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816816## Evaluate and iterate on a skill
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818Seeing a skill trigger tells you Claude found it, not that it did what you intended. To know a skill is working, measure two things separately: whether Claude invokes it on the prompts it should, and whether the output matches what you expect when it does.
818Seeing a skill trigger tells you Claude found it, not that it did what you intended. To know a skill is working, measure separately whether Claude invokes it on the prompts it should, and whether the output matches what you expect when it does.
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820820The check for both is a baseline comparison. Collect a few realistic prompts, run each one in a fresh session with the skill available and again with it [disabled](#override-skill-visibility-from-settings), and compare the results. A fresh session matters because leftover context from authoring the skill will mask gaps in the written instructions.
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