# udp_scan

Perform a UDP scan on the specified target with optional custom arguments.

Agent View of the PolicyLayer registry record for `udp_scan`. HTML page: https://policylayer.com/tools/0xpratikpatil-nmapmcp/udp-scan

## Facts

- Tool: `udp_scan`
- Server: NmapMCP (`0xpratikpatil/nmapmcp`) — https://policylayer.com/tools/0xpratikpatil-nmapmcp.md
- Homepage: https://github.com/0xPratikPatil/NmapMCP
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "udp_scan",
    "arguments": {}
  }
}
```

## Why udp_scan is rated High

UDP scanning actively probes remote hosts by sending network packets, which constitutes an external operation with real-world effects (network traffic, potential IDS alerts, legal implications). It is not merely reading local data but executing active reconnaissance against targets. Classified as Execute with high severity due to the potential for misuse against unauthorized targets.

From the tool's own definition: "'Perform a UDP scan on the specified target' — actively sends UDP packets to external hosts; part of a network reconnaissance MCP server"

## Use case

AI agents invoke udp_scan to trigger actions in NmapMCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches NmapMCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "udp_scan": {
      "limits": [
        {
          "counter": "udp_scan_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on NmapMCP (14)

- `arp_discovery` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/arp-discovery.md
- `disable_dns_resolution` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/disable-dns-resolution.md
- `dns_brute_force` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/dns-brute-force.md
- `fin_scan` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/fin-scan.md
- `idle_scan` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/idle-scan.md
- `no_portscan` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/no-portscan.md
- `os_detection` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/os-detection.md
- `ping_scan` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/ping-scan.md
- `portscan_only` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/portscan-only.md
- `scan_top_ports` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/scan-top-ports.md
- `syn_scan` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/syn-scan.md
- `tcp_scan` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/tcp-scan.md
- `version_detection` — Execute — https://policylayer.com/tools/0xpratikpatil-nmapmcp/version-detection.md
- `list_scan` — Read — https://policylayer.com/tools/0xpratikpatil-nmapmcp/list-scan.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xpratikpatil-nmapmcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xpratikpatil-nmapmcp