groww-mcp

Instructions

Implementation Reference

• src/tools/funds.ts:100-133 (handler)

  The tool 'invest_in_fund' is registered and implemented in 'src/tools/funds.ts' using the 'server.tool' method. It takes an ISIN and amount, validates the amount, and calls the 'growwClient.investInFund' method.

  // ── invest_in_fund ────────────────────────────────────────
  server.tool(
    "invest_in_fund",
    "One-time lumpsum investment in a mutual fund",
    {
      isin: z.string().describe("Mutual fund ISIN code"),
      amount: z.number().positive().describe("Investment amount in INR"),
    },
    async ({ isin, amount }) => {
      try {
        if (amount < 100) return mcpError("Minimum investment amount is ₹100");
  
        const result = await growwClient.investInFund({ isin, amount });
  
        const text = [
          `💰 INVESTMENT SUBMITTED`,
          `${"─".repeat(40)}`,
          `Transaction ID: ${result.transactionId}`,
          `Fund:           ${isin}`,
          `Amount:         ${formatCurrencyExact(amount)}`,
          `NAV:            ${formatCurrencyExact(result.nav)}`,
          `Est. Units:     ${result.units}`,
          `Status:         ${result.status}`,
          ``,
          `${result.message}`,
          ``,
          `⚠️ This is ${process.env.MOCK_MODE === "true" ? "a MOCK investment (no real money)" : "a REAL investment — money will be debited from your account"}`,
        ].join("\n");
        return mcpText(text);
      } catch (err) {
        return mcpError(normalizeError(err));
      }
    }
  );