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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 30 Sep 2026
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Hooks reference changedhooks

Nearest release: v2.1.285, published 10 hours 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 30 Sep 2026 04:31 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 30 Sep 2026 04:37 UTC.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits112to this page, all time

The whole hunk

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290290 
291291A matcher on the regular-expression path is tested with JavaScript's `RegExp.prototype.test`, which succeeds on a match anywhere in the value. `Edit.*` matches both `Edit` and `NotebookEdit`; wrap the pattern in `^` and `$`, as in `^Edit$`, when you need a whole-string match.
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293Hyphens in the exact-match set require Claude Code v2.1.195 or later. On earlier versions a hyphenated name like `code-reviewer` is evaluated as an unanchored regular expression, so it also fires for `senior-code-reviewer`; anchor it as `^code-reviewer$` on those versions to match only that name.
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295293`FileChanged` and `StopFailure` use a narrower exact-match set of letters, digits, `_`, and `|` only. A hyphen, space, or comma in a matcher for those two events keeps it on the regular-expression path, and only `|` separates alternatives. Every other event with matcher support in the table that follows accepts `|` or `,`.
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297295The `FileChanged` event doesn't follow these rules when building its watch list. See [FileChanged](#filechanged).
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363361* `mcp__memory__.*` matches all tools from the `memory` server
364362* `mcp__brave-search__.*` matches all tools from a server whose name contains a hyphen
365363* `mcp__.*__write.*` matches any tool whose name starts with `write` from any server
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367Hyphens in the exact-match set require Claude Code v2.1.195 or later. On earlier versions a bare hyphenated prefix like `mcp__brave-search` is evaluated as an unanchored regular expression and matches every tool from that server. The `mcp__brave-search__.*` form works on every version.
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369365Tools from a [plugin-bundled MCP server](/docs/en/mcp#plugin-provided-mcp-servers) use a scoped server segment that includes the plugin name: `mcp__plugin_<plugin-name>_<server-name>__<tool>`. A matcher written against the bare server key never fires for these tools. For a plugin named `my-plugin` that bundles a server under the key `db`, a `query` tool appears as `mcp__plugin_my-plugin_db__query`, so the matcher for every tool from that server is `mcp__plugin_my-plugin_db__.*`. Use the same scoped tool name in a handler's [`if` field](#common-fields). See [Plugin-provided MCP servers](/docs/en/mcp#plugin-provided-mcp-servers) for how the scoped name is built.
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