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evaluate-plugin

Evaluate a local Codex plugin in engineer-friendly language. Use when the user says "evaluate this plugin", "audit this plugin", "why did this score that way", "what should I fix first", "help me benchmark this plugin", or asks for a plugin-wide report before comparing versions.

Stars
1,305
Source
openai/plugins
Updated
2026-05-30
Slug
openai--plugins--evaluate-plugin
View on GitHubRaw SKILL.md

// install — copy + paste into any project

mkdir -p .claude/skills && curl -fsSL https://raw.githubusercontent.com/openai/plugins/HEAD/plugins/plugin-eval/skills/evaluate-plugin/SKILL.md -o .claude/skills/evaluate-plugin.md

Drops the SKILL.md into .claude/skills/evaluate-plugin.md. Works with Claude Code, Cursor, and any agent that loads SKILL.md files from .claude/skills/.

Evaluate Plugin

Use this skill when the target is a plugin root with .codex-plugin/plugin.json.

Workflow

  1. Treat "Evaluate this plugin." as the default entrypoint.
  2. If the request comes in as natural chat language, use plugin-eval start <plugin-root> --request "<user request>" --format markdown first so the user sees the routed local path.
  3. Run plugin-eval analyze <plugin-root> --format markdown.
  4. Read Fix First before drilling into manifest findings, nested skill findings, and code or coverage details.
  5. If the plugin contains multiple skills, summarize the strongest and weakest ones explicitly.
  6. If the user wants measured usage, switch to "Help me benchmark this plugin." and use the starter benchmark flow.
  7. If the user wants trend data, compare two JSON outputs with plugin-eval compare.

Chat Requests To Recognize

  • Evaluate this plugin.
  • Audit this plugin.
  • Why did this score that way?
  • What should I fix first?
  • Help me benchmark this plugin.
  • What should I run next?

Commands

plugin-eval start <plugin-root> --request "Evaluate this plugin." --format markdown
plugin-eval analyze <plugin-root> --format markdown
plugin-eval start <plugin-root> --request "What should I run next?" --format markdown
plugin-eval compare before.json after.json
plugin-eval report result.json --format html --output ./plugin-eval-report.html
plugin-eval init-benchmark <plugin-root>
plugin-eval benchmark <plugin-root> --dry-run

Reference

  • ../../references/chat-first-workflows.md