Agent skill · research science · aiskillstore
skill-judge
Evaluate Agent Skill design quality against official specifications and best practices. Use when reviewing, auditing, or improving SKILL.md files and skill packages. Provides multi-dimensional scoring and actionable improvement suggestions.
Why this skill is useful
Provides a structured evaluation framework that includes scoring and actionable suggestions for improving AI skills, which are not commonly found in public resources.
What it needs
About 12k tokens when loaded. Last updated 2026-08-07. 405 stars on the source repository.
What this skill does
Skill Judge Evaluate Agent Skills against official specifications and patterns derived from 17+ official examples. --- Core Philosophy What is a Skill? A Skill is NOT a tutorial. A Skill is a knowledge externalization mechanism. Traditional AI knowledge is locked in model parameters. To teach new capabilities: Skills change this: This is the paradigm shift from "training AI" to "educating AI" — like a hot-swappable LoRA adapter that requires no training. You edit a Markdown file in natural language, and the model's behavior changes. The Core Formula Good Skill = Expert-only Knowledge − What Claude Already Knows A Skill's value is measured by its knowledge delta — the gap between what it provides and what the model already knows. Expert-only knowledge: Decision trees, trade-offs, edge cases, anti-patterns, domain-specific thinking frameworks — things that take years of experience to accumulate What Claude already knows: Basic concepts, standard library usage, common programming patterns, general best practices When a Skill explains "what is PDF" or "how to write a for-loop", it's compressing knowledge Claude already has. This is token waste — context window is a public resource shared with system prompts, conversation history, other Skills, and user requests. Tool vs Skill Concept Essence Function Example --------- --------- ---------- --------- Tool What model CAN do Execute actions bash, readfile, writefile, WebSearch Skill What model KNOWS how to do Guide decisions PDF processing, MCP building, frontend design Tools define capability boundaries — without bash tool, model can't execute commands. Skills inject knowledge — without frontend-design Skill, model produces generic UI. The equation: Same Claude model, different Skills loaded, becomes different experts. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills aiskillstore/skill-judge