What is cache-shot-clock?
cache-shot-clock is a Claude Code mod by cjavdev that a shot clock for the prompt cache's TTL: a small countdown in the bar under the prompt, and a big LED clock above it for the last seconds before the next turn pays a full cache write. It is listed under Cost & usage and has 2 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | cjavdev |
| Repository | cjavdev/mods |
| Popularity | 2 GitHub stars |
| Category | Cost & usage |
| Security | Low risk (84/100) |
| Rank | #1,132 of 5,272 Claude Code mods; #207 in Cost & usage |
| Last commit | 2026-10-02 |
| Hooks | 10 events |
| Sees | classic hooks, compaction |
| Draws on | PromptHint, AbovePrompt |
Is cache-shot-clock safe to install?
cache-shot-clock scores 84/100 on the MCPMods security check: Low risk. Things to review: starts processes outside the sandbox. 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 processes outside the sandbox | Review |
| Writes no files or config | Pass |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Passes claude plugin validate | Pass |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.every | |
$.clock.now | |
$.process.run | runs processes |
$.state.get | |
$.state.set | |
$.ui.resolve | draws interface |
$.ui.toast | draws interface |
How do I install cache-shot-clock?
- 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/cjavdev/mods claude plugin validate ./mods/cache-shot-clock
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/cjavdev/mods && claude --plugin-dir ./mods/cache-shot-clock
Or ask Claude to set it up
Paste this into Claude Code and it installs cache-shot-clock for you:
Install the "cache-shot-clock" Claude Code mod from https://github.com/cjavdev/mods/tree/main/cache-shot-clock. Run claude plugin validate on it first and show me what it can access before you enable it.
More from cjavdev/mods
This repository has 4 Claude Code mods on MCPMods.
- cache-saver: When an idle session's prompt cache is about to expire, summarizes it while the cache is still warm; when you come back, (Review before installing)
- context-meter: A tiny meter in the bar under the prompt showing how full the context window is: five cells, the percent and the token c (Low risk)
- link-bar: Links in the bar under the prompt to the artifacts and pull requests mentioned most recently in the conversation. (Low risk)