Agent Skill Builder
Build Claude or Codex SKILL.md files from Markdown drafts in your browser.
File target
SKILL.md
Privacy
No external AI API is called. Your Markdown is cleaned in this browser tab.
Frontmatter ready
Name and description are emitted as deterministic YAML frontmatter.
Body ready
The generated Markdown includes a title plus When to Use and Instructions sections.
Local cleanup rules
- Existing frontmatter is removed before new skill frontmatter is added.
- Line endings and repeated blank lines are normalized.
- The first H1 becomes the display title when the draft already has one.