What is context-meter?
context-meter is a Claude Code mod by justerification that a band above the prompt: context window fill, plan usage limits and session cost, a Recap button, and a per-day cost record read with /spend. It is listed under Cost & usage and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | justerification |
| Repository | justerification/claude-code-context-meter |
| Popularity | no public popularity data yet |
| Category | Cost & usage |
| Security | Review before installing (60/100) |
| Rank | #3,648 of 5,272 Claude Code mods; #678 in Cost & usage |
| License | MIT |
| Last commit | 2026-10-06 |
| Hooks | 5 events |
| Sees | every prompt |
| Draws on | AbovePrompt |
Is context-meter safe to install?
context-meter scores 60/100 on the MCPMods security check: Review before installing. Things to review: writes files or config; reads environment variables; watches every prompt or event. It passed 4 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 |
| 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.every | |
$.clock.now | |
$.command.register | |
$.env.get | reads env vars |
$.fs.list | reads files |
$.fs.read | reads files |
$.fs.write | writes files |
$.model.fork | drives Claude |
$.session.id | |
$.session.usage | |
$.state.get | |
$.state.set | |
$.ui.invalidate | draws interface |
$.ui.resolve | draws interface |
How do I install context-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/justerification/claude-code-context-meter claude plugin validate ./claude-code-context-meter/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add justerification/claude-code-context-meter && claude plugin install context-meter@context-meter
Or ask Claude to set it up
Paste this into Claude Code and it installs context-meter for you:
Install the "context-meter" Claude Code mod from https://github.com/justerification/claude-code-context-meter. Run claude plugin validate on it first and show me what it can access before you enable it.