How do I install the Nmap MCP skill?

Run npx skillmds@latest add dvcrn/nmap-mcp in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Nmap MCP safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: executes scripts. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Nmap MCP?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Nmap MCP free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Nmap MCP?

dvcrn (@dvcrn) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Nmap MCP by dvcrn — Agent Skill

Name: Nmap MCP
Rating: 4.5 (4 reviews)
Author: dvcrn

Nmap MCP

Network scanning MCP server wrapping nmap. Provides 14 purpose-built tools for host discovery, port scanning (SYN/TCP/UDP), service & OS detection, NSE script execution, and vulnerability scanning. Returns structured JSON output. Includes scope enforcement (CIDR allowlist), audit logging, and scan persistence. Use when performing network security audits, asset discovery, or recon on authorized networks.

dvcrn Updated Sep 8, 2026 32 repo stars

File contents

nmap-mcp Skill

MCP server that exposes nmap as structured tools with scope enforcement, audit logging, and persistent scan results.

Prerequisites

nmap installed (/usr/bin/nmap or configure path in config.yaml)
Python 3.10+ with fastmcp, python-nmap, pyyaml
For SYN/OS/ARP scans: cap_net_raw capability on the nmap binary (see Setup)

Setup

# 1. Install Python dependencies
pip install fastmcp python-nmap pyyaml

# 2. Grant nmap raw socket capability (required for SYN + OS detection)
#    Only needs to be done once. Re-run after nmap upgrades.
sudo setcap cap_net_raw+ep $(which nmap)

# 3. Verify it worked
getcap $(which nmap)
# Expected: /usr/bin/nmap cap_net_raw=ep

# 4. Configure scope (edit config.yaml — set your allowed CIDRs)
# 5. Register with mcporter (see mcporter.json entry below)

mcporter.json Entry

{
  "nmap": {
    "command": "python3",
    "args": ["-u", "/path/to/nmap-mcp/server.py"],
    "type": "stdio",
    "env": {
      "NMAP_CONFIG": "/path/to/nmap-mcp/config.yaml"
    }
  }
}

Configuration (config.yaml)

# Scope enforcement — targets outside these CIDRs are rejected
allowed_cidrs:
  - "127.0.0.0/8"
  - "192.168.1.0/24"   # your local network

# Paths (defaults to relative paths if omitted)
audit_log: "./audit.log"
scan_dir: "./scans"
nmap_bin: "/usr/bin/nmap"

# Timeouts in seconds
timeouts:
  quick: 120
  standard: 300
  deep: 600

Tools

Tool	Purpose	Privileges
`nmap_ping_scan`	ICMP+TCP host discovery	none
`nmap_arp_discovery`	ARP host discovery (LAN)	cap_net_raw
`nmap_top_ports`	Fast scan of N common ports	none
`nmap_syn_scan`	SYN half-open port scan	cap_net_raw
`nmap_tcp_scan`	Full TCP connect port scan	none
`nmap_udp_scan`	UDP port scan	cap_net_raw
`nmap_service_detection`	Service/version detection	none
`nmap_os_detection`	OS fingerprinting	cap_net_raw
`nmap_script_scan`	Run named NSE scripts	none
`nmap_vuln_scan`	Run vuln NSE category	none
`nmap_full_recon`	SYN+service+OS+scripts	cap_net_raw
`nmap_custom_scan`	Arbitrary flags (scoped+logged)	varies
`nmap_list_scans`	List recent saved scans	none
`nmap_get_scan`	Retrieve scan by ID	none

Running Tests

python3 -m pytest tests/ -v
# 28 tests covering scope enforcement, audit logging,
# scan persistence, injection guards, and live scans

---name: nmap-mcpdescription: Network scanning MCP server wrapping nmap. Provides 14 purpose-built tools for host discovery, port scanning (SYN/TCP/UDP), service & OS detection, NSE script execution, and vulnerability scanning. Returns structured JSON output. Includes scope enforcement (CIDR allowlist), audit logging, and scan persistence. Use when performing network security audits, asset discovery, or recon on authorized networks.---# nmap-mcp SkillMCP server that exposes nmap as structured tools with scope enforcement,audit logging, and persistent scan results.## Prerequisites- nmap installed (`/usr/bin/nmap` or configure path in `config.yaml`)- Python 3.10+ with `fastmcp`, `python-nmap`, `pyyaml`- For SYN/OS/ARP scans: `cap_net_raw` capability on the nmap binary (see Setup)## Setup```bash# 1. Install Python dependenciespip install fastmcp python-nmap pyyaml# 2. Grant nmap raw socket capability (required for SYN + OS detection)# Only needs to be done once. Re-run after nmap upgrades.sudo setcap cap_net_raw+ep $(which nmap)# 3. Verify it workedgetcap $(which nmap)# Expected: /usr/bin/nmap cap_net_raw=ep# 4. Configure scope (edit config.yaml — set your allowed CIDRs)# 5. Register with mcporter (see mcporter.json entry below)```## mcporter.json Entry```json{ "nmap": { "command": "python3", "args": ["-u", "/path/to/nmap-mcp/server.py"], "type": "stdio", "env": { "NMAP_CONFIG": "/path/to/nmap-mcp/config.yaml" } }}```## Configuration (config.yaml)```yaml# Scope enforcement — targets outside these CIDRs are rejectedallowed_cidrs: - "127.0.0.0/8" - "192.168.1.0/24" # your local network# Paths (defaults to relative paths if omitted)audit_log: "./audit.log"scan_dir: "./scans"nmap_bin: "/usr/bin/nmap"# Timeouts in secondstimeouts: quick: 120 standard: 300 deep: 600```## Tools| Tool | Purpose | Privileges ||------|---------|-----------|| `nmap_ping_scan` | ICMP+TCP host discovery | none || `nmap_arp_discovery` | ARP host discovery (LAN) | cap_net_raw || `nmap_top_ports` | Fast scan of N common ports | none || `nmap_syn_scan` | SYN half-open port scan | cap_net_raw || `nmap_tcp_scan` | Full TCP connect port scan | none || `nmap_udp_scan` | UDP port scan | cap_net_raw || `nmap_service_detection` | Service/version detection | none || `nmap_os_detection` | OS fingerprinting | cap_net_raw || `nmap_script_scan` | Run named NSE scripts | none || `nmap_vuln_scan` | Run vuln NSE category | none || `nmap_full_recon` | SYN+service+OS+scripts | cap_net_raw || `nmap_custom_scan` | Arbitrary flags (scoped+logged) | varies || `nmap_list_scans` | List recent saved scans | none || `nmap_get_scan` | Retrieve scan by ID | none |## Running Tests```bashpython3 -m pytest tests/ -v# 28 tests covering scope enforcement, audit logging,# scan persistence, injection guards, and live scans```

Frequently asked questions