Nexargio Sovereign Model Context Protocol (MCP) Server

The Sovereign Cyber-Physics Defense Organ for Autonomous AI Agents

Connects Claude Desktop, Cursor IDE, Antigravity, and autonomous agent frameworks directly to the Nexargio Autonomous Cyber-Physics & Neural Defense Gateway.

🛠️ The Unified Sovereign Tool: nexargio_scan

We provide ONE single, polymorphic tool. No confusion, no multiple buttons:

nexargio_scan(target: str, scan_mode: str = "fast")

What target accepts:

1. Full URL: e.g. https://login.microsoftonline.portal-security-check.com/auth
2. Domain name: e.g. portal-security-check.com (automatically normalized to https://)
3. QR Code Image: e.g. C:\Downloads\invoice_qr.png or Base64 (automatically decodes to URL and scans the destination)

What it executes:

• All 18 DOM Primitives (credential sinks, login forms, hidden fields, exfiltration actions)
• Sensory DAG (DNS domain age/NRD, TLS/X.509 cert authority, BGP ASN routing)
• Brand Contradiction Analysis (detects mimicry of Microsoft, Google, PayPal, Amazon, etc.)
• Autonomous Neural Reasoning:
  • Single Scan: Evaluated by Qwen for deep forensic explanation and verdict.
  • Bulk / Fleet Scan: Evaluated by JEV for high-velocity probability scoring.
• RFC 3161 NIST SHA-256 Notarization: Returns an immutable evidence seal for SOC compliance.

🚀 Connect to Claude Desktop

Option A: Via uvx (Recommended - Zero Path Dependency)

In %APPDATA%\Claude\claude_desktop_config.json:

{
  "mcpServers": {
    "nexargio": {
      "command": "uvx",
      "args": ["nexargio-mcp"],
      "env": {
        "NEXARGIO_API_KEY": "<YOUR_PORTAL_API_KEY>",
        "NEXARGIO_GATEWAY_URL": "https://nexargio-vip-gateway-bepltxkx4a-el.a.run.app"
      }
    }
  }
}

Option B: Local Direct Python Path

{
  "mcpServers": {
    "nexargio": {
      "command": "python",
      "args": [
        "c:\\Users\\venky\\my project 4-1\\myproject\\nexargio_mcp.py"
      ],
      "env": {
        "NEXARGIO_API_KEY": "<YOUR_PORTAL_API_KEY>",
        "NEXARGIO_GATEWAY_URL": "https://nexargio-vip-gateway-bepltxkx4a-el.a.run.app"
      }
    }
  }
}

🚀 Connect to Cursor IDE

In .cursor/mcp.json:

{
  "mcpServers": {
    "nexargio-defense": {
      "command": "uvx",
      "args": ["nexargio-mcp"],
      "env": {
        "NEXARGIO_API_KEY": "<YOUR_PORTAL_API_KEY>"
      }
    }
  }
}

🧪 Verification

Run the validation test:

python "c:\Users\venky\my project 4-1\myproject\test_mcp_client.py"