What is context-meter?
context-meter is a Claude Code mod by vienna-bio-center that always-on context window meter above the prompt, with usage limits (terminal and desktop app). It is listed under Cost & usage and has 1 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | vienna-bio-center |
| Repository | vienna-bio-center/claude-vbc-mods |
| Popularity | 1 GitHub stars |
| Category | Cost & usage |
| Security | Low risk (88/100) |
| Rank | #2,371 of 5,272 Claude Code mods; #399 in Cost & usage |
| License | MIT |
| Last commit | 2026-10-09 |
| Hooks | 8 events |
| Sees | compaction, every tool call |
| Draws on | AbovePrompt, Pane |
Is context-meter safe to install?
context-meter scores 88/100 on the MCPMods security check: Low risk. Things to review: reads environment variables. It passed 7 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 |
| 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.every | |
$.command.register | |
$.env.get | reads env vars |
$.session.usage | |
$.state.get | |
$.state.set | |
$.ui.open | 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/vienna-bio-center/claude-vbc-mods claude plugin validate ./claude-vbc-mods/mods/context-meter
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add vienna-bio-center/claude-vbc-mods && claude plugin install context-meter@vbc-mods
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/vienna-bio-center/claude-vbc-mods/tree/main/mods/context-meter. Run claude plugin validate on it first and show me what it can access before you enable it.
More from vienna-bio-center/claude-vbc-mods
This repository has 2 Claude Code mods on MCPMods.
- delete-guard: Stops Claude before it deletes or overwrites files: a side panel lists every folder and file at stake, with Cancel and A (Review before installing)