Best Claude Code hooks

# DeutschLoop **A German tutor that remembers your mistakes.** It runs inside Claude Code and Codex. Every mistake is filed under its root cause, your **FehlerDNA**, and comes back in a new sentence, *nochmal*, until it stops. Your history stays on your own machine, and there is no extra API key.

Moves tools you have not used lately behind ToolSearch, so their descriptions stop riding along on every request; core tools and anything you used in your last five sessions stay loaded.

Example Claude Code mod that shows the current git branch and working-tree status in a band above the prompt, refreshed on a timer via $.process.run and held in $.state.

Explanations as visual pages in a pane beside the chat: diagrams drawn in place, the full page one click away. No model calls.

Tells you when a newer version of an installed claude-pro-kit mod is out, and /kit-update installs it. One small download per session, no tokens spent.

The Claude Context First plugin. See the [root README](../../README.md) for installation and an overview.

A Claude Code mod from the claude-pro-kit marketplace that shows a countdown until the prompt cache expires in the status line, and once it has expired, reports exactly how many tokens the next message will re-send uncached.

Claude Code mod that skips Claude re-reading a file it already read in the same conversation when the file's size and modification time have not changed, while allowing deliberate retries, different ranges, subagents, and post-/compact or /clear reads through.

A tiny Claude Code mod that prints the local date and time beneath every completed response, so you can tell at a glance whether the tab you just clicked on is from five minutes ago or five days ago.

A Claude Code mod that asks before Claude edits a file another chat on this machine changed in the last 30 minutes. Each chat records its own edits in a per-session ledger under ~/.claude/collision-guard/, so two chats never write the same file. No model calls, no network; zero tokens unless you press Cancel.

Asks before a single turn uses more than +5 session points or 500,000 uncached input tokens, and stops it cleanly if you say so. Checks between requests, never mid-command.

Example: registers a tool the model can call and answers it