@vincemask: Many people don’t know when to use Hooks. My rule is simple: anything you find yourself repeatedly reminding Claude about should be taken out of the prompt and handed to a Hook. For example: 1. Formatting code after every edit 2. Running lint/tests before every commit 3. ...

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Summary

This post explains when to use Hooks to codify repetitive rules in Claude AI programming assistance (such as auto-formatting, pre-commit checks, etc.), suggesting that stable, repetitive, and easily forgotten processes should be moved from the Prompt to be executed by default in the environment.

Many people don’t know when to use Hooks. My rule is simple: anything you find yourself repeatedly reminding Claude about should be taken out of the prompt and handed to a Hook. For example: 1. Formatting code after every edit 2. Running lint/tests before every commit 3. Prohibiting modifications to certain directories or config files 4. Automatically checking for type errors after code generation 5. Intercepting and confirming before operating on high-risk files 6. Auto-injecting project context at the start of a session 7. Automatically recording change summaries at the end of a task Prompts are for expressing intent; Hooks are for solidifying rules. The more stable, repetitive, and easy to forget a process is, the more it should be handed over to the environment to execute by default.
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Cached at: 05/23/26, 04:03 AM

Many people don’t know when to use Hooks.

My rule of thumb is simple: whenever you find yourself repeatedly reminding Claude about something, consider moving it out of the prompt and into a Hook.

For example:

  1. Format code after every edit
  2. Run lint/tests before every commit
  3. Forbid modifying certain directories or config files
  4. Auto-check for type errors after code generation
  5. Intercept and confirm before operating on high-risk files
  6. Auto-inject project context at session start
  7. Auto-record change summaries at task end

Prompts are for expressing intent; Hooks are for enforcing rules. The more stable, repetitive, and easy-to-forget a process is, the more it should be left to the environment to execute by default.

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