Best Claude Code hooks

A Claude Code mod that keeps an idle session's prompt cache warm with silent pings, then compacts large sessions once while the cache is still warm.

# 🐹 Token Hamster: Claude Code mod for token usage & limits

Plugin analytics: hooks $.telemetry's two events, so a plugin logs an event or marks a feature's use as a first-party row, sent in batches with the session's own credential.

Show a live tree of subagents and teammates beside the conversation.

A Claude Code mod that shows a crab above the prompt acting out what Claude is doing, with a shell meter for context window and rate-limit usage.

Official Anthropic plugin that loads AGENTS.md the way Claude Code loads CLAUDE.md, via one instructionFiles option with four modes: claude-md, claude-md-or-agents-md (default), claude-md-and-agents-md, and managed-only.

AI music generation via Cognitum Music (cogmusic MCP) — compose lyrics/prompts, generate tracks, separate stems, extract MIDI, and master through your own music.cognitum.one account. As a mod (ADR-445): a tighten-only guard on its tools, /music-mod, and a status file the console shows

Music on demand inside a Claude Code session, asked in plain words, played without a browser.

The diff pane as a plugin: /diff opens the session's uncommitted changes beside the transcript, file by file with their hunks, refreshed as Claude edits and runs commands; the first edit opens it where the terminal is wide enough, and a file's ask button rides its hunks on the next prompt.

Claude Code plugin that compresses tool output, checkpoints before compaction, scores context quality, and reports token/cost savings on a local dashboard; ships hooks and a localhost daemon.

A pixel-art progress bar with the Claude mascot and a side panel that turns your subagents into a crew of characters (developer, artist, researcher, tester, Codex...).

The security default for organizations. Function hooks give every plugin a say on every event, in chain order, and the plugins a person installs sit in the user tier, beneath the organization's prepend tier and above its append tier. Some of what an organization sets today (its classic hooks, its managed CLAUDE.md and rules, its settings, its MCP allowlist, the deny rules in force on its machines) was never within a person's reach before function hooks; seated outermost, this plugin keeps exactly those out of the user tier's reach and adds no policy of its own. Everything else passes through untouched.