get-ticker

Instructions

Implementation Reference

• src/tools/public.ts:35-65 (handler)

  The main handler function for the 'get-ticker' tool. It rate-limits the API call, selects the exchange instance based on market type, uses caching to fetch ticker data via ex.fetchTicker(symbol), and returns formatted JSON response or error.

  }, async ({ exchange, symbol, marketType }) => {
    try {
      return await rateLimiter.execute(exchange, async () => {
        const ex = marketType 
          ? getExchangeWithMarketType(exchange, marketType)
          : getExchange(exchange);
        const cacheKey = `ticker:${exchange}:${marketType || 'spot'}:${symbol}`;
        
        const ticker = await getCachedData(cacheKey, async () => {
          log(LogLevel.INFO, `Fetching ticker for ${symbol} on ${exchange}`);
          return await ex.fetchTicker(symbol);
        });
        
        return {
          content: [{
            type: "text",
            text: JSON.stringify(ticker, null, 2)
          }]
        };
      });
    } catch (error) {
      log(LogLevel.ERROR, `Error fetching ticker: ${error instanceof Error ? error.message : String(error)}`);
      return {
        content: [{
          type: "text",
          text: `Error: ${error instanceof Error ? error.message : String(error)}`
        }],
        isError: true
      };
    }
  });

• src/tools/public.ts:32-34 (schema)

  Input schema using Zod for validating parameters: exchange (string), symbol (string), marketType (optional enum).

  exchange: z.string().describe("Exchange ID (e.g., binance, coinbase)"),
  symbol: z.string().describe("Trading pair symbol (e.g., BTC/USDT)"),
  marketType: z.enum(["spot", "future", "swap", "option", "margin"]).optional().describe("Market type (default: spot)")

• src/tools/public.ts:31-65 (registration)

  The server.tool() registration call for 'get-ticker', including description, schema, and inline handler function within registerPublicTools.

  server.tool("get-ticker", "Get current ticker information for a trading pair", {
    exchange: z.string().describe("Exchange ID (e.g., binance, coinbase)"),
    symbol: z.string().describe("Trading pair symbol (e.g., BTC/USDT)"),
    marketType: z.enum(["spot", "future", "swap", "option", "margin"]).optional().describe("Market type (default: spot)")
  }, async ({ exchange, symbol, marketType }) => {
    try {
      return await rateLimiter.execute(exchange, async () => {
        const ex = marketType 
          ? getExchangeWithMarketType(exchange, marketType)
          : getExchange(exchange);
        const cacheKey = `ticker:${exchange}:${marketType || 'spot'}:${symbol}`;
        
        const ticker = await getCachedData(cacheKey, async () => {
          log(LogLevel.INFO, `Fetching ticker for ${symbol} on ${exchange}`);
          return await ex.fetchTicker(symbol);
        });
        
        return {
          content: [{
            type: "text",
            text: JSON.stringify(ticker, null, 2)
          }]
        };
      });
    } catch (error) {
      log(LogLevel.ERROR, `Error fetching ticker: ${error instanceof Error ? error.message : String(error)}`);
      return {
        content: [{
          type: "text",
          text: `Error: ${error instanceof Error ? error.message : String(error)}`
        }],
        isError: true
      };
    }
  });