SkillCheck (Free)

Check skills against Anthropic guidelines and the agentskills specification. This file contains Free tier validation rules.

Want deeper analysis? Upgrade to Pro for anti-slop detection, security scanning, token optimization, WCAG compliance, enterprise checks, and Eval Kit (auto-generated test prompts for your skills).

Prerequisites

• Any AI assistant with file Read capability (Claude Code, Cursor, Windsurf, Codex CLI)
• Works on any platform (Unix/macOS/Windows)
• No special tools required (Read-only)

How to Check a Skill

1. Locate: Find target SKILL.md file(s)
2. Read: Load the content
3. Validate: Apply each rule section below
4. Report: List issues found with severity and fixes