Claude Code mod
notch-crab
A pixel crab above your Claude Code prompt that acts out every hook (33 reactions). Thin bars beside him track the context window and your 5-hour and weekly limits. Works on its own. If the notch-crab Mac app (not released yet) is running, the mod also sends it each hook event's name, session id, tool name and ids, notification type and working directory, plus how many tools a batch ran, so the crab in your MacBook's notch reacts too. That goes over a local Unix socket and never includes prompts, tool inputs or outputs. The full list is in mod/hooks/wire.mjs.
Install
/plugin marketplace add JustinPerea/notch-crab
/plugin install notch-crab@notch-crabMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L3Network: network, reads env vars, reads the transcript, reads mod state, draws
- Sees
- classic hooks
- Draws in
AbovePrompt- Hooks
session.measureclassic.*ui.render
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- JustinPerea/notch-crab
- Folder
mod- Marketplace
notch-crab- Author
- Good Machines
- Website
- justinperea.com/lab/notch-crab
- License
- MIT
- Last updated
- 2 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is notch-crab?
A pixel crab above your Claude Code prompt that acts out every hook (33 reactions). Thin bars beside him track the context window and your 5-hour and weekly limits. Works on its own. If the notch-crab Mac app (not released yet) is running, the mod also sends it each hook event's name, session id, tool name and ids, notification type and working directory, plus how many tools a batch ran, so the crab in your MacBook's notch reacts too. That goes over a local Unix socket and never includes prompts, tool inputs or outputs. The full list is in mod/hooks/wire.mjs. It is a mod for Claude Code, from JustinPerea/notch-crab on GitHub.
What can the notch-crab mod access?
Its widest reach is "network" (network, reads env vars, reads the transcript, reads mod state, draws). It sees classic hooks. It draws in AbovePrompt. Like any mod, it runs with your permissions.
How do I install notch-crab?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add JustinPerea/notch-crab and then /plugin install notch-crab@notch-crab.
Is notch-crab popular?
JustinPerea/notch-crab has 2 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 2 October 2026.
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