What is context-canary?
context-canary is a Claude Code mod by Nachx639 that a pixel-art canary above the prompt that dies when a reply forgets a rule from CLAUDE.md, compacts the session keeping your instructions, and revives. It is listed under Context & memory and has 1 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | Nachx639 |
| Repository | Nachx639/context-canary |
| Popularity | 1 GitHub stars |
| Category | Context & memory |
| Security | Review before installing (76/100) |
| Rank | #1,996 of 5,272 Claude Code mods; #199 in Context & memory |
| License | MIT |
| Last commit | 2026-10-10 |
| Stars this week | +1 |
| Hooks | 10 events |
| Sees | classic hooks |
| Draws on | AbovePrompt |
Is context-canary safe to install?
context-canary scores 76/100 on the MCPMods security check: Review before installing. Things to review: writes files or config; 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 |
|---|---|
| No network access | Pass |
| Starts no processes | Pass |
| Writes files or config | Review |
| 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 | |
$.command.register | |
$.env.get | reads env vars |
$.fs.exists | reads files |
$.fs.read | reads files |
$.fs.write | writes files |
$.session.compact | drives Claude |
$.session.root | |
$.state.get | |
$.state.set | |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.ask | draws interface |
$.ui.invalidate | draws interface |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install context-canary?
- 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/Nachx639/context-canary claude plugin validate ./context-canary/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/Nachx639/context-canary && claude --plugin-dir ./context-canary/.
Or ask Claude to set it up
Paste this into Claude Code and it installs context-canary for you:
Install the "context-canary" Claude Code mod from https://github.com/Nachx639/context-canary. Run claude plugin validate on it first and show me what it can access before you enable it.