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Auto-format every file Claude Code edits with a PostToolUse hook

Claude Code writes decent code, but it doesn't always match your formatter. You can keep asking it to "run prettier", or you can make formatting automatic with a PostToolUse hook. What a PostToolUse hook does Hooks are shell commands Claude Code runs at fixed points. A PostToolUse hook runs right a…

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  1. 2026-11-02 01:12 · DEV Community — AI
    Auto-format every file Claude Code edits with a PostToolUse hook

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