← LibraryBuilder · B6
Frontmatter anatomy
Build-along · ~8 min at your own keyboard
Only a skill's frontmatter (name + description) loads until the skill fires. The description is how Claude decides WHEN to use it. A vague description means your skill never triggers or triggers constantly. Write it like a dispatcher: 'use when X, not when Y.'
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Paste your before/after description and the four routing test results.