What is fast-jev-compaction?
fast-jev-compaction is a Claude Code mod by lwyBZss8924d that verbatim Jev-guided compaction for Claude Code sessions. It is listed under Context & memory and has 1 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | lwyBZss8924d |
| Repository | lwyBZss8924d/ultrafast-atif-helper |
| Popularity | 1 GitHub stars |
| Category | Context & memory |
| Security | Review before installing (65/100) |
| Rank | #1,952 of 5,272 Claude Code mods; #195 in Context & memory |
| License | MIT |
| Last commit | 2026-09-29 |
| Hooks | 0 events |
| Sees | only the events it hooks |
| Draws on | nothing |
Is fast-jev-compaction safe to install?
fast-jev-compaction scores 65/100 on the MCPMods security check: Review before installing. Things to review: validator reported problems. 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 |
| Doesn't read environment variables | Pass |
| Only sees the events it hooks | Pass |
| Doesn't drive Claude | Pass |
| Validator reported problems | Flag |
| Has an open-source license | Pass |
How do I install fast-jev-compaction?
- 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/lwyBZss8924d/ultrafast-atif-helper claude plugin validate ./ultrafast-atif-helper/upstream-reference
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add lwyBZss8924d/ultrafast-atif-helper && claude plugin install fast-jev-compaction@fast-jev-compaction
Or ask Claude to set it up
Paste this into Claude Code and it installs fast-jev-compaction for you:
Install the "fast-jev-compaction" Claude Code mod from https://github.com/lwyBZss8924d/ultrafast-atif-helper/tree/main/upstream-reference. Run claude plugin validate on it first and show me what it can access before you enable it.