crypto-mcp

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js"; import { z } from "zod"; // Load environment variables const API_KEY = process.env.COINMARKET_API_KEY; if (!API_KEY) { throw new Error("Missing COINMARKET_API_KEY environment variable"); } // Base CoinMarketCap API URL const BASE_URL = "https://pro-api.coinmarketcap.com/v1"; // Create server instance const server = new McpServer({ name: "coinmarketcap", version: "1.0.0", }); // Helper function for making CoinMarketCap API requests async function makeApiRequest<T>( endpoint: string, params: Record<string, any> = {}, ): Promise<T | null> { const headers = { "X-CMC_PRO_API_KEY": API_KEY as string, Accept: "application/json", }; const url = new URL(`${BASE_URL}${endpoint}`); // Add query parameters Object.entries(params).forEach(([key, value]) => { if (value !== undefined && value !== null) { url.searchParams.append(key, String(value)); } }); try { const response = await fetch(url.toString(), { headers }); if (!response.ok) { throw new Error(`HTTP error! status: ${response.status}`); } return (await response.json()) as T; } catch (error) { console.error("Error making CoinMarketCap API request:", error); return null; } } // Register cryptocurrency listings tool server.tool( "get-cryptocurrency-listings", "Get latest cryptocurrency listings with market data", { start: z.string().optional().describe("Offset (starting with 1)"), limit: z .string() .optional() .describe("Number of results (default: 100, max: 5000)"), sort: z .string() .optional() .describe("What to sort by (e.g., 'market_cap', 'volume_24h')"), sort_dir: z.string().optional().describe("Direction: 'asc' or 'desc'"), cryptocurrency_type: z .string() .optional() .describe("Filter by type (e.g., 'coins', 'tokens')"), convert: z .string() .optional() .describe("Currency to convert prices to (e.g., 'USD', 'EUR')"), }, async (params) => { const defaultParams = { start: "1", limit: "100", convert: "USD", ...params, }; const data = await makeApiRequest( "/cryptocurrency/listings/latest", defaultParams, ); if (!data) { return { content: [ { type: "text", text: "Failed to retrieve cryptocurrency listings", }, ], }; } return { content: [ { type: "text", text: JSON.stringify(data, null, 2), }, ], }; }, ); // Register cryptocurrency quotes tool server.tool( "get-cryptocurrency-quotes", "Get latest quotes for specific cryptocurrencies", { symbol: z .string() .optional() .describe("Comma-separated list of symbols (e.g., 'BTC,ETH')"), slug: z .string() .optional() .describe( "Comma-separated list of slugs (e.g., 'bitcoin,ethereum')", ), id: z .string() .optional() .describe("Comma-separated list of CoinMarketCap IDs"), convert: z .string() .optional() .describe("Currency to convert prices to (e.g., 'USD', 'EUR')"), }, async (params) => { if (!params.symbol && !params.slug && !params.id) { return { content: [ { type: "text", text: "Error: At least one of 'symbol', 'slug', or 'id' is required", }, ], }; } const defaultParams = { convert: "USD", ...params, }; const data = await makeApiRequest( "/cryptocurrency/quotes/latest", defaultParams, ); if (!data) { return { content: [ { type: "text", text: "Failed to retrieve cryptocurrency quotes", }, ], }; } return { content: [ { type: "text", text: JSON.stringify(data, null, 2), }, ], }; }, ); // Register cryptocurrency map tool server.tool( "get-cryptocurrency-map", "Get mapping of all cryptocurrencies to CoinMarketCap IDs", { listing_status: z .string() .optional() .describe("Filter by status (e.g., 'active', 'inactive')"), start: z.string().optional().describe("Offset (starting with 1)"), limit: z .string() .optional() .describe("Number of results (default: 100, max: 5000)"), symbol: z .string() .optional() .describe("Filter by symbol(s) (comma-separated)"), }, async (params) => { const defaultParams = { listing_status: "active", start: "1", limit: "100", ...params, }; const data = await makeApiRequest("/cryptocurrency/map", defaultParams); if (!data) { return { content: [ { type: "text", text: "Failed to retrieve cryptocurrency map", }, ], }; } return { content: [ { type: "text", text: JSON.stringify(data, null, 2), }, ], }; }, ); // Register cryptocurrency info tool server.tool( "get-cryptocurrency-info", "Get metadata for cryptocurrencies", { symbol: z .string() .optional() .describe("Comma-separated list of symbols (e.g., 'BTC,ETH')"), slug: z .string() .optional() .describe( "Comma-separated list of slugs (e.g., 'bitcoin,ethereum')", ), id: z .string() .optional() .describe("Comma-separated list of CoinMarketCap IDs"), }, async (params) => { if (!params.symbol && !params.slug && !params.id) { return { content: [ { type: "text", text: "Error: At least one of 'symbol', 'slug', or 'id' is required", }, ], }; } const data = await makeApiRequest("/cryptocurrency/info", params); if (!data) { return { content: [ { type: "text", text: "Failed to retrieve cryptocurrency info", }, ], }; } return { content: [ { type: "text", text: JSON.stringify(data, null, 2), }, ], }; }, ); // Register global metrics tool server.tool( "get-global-metrics", "Get latest global cryptocurrency market metrics", { convert: z .string() .optional() .describe("Currency to convert prices to (e.g., 'USD', 'EUR')"), }, async (params) => { const defaultParams = { convert: "USD", ...params, }; const data = await makeApiRequest( "/global-metrics/quotes/latest", defaultParams, ); if (!data) { return { content: [ { type: "text", text: "Failed to retrieve global metrics", }, ], }; } return { content: [ { type: "text", text: JSON.stringify(data, null, 2), }, ], }; }, ); // Register exchange listings tool server.tool( "get-exchange-listings", "Get list of all exchanges with market data", { start: z.string().optional().describe("Offset (starting with 1)"), limit: z .string() .optional() .describe("Number of results (default: 100, max: 5000)"), sort: z .string() .optional() .describe("What to sort by (e.g., 'volume_24h')"), sort_dir: z.string().optional().describe("Direction: 'asc' or 'desc'"), market_type: z .string() .optional() .describe("Filter by market type (e.g., 'spot', 'derivatives')"), convert: z .string() .optional() .describe("Currency to convert prices to (e.g., 'USD', 'EUR')"), }, async (params) => { const defaultParams = { start: "1", limit: "100", convert: "USD", ...params, }; const data = await makeApiRequest( "/exchange/listings/latest", defaultParams, ); if (!data) { return { content: [ { type: "text", text: "Failed to retrieve exchange listings", }, ], }; } return { content: [ { type: "text", text: JSON.stringify(data, null, 2), }, ], }; }, ); // Run the server async function main() { const transport = new StdioServerTransport(); await server.connect(transport); console.error("CoinMarketCap MCP Server running on stdio"); } main().catch((error) => { console.error("Fatal error in main():", error); process.exit(1); });