claw-mcp-toolkit

Instructions

Implementation Reference

• src/modules/crypto.ts:8-15 (handler)

  Registration and handler implementation for the "crypto_price" tool.

  server.tool("crypto_price", "Get current price, market cap, and 24h change for any cryptocurrency", {
    coin: z.string().describe("Coin ID (e.g. bitcoin, ethereum, solana)")
  }, async ({ coin }) => {
    const data = await safeFetch(`https://api.coingecko.com/api/v3/simple/price?ids=${coin}&vs_currencies=usd&include_market_cap=true&include_24hr_change=true&include_24hr_vol=true`);
    const c = data[coin];
    if (!c) return { content: [{ type: "text", text: `Coin "${coin}" not found. Try: bitcoin, ethereum, solana, dogecoin` }] };
    return { content: [{ type: "text", text: `**${coin.toUpperCase()}**\nPrice: ${formatCurrency(c.usd)}\nMarket Cap: ${formatNumber(c.usd_market_cap)}\n24h Change: ${formatPercent(c.usd_24h_change)}\n24h Volume: ${formatNumber(c.usd_24h_vol)}` }] };
  });