The basic Skill Builder is for newbies. This is the vault: non-obvious, battle-tested SKILL.md files the power users actually run. Pick one, copy it, drop it in.
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SKILL.md
How to use it: save as .claude/skills/<name>/SKILL.md in your repo (or paste into a Project's instructions). Claude loads it on demand when the task matches the description — you don't have to invoke it manually.
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