What is usage?
usage is a Claude Code mod by bitcars that live context-window bar in the status line: fill, tokens/window, cache share, auto-compact headroom, cost. It is listed under Cost & usage and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | bitcars |
| Repository | bitcars/ctx-bar |
| Popularity | no public popularity data yet |
| Category | Cost & usage |
| Security | Low risk (100/100) |
| Rank | #2,745 of 5,272 Claude Code mods; #473 in Cost & usage |
| License | MIT |
| Last commit | 2026-10-11 |
| Hooks | 6 events |
| Sees | compaction |
| Draws on | nothing |
Is usage safe to install?
usage scores 100/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 8 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 |
| 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 |
|---|---|
$.fs.read | reads files |
$.session.usage | |
$.state.get | |
$.state.set | |
$.ui.log | draws interface |
$.ui.status | draws interface |
How do I install usage?
- 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/bitcars/ctx-bar claude plugin validate ./ctx-bar/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
git clone https://github.com/bitcars/ctx-bar && claude --plugin-dir ./ctx-bar/.
Or ask Claude to set it up
Paste this into Claude Code and it installs usage for you:
Install the "usage" Claude Code mod from https://github.com/bitcars/ctx-bar. Run claude plugin validate on it first and show me what it can access before you enable it.