Shodan MCP Server

Instructions

Implementation Reference

• src/index.ts:137-150 (handler)

  Core handler function in ShodanClient that fetches detailed information about a specific IP address from the Shodan API endpoint /shodan/host/{ip}, applies response sampling and field filtering.
  async getHostInfo(ip: string, maxItems: number = 5, selectedFields?: string[]): Promise<any> { try { const response = await this.axiosInstance.get(`/shodan/host/${ip}`); return this.sampleResponse(response.data, maxItems, selectedFields); } catch (error: unknown) { if (axios.isAxiosError(error)) { throw new McpError( ErrorCode.InternalError, `Shodan API error: ${error.response?.data?.error || error.message}` ); } throw error; } }
• src/index.ts:1284-1315 (handler)

  MCP server tool handler for 'get_host_info' that validates input parameters, calls ShodanClient.getHostInfo, and formats the response as MCP content.
  case "get_host_info": { const ip = String(request.params.arguments?.ip); if (!ip) { throw new McpError( ErrorCode.InvalidParams, "IP address is required" ); } const maxItems = Number(request.params.arguments?.max_items) || 5; const fields = Array.isArray(request.params.arguments?.fields) ? request.params.arguments?.fields.map(String) : undefined; try { const hostInfo = await shodanClient.getHostInfo(ip, maxItems, fields); return { content: [{ type: "text", text: JSON.stringify(hostInfo, null, 2) }] }; } catch (error) { if (error instanceof McpError) { throw error; } throw new McpError( ErrorCode.InternalError, `Error getting host info: ${(error as Error).message}` ); } }
• src/index.ts:879-902 (schema)

  Input schema definition and tool metadata registration for 'get_host_info' in the ListTools response, including parameters ip (required), max_items, and fields.
  name: "get_host_info", description: "Get detailed information about a specific IP address", inputSchema: { type: "object", properties: { ip: { type: "string", description: "IP address to look up" }, max_items: { type: "number", description: "Maximum number of items to include in arrays (default: 5)" }, fields: { type: "array", items: { type: "string" }, description: "List of fields to include in the results (e.g., ['ip_str', 'ports', 'location.country_name'])" } }, required: ["ip"] } },
• src/index.ts:875-1281 (registration)

  Registration of all tools including 'get_host_info' via setRequestHandler for ListToolsRequestSchema.
  server.setRequestHandler(ListToolsRequestSchema, async () => { return { tools: [ { name: "get_host_info", description: "Get detailed information about a specific IP address", inputSchema: { type: "object", properties: { ip: { type: "string", description: "IP address to look up" }, max_items: { type: "number", description: "Maximum number of items to include in arrays (default: 5)" }, fields: { type: "array", items: { type: "string" }, description: "List of fields to include in the results (e.g., ['ip_str', 'ports', 'location.country_name'])" } }, required: ["ip"] } }, { name: "search_shodan", description: "Search Shodan's database for devices and services", inputSchema: { type: "object", properties: { query: { type: "string", description: "Shodan search query (e.g., 'apache country:US')" }, page: { type: "number", description: "Page number for results pagination (default: 1)" }, facets: { type: "array", items: { type: "string" }, description: "List of facets to include in the search results (e.g., ['country', 'org'])" }, max_items: { type: "number", description: "Maximum number of items to include in arrays (default: 5)" }, fields: { type: "array", items: { type: "string" }, description: "List of fields to include in the results (e.g., ['ip_str', 'ports', 'location.country_name'])" }, summarize: { type: "boolean", description: "Whether to return a summary of the results instead of the full data (default: false)" } }, required: ["query"] } }, { name: "scan_network_range", description: "Scan a network range (CIDR notation) for devices", inputSchema: { type: "object", properties: { cidr: { type: "string", description: "Network range in CIDR notation (e.g., 192.168.1.0/24)" }, max_items: { type: "number", description: "Maximum number of items to include in results (default: 5)" }, fields: { type: "array", items: { type: "string" }, description: "List of fields to include in the results (e.g., ['ip_str', 'ports', 'location.country_name'])" } }, required: ["cidr"] } }, { name: "get_ssl_info", description: "Get SSL certificate information for a domain", inputSchema: { type: "object", properties: { domain: { type: "string", description: "Domain name to look up SSL certificates for (e.g., example.com)" } }, required: ["domain"] } }, { name: "search_iot_devices", description: "Search for specific types of IoT devices", inputSchema: { type: "object", properties: { device_type: { type: "string", description: "Type of IoT device to search for (e.g., 'webcam', 'router', 'smart tv')" }, country: { type: "string", description: "Optional country code to limit search (e.g., 'US', 'DE')" }, max_items: { type: "number", description: "Maximum number of items to include in results (default: 5)" } }, required: ["device_type"] } }, { name: "get_host_count", description: "Get the count of hosts matching a search query without consuming query credits", inputSchema: { type: "object", properties: { query: { type: "string", description: "Shodan search query to count hosts for" }, facets: { type: "array", items: { type: "string" }, description: "List of facets to include in the count results (e.g., ['country', 'org'])" } }, required: ["query"] } }, { name: "list_search_facets", description: "List all available search facets that can be used with Shodan queries", inputSchema: { type: "object", properties: {} } }, { name: "list_search_filters", description: "List all available search filters that can be used in Shodan queries", inputSchema: { type: "object", properties: {} } }, { name: "parse_search_tokens", description: "Parse a search query to understand which filters and parameters are being used", inputSchema: { type: "object", properties: { query: { type: "string", description: "Shodan search query to parse and analyze" } }, required: ["query"] } }, { name: "list_ports", description: "List all ports that Shodan crawls on the Internet", inputSchema: { type: "object", properties: {} } }, { name: "list_protocols", description: "List all protocols that can be used when performing on-demand Internet scans", inputSchema: { type: "object", properties: {} } }, { name: "get_api_info", description: "Get information about your API plan including credits and limits", inputSchema: { type: "object", properties: {} } }, { name: "get_my_ip", description: "Get your current IP address as seen from the Internet", inputSchema: { type: "object", properties: {} } }, { name: "dns_lookup", description: "Resolve hostnames to IP addresses using DNS lookup", inputSchema: { type: "object", properties: { hostnames: { type: "array", items: { type: "string" }, description: "List of hostnames to resolve (e.g., ['google.com', 'facebook.com'])" } }, required: ["hostnames"] } }, { name: "reverse_dns_lookup", description: "Get hostnames for IP addresses using reverse DNS lookup", inputSchema: { type: "object", properties: { ips: { type: "array", items: { type: "string" }, description: "List of IP addresses to lookup (e.g., ['8.8.8.8', '1.1.1.1'])" } }, required: ["ips"] } }, { name: "get_domain_info", description: "Get comprehensive domain information including subdomains and DNS records", inputSchema: { type: "object", properties: { domain: { type: "string", description: "Domain name to lookup (e.g., 'google.com')" }, history: { type: "boolean", description: "Include historical DNS data (default: false)" }, type: { type: "string", description: "DNS record type filter (A, AAAA, CNAME, NS, SOA, MX, TXT)" }, page: { type: "number", description: "Page number for pagination (default: 1)" } }, required: ["domain"] } }, { name: "get_account_profile", description: "Get account profile information including membership status and credits", inputSchema: { type: "object", properties: {} } }, { name: "get_cve_info", description: "Get detailed information about a specific CVE", inputSchema: { type: "object", properties: { cve_id: { type: "string", description: "CVE ID to look up (e.g., 'CVE-2021-44228')" } }, required: ["cve_id"] } }, { name: "search_cves", description: "Search for vulnerabilities with various filters", inputSchema: { type: "object", properties: { cpe23: { type: "string", description: "CPE 2.3 string to search for (e.g., 'cpe:2.3:a:apache:log4j:*')" }, product: { type: "string", description: "Product name to search for vulnerabilities (e.g., 'apache', 'windows')" }, is_kev: { type: "boolean", description: "Filter for Known Exploited Vulnerabilities only" }, sort_by_epss: { type: "boolean", description: "Sort results by EPSS score (Exploit Prediction Scoring System)" }, start_date: { type: "string", description: "Start date for filtering CVEs (YYYY-MM-DD format)" }, end_date: { type: "string", description: "End date for filtering CVEs (YYYY-MM-DD format)" }, limit: { type: "number", description: "Maximum number of results to return (default: 10)" }, skip: { type: "number", description: "Number of results to skip for pagination (default: 0)" } } } }, { name: "get_cpes", description: "Get Common Platform Enumeration (CPE) information for products", inputSchema: { type: "object", properties: { product: { type: "string", description: "Product name to search for (e.g., 'apache', 'windows')" }, vendor: { type: "string", description: "Vendor name to filter by (e.g., 'microsoft', 'apache')" }, version: { type: "string", description: "Version to filter by (e.g., '2.4.1')" }, limit: { type: "number", description: "Maximum number of results to return (default: 10)" }, skip: { type: "number", description: "Number of results to skip for pagination (default: 0)" } } } }, { name: "get_newest_cves", description: "Get the newest vulnerabilities from the CVE database", inputSchema: { type: "object", properties: { limit: { type: "number", description: "Maximum number of results to return (default: 10)" } } } }, { name: "get_kev_cves", description: "Get Known Exploited Vulnerabilities (KEV) from CISA", inputSchema: { type: "object", properties: { limit: { type: "number", description: "Maximum number of results to return (default: 10)" } } } }, { name: "get_cves_by_epss", description: "Get CVEs sorted by EPSS score (Exploit Prediction Scoring System)", inputSchema: { type: "object", properties: { limit: { type: "number", description: "Maximum number of results to return (default: 10)" } } } } ] }; });
• src/index.ts:52-84 (helper)

  Helper method used by getHostInfo to sample/truncate large arrays in response and filter to specific fields to reduce token usage.
  private sampleResponse(data: any, maxItems: number = 5, selectedFields?: string[]): any { if (!data) return data; // Clone the data to avoid modifying the original const result = JSON.parse(JSON.stringify(data)); // Sample matches array if it exists and is longer than maxItems if (result.matches && Array.isArray(result.matches) && result.matches.length > maxItems) { result.matches = result.matches.slice(0, maxItems); result._sample_note = `Response truncated to ${maxItems} matches. Original count: ${data.matches.length}`; } // Sample data array if it exists and is longer than maxItems if (result.data && Array.isArray(result.data) && result.data.length > maxItems) { result.data = result.data.slice(0, maxItems); result._sample_note = `Response truncated to ${maxItems} data items. Original count: ${data.data.length}`; } // Sample ports array if it exists and is longer than maxItems if (result.ports && Array.isArray(result.ports) && result.ports.length > maxItems) { result.ports = result.ports.slice(0, maxItems); if (!result._sample_note) { result._sample_note = `Ports truncated to ${maxItems} items. Original count: ${data.ports.length}`; } } // Filter fields if selectedFields is provided if (selectedFields && selectedFields.length > 0 && typeof result === 'object') { this.filterFields(result, selectedFields); } return result; }