What is notch-crab?
notch-crab is a Claude Code mod by JustinPerea that 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. It is listed under Context & memory and has 2 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | JustinPerea |
| Repository | JustinPerea/notch-crab |
| Popularity | 2 GitHub stars |
| Category | Context & memory |
| Security | Review before installing (76/100) |
| Rank | #1,198 of 5,272 Claude Code mods; #125 in Context & memory |
| License | MIT |
| Last commit | 2026-10-02 |
| Stars this week | +1 |
| Hooks | 3 events |
| Sees | classic hooks |
| Draws on | AbovePrompt |
Is notch-crab safe to install?
notch-crab scores 76/100 on the MCPMods security check: Review before installing. Things to review: sends data over the network; reads environment variables. It passed 6 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| Sends data over the network | Review |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Reads environment variables | Review |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.clock.after | |
$.clock.every | |
$.clock.now | |
$.clock.sleep | |
$.env.get | reads env vars |
$.http.fetch | network requests |
$.session.cwd | |
$.session.id | |
$.session.messages | reads the transcript |
$.session.usage | |
$.state.get | |
$.state.set | |
$.ui.blit | draws interface |
$.ui.invalidate | draws interface |
$.ui.resolve | draws interface |
How do I install notch-crab?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/JustinPerea/notch-crab claude plugin validate ./notch-crab/mod
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add JustinPerea/notch-crab && claude plugin install notch-crab@notch-crab
Or ask Claude to set it up
Paste this into Claude Code and it installs notch-crab for you:
Install the "notch-crab" Claude Code mod from https://github.com/JustinPerea/notch-crab/tree/main/mod. Run claude plugin validate on it first and show me what it can access before you enable it.