What is cache-clock?
cache-clock is a Claude Code mod by xyzbuilds that shows how long Claude Code's prompt cache stays warm, how many tokens your next message re-sends, and what it costs now versus after the cache expires. It is listed under Cost & usage and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | xyzbuilds |
| Repository | xyzbuilds/cache-clock |
| Popularity | no public popularity data yet |
| Category | Cost & usage |
| Security | Review before installing (76/100) |
| Rank | #5,169 of 5,272 Claude Code mods; #1,018 in Cost & usage |
| License | MIT |
| Last commit | 2026-10-06 |
| Hooks | 7 events |
| Sees | classic hooks |
| Draws on | PromptHint, Pane |
Is cache-clock safe to install?
cache-clock 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 | |
$.command.register | |
$.env.get | reads env vars |
$.http.fetch | network requests |
$.session.usage | |
$.settings.read | reads settings |
$.state.get | |
$.state.set | |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.log | draws interface |
$.ui.open | draws interface |
$.ui.resolve | draws interface |
How do I install cache-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/xyzbuilds/cache-clock claude plugin validate ./cache-clock/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/xyzbuilds/cache-clock && claude --plugin-dir ./cache-clock/.
Or ask Claude to set it up
Paste this into Claude Code and it installs cache-clock for you:
Install the "cache-clock" Claude Code mod from https://github.com/xyzbuilds/cache-clock. Run claude plugin validate on it first and show me what it can access before you enable it.