Hooks reference changedhooks
Nearest release: v2.1.250, published 6 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
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14981498### PreToolUse
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1500Runs after Claude creates tool parameters and before processing the tool call. Matches on tool name: `Bash`, `PowerShell`, `Edit`, `Write`, `Read`, `Glob`, `Grep`, `Agent`, `WebFetch`, `WebSearch`, `AskUserQuestion`, `ExitPlanMode`, and any [MCP tool names](#match-mcp-tools).
1500Runs after Claude creates tool parameters and before processing the tool call. Matches on any tool name except `EndConversation`: built-in tools such as `Bash`, `PowerShell`, `Edit`, `Write`, `Read`, `Glob`, `Grep`, `Agent`, `Workflow`, `WebFetch`, `WebSearch`, `AskUserQuestion`, and `ExitPlanMode`, and any [MCP tool names](#match-mcp-tools).
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15021502To run a hook when a specific file changes on disk, whatever wrote it, use [FileChanged](#filechanged) instead of matching file-editing tools by name. Unlike PreToolUse, Claude Code runs FileChanged hooks after the change, and they have no decision control, so they can't block the write.
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29332933| Matcher | When it fires |
29342934| :------- | :------------------------------------------- |
2935| `manual` | `/compact` |
2936| `auto`
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