Binance Cryptocurrency MCP

Implementation Reference

• src/index.ts:23-41 (handler)

  The handler function that executes the get_order_book tool logic. It makes an API call to Binance's /api/v3/depth endpoint with the provided symbol and limit parameters, uses proxy configuration, and returns the order book data as JSON or an error message.

  async (args: { symbol: string; limit?: number }) => {
      try {
          const response = await axios.get(`${BASE_URL}/api/v3/depth`, {
              params: {
                  symbol: args.symbol,
                  limit: args.limit
              },
              ...getProxyConfig(),
          });
          return {
              content: [{ type: "text", text: JSON.stringify(response.data, null, 2) }]
          };
      } catch (error: any) {
          return {
              content: [{ type: "text", text: `Failed to get order book: ${error.message}` }],
              isError: true
          };
      }
  }

• src/index.ts:19-22 (schema)

  Input parameter schema definition using zod validation. Defines 'symbol' as a required string (trading pair) and 'limit' as an optional number (order book depth).

  {
      symbol: z.string().describe("Trading pair symbol, e.g. BTCUSDT"),
      limit: z.number().optional().describe("Order book depth, default 100, max 5000")
  },

• src/index.ts:17-42 (registration)

  Tool registration with the MCP server using server.tool(). Registers the 'get_order_book' tool with its schema and handler function within the registerTools function.

  server.tool(
      "get_order_book",
      {
          symbol: z.string().describe("Trading pair symbol, e.g. BTCUSDT"),
          limit: z.number().optional().describe("Order book depth, default 100, max 5000")
      },
      async (args: { symbol: string; limit?: number }) => {
          try {
              const response = await axios.get(`${BASE_URL}/api/v3/depth`, {
                  params: {
                      symbol: args.symbol,
                      limit: args.limit
                  },
                  ...getProxyConfig(),
              });
              return {
                  content: [{ type: "text", text: JSON.stringify(response.data, null, 2) }]
              };
          } catch (error: any) {
              return {
                  content: [{ type: "text", text: `Failed to get order book: ${error.message}` }],
                  isError: true
              };
          }
      }
  );

• src/index.ts:406-434 (helper)

  Helper function that provides proxy configuration for axios requests. Supports SOCKS5 and HTTP proxies based on environment variables (SOCKS_PROXY, SOCKS5_PROXY, HTTP_PROXY, HTTPS_PROXY).

  function getProxyConfig(): any {
      // 优先使用SOCKS5代理
      if (socksProxyURL) {
          try {
              const agent = new SocksProxyAgent(socksProxyURL);
              return { httpsAgent: agent, httpAgent: agent };
          } catch (error) {
              console.error(`Failed to create SOCKS proxy agent: ${error}`);
          }
      }
      
      // 回退到HTTP代理
      if (httpProxyURL) {
          try {
              const urlInfo = new URL(httpProxyURL);
              return {
                  proxy: {
                      host: urlInfo.hostname,
                      port: parseInt(urlInfo.port) || (urlInfo.protocol === 'https:' ? 443 : 80),
                      protocol: urlInfo.protocol.replace(":", "")
                  }
              };
          } catch (error) {
              console.error(`Failed to parse HTTP proxy URL: ${error}`);
          }
      }
      
      return {};
  }