What is idle-compact?
idle-compact is a Claude Code mod by xyjk0511 that compact once after 50 idle minutes, while the 1h prompt cache is still warm. Works in the desktop app and SDK sessions too. It is listed under Cost & usage and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | xyjk0511 |
| Repository | xyjk0511/idle-compact |
| Popularity | no public popularity data yet |
| Category | Cost & usage |
| Security | Low risk (88/100) |
| Rank | #5,168 of 5,272 Claude Code mods; #1,017 in Cost & usage |
| License | Apache-2.0 |
| Last commit | 2026-10-04 |
| Hooks | 5 events |
| Sees | compaction |
| Draws on | SessionMode |
Is idle-compact safe to install?
idle-compact scores 88/100 on the MCPMods security check: Low risk. Things to review: starts processes outside the sandbox. 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 processes outside the sandbox | Review |
| 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 |
|---|---|
$.clock.after | |
$.clock.now | |
$.command.run | drives Claude |
$.process.run | runs processes |
$.session.compact | drives Claude |
$.session.cwd | |
$.session.id | |
$.ui.invalidate | draws interface |
$.ui.log | draws interface |
How do I install idle-compact?
- 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/xyjk0511/idle-compact claude plugin validate ./idle-compact/plugins/idle-compact
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add xyjk0511/idle-compact && claude plugin install idle-compact@idle-compact
Or ask Claude to set it up
Paste this into Claude Code and it installs idle-compact for you:
Install the "idle-compact" Claude Code mod from https://github.com/xyjk0511/idle-compact/tree/main/plugins/idle-compact. Run claude plugin validate on it first and show me what it can access before you enable it.