Plugin Eval — Agent Skill by OpenAI

From the author

Help engineers evaluate a local skill or plugin, explain why it scored that way, show what to fix first, measure real token usage, benchmark starter scenarios, or decide what to run next. Use when the user says things like "evaluate this skill", "give me an analysis of the game dev skill", "why did this score that way", "what should I fix first", "measure the real token usage of this skill", or "what should I run next?".

— the description by OpenAI Codex

Install

Get the skill from its source (we cannot redistribute it):
https://github.com/openai/plugins/tree/d420d13051bffe4543ed39e30fa46b87148e47dd/plugins/plugin-eval/skills/plugin-eval

Documentation by OpenAI Codex

The licence of this skill does not allow us to copy its documentation. Read it at the source

Files

SKILL.md(opens on GitHub)Not mirrored: opens on GitHub4.2 KiB
agents/openai.yaml(opens on GitHub)Not mirrored: opens on GitHub107 B

Requirements and compatibility

Written for: OpenAI Codex

Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Security

No issues found by our static scan· No issues found

A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.

Setup Matt Pocock Skills
Matt Pocock· Community
Initializes repository configuration for Matt Pocock's engineering agent skills.
Agent toolingClaude CodeClaude appsOpenAI Codex+14 more
MITGitHub stars of the source repository317.5k
Writing For Agents
Matt Pocock· Community
A framework for writing effective, maintainable documentation and skill definitions for AI agents.
Agent toolingClaude CodeClaude appsOpenAI Codex+14 more
MITGitHub stars of the source repository317.5k
Loop Me
Matt Pocock· Community
A systematic grilling process to define and document recurring workflow specifications.
Agent toolingClaude CodeClaude appsOpenAI Codex+14 more
MITGitHub stars of the source repository317.5k
Writing Skills
Jesse Vincent (obra)· Community
A Test-Driven Development framework for creating, verifying, and maintaining robust agent skills.
Agent toolingClaude CodeClaude appsOpenAI Codex+14 more
MITLow riskHas scriptsGitHub stars of the source repository314k
Diagnosing Superpowers
Jesse Vincent (obra)· Community
A systematic workflow for investigating and reporting issues within AI agent sessions.
Agent toolingClaude CodeClaude appsOpenAI Codex+14 more
MITGitHub stars of the source repository314k
Skill Creator
AnthropicOfficial
A comprehensive framework for building, testing, evaluating, and optimizing AI agent skills.
Agent toolingClaude CodeClaude appsOpenAI Codex+14 more
Apache-2.0Low riskHas scriptsGitHub stars of the source repository188.6k