What is jeffort?
jeffort is a Claude Code mod by vntrungld that per-turn effort routing with TypeSafe's Jev, applied per request at turn.step. Off until /jev on. It is listed under Interface and has 2 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | vntrungld |
| Repository | vntrungld/jeffort |
| Popularity | 2 GitHub stars |
| Category | Interface |
| Security | Review before installing (60/100) |
| Rank | #1,417 of 5,272 Claude Code mods; #556 in Interface |
| License | MIT |
| Last commit | 2026-10-05 |
| Hooks | 7 events |
| Sees | every prompt, subagent spawns |
| Draws on | nothing |
Is jeffort safe to install?
jeffort scores 60/100 on the MCPMods security check: Review before installing. Things to review: sends data over the network; 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 |
|---|---|
| Sends data over the network | Review |
| Starts no processes | Pass |
| Writes no files or config | Pass |
| Reads environment variables | Review |
| Watches every prompt or event | Review |
| Doesn't drive Claude | Pass |
| Validator reported problems | Note |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.clock.now | |
$.clock.sleep | |
$.command.register | |
$.env.get | reads env vars |
$.http.fetch | network requests |
$.store.get | keeps its own state |
$.store.set | keeps its own state |
$.ui.log | draws interface |
$.ui.status | draws interface |
How do I install jeffort?
- 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/vntrungld/jeffort claude plugin validate ./jeffort/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add vntrungld/jeffort && claude plugin install jeffort@vntrungld
Or ask Claude to set it up
Paste this into Claude Code and it installs jeffort for you:
Install the "jeffort" Claude Code mod from https://github.com/vntrungld/jeffort. Run claude plugin validate on it first and show me what it can access before you enable it.