SKILL.md Linter
Paste a Claude Code SKILL.md file below. Every check runs in your browser and shows a one-line why — the same checks our paid Skills Engineering Kit is built to pass.
Your input never leaves this page — analysis runs entirely in your browser, nothing is uploaded.
Want the full methodology?
This linter checks the shape of one file. The Skills Engineering Kit covers skill anatomy, description engineering, progressive disclosure, and a full testing methodology — plus this exact lint harness as a dependency-free bash script you can run in CI.
See the Skills Engineering Kit