menese_prices

Instructions

Implementation Reference

• src/tools/prices.ts:42-84 (handler)

  The handler implementation for the menese_prices tool, which fetches prices from CoinGecko.

  async ({ tokens }) => {
    const ids = tokens
      .map((t) => COINGECKO_IDS[t.toLowerCase()])
      .filter(Boolean);
  
    if (ids.length === 0) {
      return {
        content: [{ type: "text" as const, text: "No recognized tokens. Try: BTC, ETH, SOL, ICP, etc." }],
        isError: true,
      };
    }
  
    const idStr = [...new Set(ids)].sort().join(",");
    const prices = await cacheFetch(
      CacheKeys.prices(idStr),
      TTL.PRICES,
      async () => {
        const url = `https://api.coingecko.com/api/v3/simple/price?ids=${idStr}&vs_currencies=usd&include_24hr_change=true`;
        const res = await fetch(url);
        if (!res.ok) throw new Error(`CoinGecko API error: ${res.status}`);
        return res.json() as Promise<Record<string, { usd: number; usd_24h_change?: number }>>;
      },
    );
  
    // Map back to user's token symbols
    const result: Record<string, { usd: number; change24h?: number }> = {};
    for (const token of tokens) {
      const id = COINGECKO_IDS[token.toLowerCase()];
      if (id && prices[id]) {
        result[token.toUpperCase()] = {
          usd: prices[id].usd,
          change24h: prices[id].usd_24h_change,
        };
      }
    }
  
    return {
      content: [{
        type: "text" as const,
        text: JSON.stringify(result, null, 2),
      }],
    };
  },

• src/tools/prices.ts:34-40 (schema)

  The input schema and tool description for menese_prices.

  {
    description:
      "Get current USD prices for crypto tokens. Supports: BTC, ETH, SOL, ICP, MATIC, BNB, " +
      "ADA, XRP, SUI, TON, APT, NEAR, TRX, LTC, RUNE, CLOAK, USDC, USDT, and more.",
    inputSchema: {
      tokens: z.array(z.string()).min(1).max(20).describe("Token symbols (e.g. ['BTC', 'ETH', 'SOL'])"),
    },

• src/tools/prices.ts:31-86 (registration)

  Registration function for the menese_prices tool.

  export function registerPricesTool(server: McpServer): void {
    server.registerTool(
      "menese_prices",
      {
        description:
          "Get current USD prices for crypto tokens. Supports: BTC, ETH, SOL, ICP, MATIC, BNB, " +
          "ADA, XRP, SUI, TON, APT, NEAR, TRX, LTC, RUNE, CLOAK, USDC, USDT, and more.",
        inputSchema: {
          tokens: z.array(z.string()).min(1).max(20).describe("Token symbols (e.g. ['BTC', 'ETH', 'SOL'])"),
        },
      },
      async ({ tokens }) => {
        const ids = tokens
          .map((t) => COINGECKO_IDS[t.toLowerCase()])
          .filter(Boolean);
  
        if (ids.length === 0) {
          return {
            content: [{ type: "text" as const, text: "No recognized tokens. Try: BTC, ETH, SOL, ICP, etc." }],
            isError: true,
          };
        }
  
        const idStr = [...new Set(ids)].sort().join(",");
        const prices = await cacheFetch(
          CacheKeys.prices(idStr),
          TTL.PRICES,
          async () => {
            const url = `https://api.coingecko.com/api/v3/simple/price?ids=${idStr}&vs_currencies=usd&include_24hr_change=true`;
            const res = await fetch(url);
            if (!res.ok) throw new Error(`CoinGecko API error: ${res.status}`);
            return res.json() as Promise<Record<string, { usd: number; usd_24h_change?: number }>>;
          },
        );
  
        // Map back to user's token symbols
        const result: Record<string, { usd: number; change24h?: number }> = {};
        for (const token of tokens) {
          const id = COINGECKO_IDS[token.toLowerCase()];
          if (id && prices[id]) {
            result[token.toUpperCase()] = {
              usd: prices[id].usd,
              change24h: prices[id].usd_24h_change,
            };
          }
        }
  
        return {
          content: [{
            type: "text" as const,
            text: JSON.stringify(result, null, 2),
          }],
        };
      },
    );
  }