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Guardian

Verified Integration
Author: @aryan877•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#API#Git#Filesystem#AI#GitHub#Node.js#Docker

Client Configuration

— Connect Guardian to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "guardian-4": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-guardian-4"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Scans, tests, and locks down other MCP servers to prevent vulnerabilities and exfiltration.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Guardian

Guardian detects a wide range of threats including prompt injection, command injection, PII exposure, excessive permissions, dangerous data exfiltration chains (the 'Lethal Trifecta'), missing input validation, and tool poisoning.

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