bug triage, and release note drafting.

  • +Use repository-aware skills for codebase onboarding.
  • +Use browser and testing skills to verify product behavior.
  • +Use GitHub automation skills for recurring team workflows.

FAQ

Common questions

Can Codex use the same skills as Claude Code?

Often yes, but the right choice depends on the workflow, install path, and permissions. Use the decision page to validate each skill before adoption.

Why does the guide include browser and GitHub skills?

Coding agents become more useful when they can verify UI behavior and inspect repository context, not only write code.

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Next guides

Keep building the workflow

Installation guide

Install in Codex

A step-by-step workflow for adding install-ready skills to a Codex-style agent setup while keeping validation, permissions, and rollback in mind.

Platform shortlist

Claude Code skills

A practical shortlist of skills for Claude Code users who want stronger repository analysis, repeatable coding workflows, browser checks, and agent-ready implementation plans.

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