Shodan MCP Server (stdio)

Model Context Protocol (MCP) server integration for Shodan API, enabling Claude AI to perform comprehensive security reconnaissance, vulnerability assessment, and threat intelligence gathering.

Features

• Comprehensive Host Search: Search Shodan's database of internet-connected devices

• Detailed Host Information: Get in-depth data about specific IP addresses

• DNS Operations: Forward and reverse DNS lookups

• Vulnerability Discovery: Find hosts with specific CVEs and security issues

• Exploit Database: Search for available exploits

• API Management: Monitor query credits and usage

• Protocol/Port Information: Access Shodan's supported protocols and ports

Prerequisites

• Node.js 18.0.0 or higher

• Shodan API key (Get one here)

• Claude Desktop or compatible MCP client

Installation

1. Clone and Install Dependencies

cd /path/to/shodan-mcp-server
npm install

2. Get Shodan API Key

1. Sign up at shodan.io

2. Navigate to Account

3. Copy your API key

3. Configure Environment

Create a .env file:

echo "SHODAN_API_KEY=your_api_key_here" > .env

4. Configure Claude Desktop

Add to your Claude Desktop configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Linux: ~/.config/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "shodan": {
      "command": "node",
      "args": ["/path/to/shodan-mcp-server/src/index.js"],
      "env": {
        "SHODAN_API_KEY": "your_api_key_here"
      }
    }
  }
}

Available Tools

shodan_host_search

Search Shodan for hosts matching a query.

Parameters:

• query (required): Shodan search query

• facets (optional): Comma-separated facets for aggregation

• page (optional): Page number for pagination

Example:

Query: "apache country:US"
Facets: "country,org,port"

shodan_host_info

Get detailed information about a specific IP address.

Parameters:

• ip (required): IP address to lookup

• history (optional): Include historical data

Example:

IP: "8.8.8.8"
History: true

shodan_dns_lookup

Resolve domain names to IP addresses.

Parameters:

• hostnames (required): Array of hostnames

Example:

Hostnames: ["example.com", "google.com"]

shodan_dns_reverse

Perform reverse DNS lookup on IP addresses.

Parameters:

• ips (required): Array of IP addresses

Example:

IPs: ["8.8.8.8", "1.1.1.1"]

shodan_api_info

Get information about your API plan and remaining credits.

Parameters: None

shodan_exploits_search

Search the Shodan Exploits database.

Parameters:

• query (required): Search query

• facets (optional): Facets for aggregation

• page (optional): Page number

Example:

Query: "CVE-2021-44228"
Facets: "type,platform"

shodan_ports

Get list of ports that Shodan crawls.

Parameters: None

shodan_protocols

Get supported protocols for querying.

Parameters: None

shodan_count

Get total count of results for a query without returning data.

Parameters:

• query (required): Shodan search query

• facets (optional): Facets for aggregated counts

shodan_query_search

Search for saved community queries.

Parameters:

• query (required): Search term

• page (optional): Page number

shodan_query_tags

Get popular tags for saved queries.

Parameters:

• size (optional): Number of tags to return (default: 10)

Shodan Query Syntax

Basic Filters

city:"San Francisco"          - Filter by city
country:US                    - Filter by country code
org:"Google"                  - Filter by organization
net:192.168.0.0/24           - Filter by IP range
port:22                       - Filter by port
product:Apache               - Filter by product name
version:2.4.1                - Filter by version
os:"Windows 10"              - Filter by operating system

Vulnerability Filters

vuln:CVE-2021-44228          - Search for specific CVE
vuln:CVE-2020-*              - Search for CVEs from 2020

HTTP Filters

http.title:"Admin Panel"      - Filter by page title
http.html:"password"          - Search in HTML content
http.status:200               - Filter by HTTP status
http.component:"wordpress"    - Filter by web component

SSL Filters

ssl:"example.com"             - Search by SSL certificate
ssl.cert.expired:true         - Find expired certificates
ssl.version:sslv2            - Filter by SSL version
ssl.cipher:export            - Find weak ciphers

Combining Filters

port:22 country:US org:"Amazon"
apache city:"Los Angeles" vuln:CVE-2021-44228

Usage Examples

1. Asset Discovery

// Find all assets for an organization
{
  "query": "org:\"Example Corp\"",
  "facets": "country,port,product"
}

2. Vulnerability Assessment

// Find systems vulnerable to Log4Shell
{
  "query": "vuln:CVE-2021-44228 country:US",
  "page": 1
}

3. Threat Intelligence

// Find potential C2 infrastructure
{
  "query": "product:\"Cobalt Strike\"",
  "facets": "country,org"
}

4. DNS Investigation

// Resolve multiple domains
{
  "hostnames": [
    "example.com",
    "suspicious-domain.com"
  ]
}

5. Exploit Research

// Find exploits for a CVE
{
  "query": "CVE-2021-44228",
  "facets": "type,platform,author"
}

Skills

Three comprehensive skills are included:

1. shodan-recon

Perform reconnaissance and asset discovery. Automates the process of:

• DNS enumeration

• Asset discovery

• Port and service enumeration

• Detailed host analysis

• Comprehensive reporting

2. shodan-vuln-scan

Identify and assess vulnerabilities. Includes:

• CVE discovery

• Exploit availability checking

• Risk assessment

• Remediation recommendations

• Vulnerability matrix generation

3. shodan-threat-intel

Gather threat intelligence. Capabilities:

• C2 infrastructure tracking

• Phishing infrastructure identification

• Malware distribution point discovery

• IOC enrichment

• Threat actor tracking

• Temporal analysis

Development

Running in Development

npm run dev

Testing Tools

# Test the server manually
node src/index.js

# In another terminal, send test requests
# (requires MCP client for full testing)

Adding New Tools

1. Add tool definition to TOOLS array in src/index.js

2. Add case handler in CallToolRequestSchema handler

3. Update README with new tool documentation

Resources

• Shodan Official Documentation

• Shodan Search Query Guide

• Shodan Filters Reference

• MCP Protocol Documentation