agent-guard

v3.5.6

Local-by-default, no-telemetry hooks inspect user prompts, supported tool inputs, outputs, and changed files in every enabled Claude Code or Codex session to block or mask secret leaks. Includes opt-in PII filtering and Git/CI backstops.

CodexClaude Code2 Skills

By Agent Guard contributorsLicense: MIT31 GitHub starsUpdated yesterday

Directory evidence

Runtimes: Codex and Claude Code
Parsed components: 2 skill or MCP entries
Source updated: Oct 4, 2026
Manifest status: Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install agent-guard for Codex and Claude Code

Installs for the current user

codex plugin marketplace add JeongJaeSoon/agent-guard
codex plugin marketplace upgrade agent-guard
codex plugin add agent-guard@agent-guard

Paste and run these commands in a terminal with Codex. They add and refresh the agent-guard catalog, then install this plugin.

Compatibility: the page URL and API slug “agent-guard-3” remain stable.

Codex: agent-guard-3@agent-plugin-marketplace → agent-guard@agent-guard

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually

$ git clone https://github.com/JeongJaeSoon/agent-guard

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/agent-guard/.

Plugin files

plugins/agent-guard/

├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
├── skills/setup-agent-guard/SKILL.md
└── skills/setup-shell/SKILL.md

Included Skills2

setup-agent-guardskills/setup-agent-guard/SKILL.md

Diagnose, install, and verify Agent Guard's plugin-local binary, jq and gitleaks dependencies, the active host integration, and live hook protection. Use when Agent Guard reports degraded protection, a SessionStart warning asks for setup, plugin hooks fail or appear bypassed, or a user asks to finish or repair Agent Guard installation.

setup-shellskills/setup-shell/SKILL.md

Install or refresh Agent Guard's plugin-local shell integration. Use when the user explicitly asks to enable or update shell command masking, or when a shell-integration warning directs them to rerun setup-shell.

Plugin manifests2

plugins/agent-guard/.codex-plugin/plugin.json

{
  "name": "agent-guard",
  "version": "3.5.6",
  "description": "Local-by-default, no-telemetry hooks inspect user prompts, supported tool inputs, outputs, and changed files in every enabled Claude Code or Codex session to block or mask secret leaks. Includes opt-in PII filtering and Git/CI backstops.",
  "author": {
    "name": "Agent Guard contributors",
    "url": "https://github.com/JeongJaeSoon"
  },
  "homepage": "https://github.com/JeongJaeSoon/agent-guard",
  "repository": "https://github.com/JeongJaeSoon/agent-guard",
  "license": "MIT",
  "keywords": [
    "agent",
    "secrets",
    "gitleaks",
    "hooks",
    "security"
  ],
  "hooks": "./hooks.json",
  "skills": "./codex-skills/",
  "interface": {
    "displayName": "Agent Guard",
    "shortDescription": "Real-time secret-leak guardrails for AI coding agents",
    "longDescription": "Local-by-default, no-telemetry hooks inspect supported tool-call inputs, outputs, and changed files in every enabled Claude Code or Codex session. Agent Guard blocks secrets pasted into the user prompt; blocks risky `.env` reads, secret writes, and credential-dumping commands; masks secret-like tool output; and adds native Git-hook and GitHub Actions backstops. PII hook processing and HTTP providers are opt-in.",
    "developerName": "Agent Guard contributors",
    "category": "Developer Tools",
    "capabilities": [
      "Read"
    ],
    "websiteURL": "https://github.com/JeongJaeSoon/agent-guard",
    "brandColor": "#183567",
    "composerIcon": "./assets/icon.png",
    "screenshots": []
  }
}

plugins/agent-guard/.claude-plugin/plugin.json

{
  "name": "agent-guard",
  "description": "Local-by-default, no-telemetry hooks inspect user prompts, supported tool inputs, outputs, and changed files in every enabled Claude Code or Codex session to block or mask secret leaks. Includes opt-in PII filtering and Git/CI backstops.",
  "version": "3.5.6",
  "author": {
    "name": "Agent Guard contributors",
    "url": "https://github.com/JeongJaeSoon"
  },
  "homepage": "https://github.com/JeongJaeSoon/agent-guard",
  "repository": "https://github.com/JeongJaeSoon/agent-guard",
  "license": "MIT",
  "keywords": [
    "secrets",
    "gitleaks",
    "hooks",
    "security",
    "privacy"
  ]
}