What is cache-meter?
cache-meter is a Claude Code mod by drdickgraysonjr that prompt cache status above the prompt: how long the cache stays warm, what a re-cache would cost, plan limits near the cap. Keeps a big cache warm on request and asks before a cold send. It is listed under Cost & usage and has 3 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | drdickgraysonjr |
| Repository | drdickgraysonjr/chalkery |
| Popularity | 3 GitHub stars |
| Category | Cost & usage |
| Security | Low risk (84/100) |
| Rank | #791 of 5,272 Claude Code mods; #151 in Cost & usage |
| License | MIT |
| Last commit | 2026-10-06 |
| Stars this week | +1 |
| Hooks | 12 events |
| Sees | classic hooks, compaction, every prompt |
| Draws on | AbovePrompt, SessionMode |
Is cache-meter safe to install?
cache-meter scores 84/100 on the MCPMods security check: Low risk. Things to review: watches every prompt or event. 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 |
| Watches every prompt or event | Review |
| Drives Claude (model calls, prompts) | Note |
| 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.list | |
$.command.register | |
$.command.run | drives Claude |
$.config.list | |
$.model.fork | drives Claude |
$.session.compact | drives Claude |
$.session.model | |
$.session.usage | |
$.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 cache-meter?
- 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/drdickgraysonjr/chalkery claude plugin validate ./chalkery/plugins/cache-meter
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/drdickgraysonjr/chalkery && claude --plugin-dir ./chalkery/plugins/cache-meter
Or ask Claude to set it up
Paste this into Claude Code and it installs cache-meter for you:
Install the "cache-meter" Claude Code mod from https://github.com/drdickgraysonjr/chalkery/tree/main/plugins/cache-meter. Run claude plugin validate on it first and show me what it can access before you enable it.
More from drdickgraysonjr/chalkery
This repository has 3 Claude Code mods on MCPMods.
- handoff-relay: A Handoff button above the prompt: runs /handoff and lights up from 180k tokens of context (the threshold option). Joins (Low risk)
- next-steps: A What next? button above the prompt: on press, suggests up to three next prompts; 1, 2 or 3 puts one into the input box (Low risk)