What is cache-watch?
cache-watch is a Claude Code mod by anthonyhungnguyen that toast when a turn rebuilt the prompt cache, with what it cost and the likely cause. It is listed under Cost & usage and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | anthonyhungnguyen |
| Repository | anthonyhungnguyen/claude-code-mods |
| Popularity | no public popularity data yet |
| Category | Cost & usage |
| Security | Low risk (92/100) |
| Rank | #2,623 of 5,272 Claude Code mods; #447 in Cost & usage |
| Last commit | 2026-10-02 |
| Hooks | 2 events |
| Sees | only the events it hooks |
| Draws on | nothing |
Is cache-watch safe to install?
cache-watch scores 92/100 on the MCPMods security check: Low risk. No checks raised a concern. 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 no files or config | Pass |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Validator reported problems | Note |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.now | |
$.session.usage | |
$.state.get | |
$.state.set | |
$.ui.toast | draws interface |
How do I install cache-watch?
- 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/anthonyhungnguyen/claude-code-mods claude plugin validate ./claude-code-mods/cache-watch
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/anthonyhungnguyen/claude-code-mods && claude --plugin-dir ./claude-code-mods/cache-watch
Or ask Claude to set it up
Paste this into Claude Code and it installs cache-watch for you:
Install the "cache-watch" Claude Code mod from https://github.com/anthonyhungnguyen/claude-code-mods/tree/main/cache-watch. Run claude plugin validate on it first and show me what it can access before you enable it.
More from anthonyhungnguyen/claude-code-mods
This repository has 4 Claude Code mods on MCPMods.
- context-guard: Context window fill in the status line, with a heads-up before it runs out (Low risk)
- cost-pane: Pane of token and USD spend: this session, today, last 7 days (Low risk)
- turn-timer: Speaks and toasts when a long turn finishes (Low risk)