MCP Gemini Server

import { z } from "zod"; export const TOOL_NAME = "exampleTool"; export const TOOL_DESCRIPTION = "An example tool that takes a name and returns a greeting message. Demonstrates the basic structure of an MCP tool using Zod for parameter definition."; // Define parameters using Zod for validation and description generation // We need to define this as a raw object with Zod validators (not wrapped in z.object) // to be compatible with the MCP server.tool() method export const TOOL_PARAMS = { name: z .string() .min(1, { message: "Name cannot be empty." }) .max(50, { message: "Name cannot exceed 50 characters." }) .describe( "The name to include in the greeting message. Required, 1-50 characters." ), // Example optional parameter language: z .enum(["en", "es", "fr"]) .optional() .describe( "Optional language code for the greeting (e.g., 'en', 'es', 'fr'). Defaults to 'en' if not provided or invalid." ), }; // For internal validation within the tool, we can create a complete schema export const exampleToolSchema = z.object(TOOL_PARAMS);