Claude Code mod
jevmate
A fast decision layer for coding agents. Jev ranks files, picks the tests a change can break, sorts failures and reviews diffs by risk, so Claude reads only what matters and judges only what Jev is unsure of. Also: long output trimmed, compaction that keeps what the work still needs and saves the rest on disk, safety signals on Bash and fetched content, and the session's numbers above the prompt. Thresholds measured, not guessed.
Install
/plugin marketplace add GastonGelhorn/jevmate
/plugin install jevmate@gastongelhornMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, sets env vars, drives Claude, reads files, reads env vars, persists state, draws
- Sees
- Bash calls, every prompt, compaction, Read calls, subagent spawns
- Draws in
AbovePromptPane- Hooks
session.startsession.attachcommand.runui.closeui.renderturn.starttool.callturn.completeprompt.submitturn.stepsession.compactagent.spawntool.checkplugin.register
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- GastonGelhorn/jevmate
- Folder
.- Marketplace
gastongelhorn- Author
- Gaston Gelhorn
- License
- MIT
- Last updated
- 25 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is jevmate?
A fast decision layer for coding agents. Jev ranks files, picks the tests a change can break, sorts failures and reviews diffs by risk, so Claude reads only what matters and judges only what Jev is unsure of. Also: long output trimmed, compaction that keeps what the work still needs and saves the rest on disk, safety signals on Bash and fetched content, and the session's numbers above the prompt. Thresholds measured, not guessed. It is a mod for Claude Code, from GastonGelhorn/jevmate on GitHub.
What can the jevmate mod access?
Its widest reach is "writes or runs" (runs processes, sets env vars, drives Claude, reads files, reads env vars, persists state, draws). It sees Bash calls, every prompt, compaction, Read calls, subagent spawns. It draws in AbovePrompt, Pane. Like any mod, it runs with your permissions.
How do I install jevmate?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add GastonGelhorn/jevmate and then /plugin install jevmate@gastongelhorn.
Is jevmate popular?
GastonGelhorn/jevmate has 1 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 25 October 2026.
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