What is jev-prompt-grader?
jev-prompt-grader is a Claude Code mod by Syptern that grades each prompt you send with TypeSafe's Jev model and shows what is missing above the prompt box. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | Syptern |
| Repository | Syptern/jev-prompt-grader |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Review before installing (60/100) |
| Rank | #4,749 of 5,272 Claude Code mods; #1,948 in Interface |
| Last commit | 2026-10-09 |
| Hooks | 3 events |
| Sees | every prompt |
| Draws on | AbovePrompt |
Is jev-prompt-grader safe to install?
jev-prompt-grader 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 |
| Passes claude plugin validate | Pass |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.env.get | reads env vars |
$.http.fetch | network requests |
$.prompt.read | |
$.state.get | |
$.state.set | |
$.ui.resolve | draws interface |
How do I install jev-prompt-grader?
- 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/Syptern/jev-prompt-grader claude plugin validate ./jev-prompt-grader/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add Syptern/jev-prompt-grader && claude plugin install jev-prompt-grader@jev-prompt-grader
Or ask Claude to set it up
Paste this into Claude Code and it installs jev-prompt-grader for you:
Install the "jev-prompt-grader" Claude Code mod from https://github.com/Syptern/jev-prompt-grader. Run claude plugin validate on it first and show me what it can access before you enable it.