How I Automated My Entire Claude Code Workflow with Hooks
Most Claude Code users think of hooks as an advanced feature they'll get to someday. After reading this deep-dive from the DEV Community, "someday" moves to tonight. The guide covers all 22 lifecycle hook events — from SessionStart and UserPromptSubmit through PreToolUse, PostToolUse, and PermissionRequest — and shows exactly how to wire each one as a deterministic shell command that runs without touching your prompts.
The author's flagship example is elegant in its simplicity: a single PostToolUse hook that runs Prettier automatically on every file Claude edits. That one three-minute setup eliminated roughly 20 manual format commands per day. The piece also draws a sharp line between hooks and MCP — hooks constrain and automate Claude's behavior from the outside; MCP extends what Claude can reach. Understanding the difference is what separates power users from everyone else.
What makes this guide stand out is its focus on determinism. Hooks don't depend on Claude interpreting a prompt correctly — they fire on schedule, every time, regardless of model behavior. That makes them the right tool for guardrails, formatting, logging, and any workflow step where consistency matters more than flexibility. Part 2 of a growing Claude Code Power User Guide series, this one belongs bookmarked next to your CLAUDE.md.