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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 14 Oct 2026
One change · claude-code

React to events with a mod changedplugins/mods/events

Nearest release: v2.1.300, published an hour before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 14 Oct 2026 16:21 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 14 Oct 2026 16:37 UTC.

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First seen 1 Oct 2026 this site's first read of the page
Recorded edits13to this page, all time

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229229To stop a prompt, return `{ drop: 'the reason' }` without calling `next`. The text goes back into the user's prompt input, and they see `Prompt dropped by a hook:` followed by your reason, so address the reason to them. If your hook returns a `drop` after its `next(e)` call let the prompt through, the turn still runs, and the hook [fails](#handle-a-hook-that-fails) with a message that includes `a drop after its next() was answered`.
230230 
231[Other events](/docs/en/plugins/mods/reference#prompts-and-what-claude-reads) cover the rest of what Claude reads: `prompt.section` for each section of the system prompt, `prompt.context` for the context sent with the first message, and `skill.prompt` for a skill's text. Text from these hooks that changes between requests [invalidates the prompt cache](/docs/en/prompt-caching).
231[Other events](/docs/en/plugins/mods/reference#prompts-and-what-claude-reads) cover the rest of what Claude reads: `prompt.section` for each section of the system prompt, `prompt.context` for the context sent with the first message, and `skill.prompt` for a skill's text. Text from these hooks that changes between requests [invalidates the prompt cache](/docs/en/prompt-caching). In a `skill.prompt` hook, you can also read [which plugin or file the skill came from](/docs/en/plugins/mods/reference#skill-prompt-fields).
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233233### Follow a turn
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