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What you can do with Jev Guard

jev-guard is a security hook for coding agents that scores each tool call with session context and returns deny, ask, or allow, flags prompt injection in tool results, and checks skills and plugins, powered by Jev.

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What do you want to do?

5 use cases

  • Guard Claude Code tool calls with deny and ask decisions

    Add a pre-tool check to Claude Code that blocks destructive commands and asks before risky ones.

    View prompt
    Install jev-guard from the leepokai/jev-guard repo for Claude Code on this machine, then run `jev-guard check Bash '{"command":"rm -rf ~/"}'` and report whether the output starts with DENY. Do not run the destructive command itself.

  • Scan agent skills and plugins for unexpected behavior

    Check installed skills, plugins and instruction files for exfiltration, covert execution or overrides.

    View prompt
    Use the leepokai/jev-guard repo to scan the skills and plugins on this machine by running `jev-guard scan-skills`. Report every flagged file with its kind, and confirm that no file was modified by the scan.

  • Add a guard layer to Codex through its plugin browser

    Install the Jev Guard plugin in Codex and trust its hooks so tool calls are checked.

    View prompt
    Install the jev-guard plugin in Codex from the leepokai/jev-guard marketplace, trust its hooks with /hooks, and report whether the hooks list shows jev-guard as trusted. Do not run any destructive command to test it.

  • Require approval for risky Cursor shell and MCP calls

    Install the Cursor guard so shell and MCP tool calls are denied or sent for approval.

    View prompt
    Install jev-guard for Cursor on this machine with `jev-guard install cursor` and report the path of the hooks file it wrote. Do not run any shell command that changes files.

  • Put a guard proxy between Zed and an ACP agent

    Wrap an ACP agent in Jev Guard so permission requests cover terminal and file writes.

    View prompt
    Configure a Zed agent_servers entry in <settings-file> that runs the jev-guard acp proxy around <agent-command>, following the leepokai/jev-guard ACP example. Report the final JSON and confirm the proxy is the command that starts the agent.

How to use Jev Guard

  1. Check you have what it needs: Node.js and npm, to install the jev-guard package or run the install commands; One provider key: a TypeSafe key from console.typesafe.ai, a vck_ Vercel AI Gateway key, or an sk-or- OpenRouter key; The coding agent you want to guard, installed on the same machine.
  2. Open leepokai/jev-guard on GitHub and read the README and license.
  3. Run npm i -g jev-guard
  4. Run jev-guard key "…" with your TypeSafe, Vercel AI Gateway or OpenRouter key
  5. Run jev-guard install claude
  6. Start Claude Code and run a harmless command, then run jev-guard check Bash '{"command":"rm -rf ~/"}' to confirm the deny output

These steps come from our top use case, Guard Claude Code tool calls with deny and ask decisions, which also has a copy-paste agent prompt.

Jev Guard alternatives · Best AI repos for Security and science

About this repo

  • Who it is forDevelopers who run coding agents such as Claude Code, Codex, Cursor or Gemini CLI on real repositories and want an extra approval layer before risky commands run.
  • Why it is hot
  • LanguageJavaScript
  • Sourcegithub.com/leepokai/jev-guard · Back to Hot repos

Requirements

  • Node.js and npm, to install the jev-guard package or run the install commands
  • One provider key: a TypeSafe key from console.typesafe.ai, a vck_ Vercel AI Gateway key, or an sk-or- OpenRouter key
  • The coding agent you want to guard, installed on the same machine

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Questions about Jev Guard

What is Jev Guard?

jev-guard is a security hook for coding agents that scores each tool call with session context and returns deny, ask, or allow, flags prompt injection in tool results, and checks skills and plugins, powered by Jev. It is an open-source project on GitHub: https://github.com/leepokai/jev-guard.

Who is Jev Guard for?

Developers who run coding agents such as Claude Code, Codex, Cursor or Gemini CLI on real repositories and want an extra approval layer before risky commands run.

What can I do with Jev Guard?

5 use cases so far, for example: Guard Claude Code tool calls with deny and ask decisions; Scan agent skills and plugins for unexpected behavior; Add a guard layer to Codex through its plugin browser. Each has steps and a copy-paste agent prompt.

What do I need to run Jev Guard?

Node.js and npm, to install the jev-guard package or run the install commands; One provider key: a TypeSafe key from console.typesafe.ai, a vck_ Vercel AI Gateway key, or an sk-or- OpenRouter key; The coding agent you want to guard, installed on the same machine.

What are alternatives to Jev Guard?

Other hot AI repos in Security and science: Cosy Redact Gateway, Security Audit Skill, Reburp, Rea, Reverify.

Is Jev Guard safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.