Claude Skill
A packaged set of instructions (and optionally scripts/resources) that extends what Claude can do for a particular task, invoked by name inside a conversation.
Skills let a vendor or user package domain-specific workflows — a deploy checklist, a data-analysis routine, a company's internal style guide — so Claude follows them consistently without the instructions being repeated in every prompt. Whether a vendor has published a Claude Skill for its own product is one of the concrete, checkable signals Crail records on every vendor page.
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