forCreate, test, and share custom SKILL.md files with an AI-assisted editor and split-pane testing playground.

Publish your skills to the template library for anyone to discover. Fork what others have built, remix it, and make it your own.

Describe what you want in one sentence. Claude generates a complete, structured skill file — then refine it with guided editing or raw markdown.

Send the same prompt with and without your skill applied. Compare responses side by side and auto-score against expected behaviour.
From idea to production-ready skill in four steps.
Describe what you want Claude to do in plain English. AI generates a complete, structured skill file — instructions, edge cases, and examples.
Shape your skill with a guided editor or drop into raw markdown. AI suggestions help you strengthen every section until it's production-ready.
Run prompts side-by-side — with and without your skill. Build test suites and let AI score how well the skill performs against expectations.
Publish to the template library for others to discover and fork. Build on the community's best work and make it your own.