MCP Server

Instructions

Implementation Reference

• src/index.ts:31-42 (handler)

  The asynchronous handler function that implements the core logic of the 'greet' tool. It generates a personalized greeting based on the provided name and optional politeness level (formal or informal).

  async ({ name, politeness }) => {
      console.error(`Executing greet tool for: ${name}, Politeness: ${politeness}`);
      let greeting = "";
      if (politeness === "formal") {
          greeting = `Esteemed greetings to you, ${name}. It is a pleasure.`;
      } else {
          greeting = `Hey ${name}! What's up?`;
      }
      return {
          content: [{ type: "text", text: greeting }],
      };
  }

• src/index.ts:27-30 (schema)

  The input schema for the 'greet' tool, defining parameters 'name' (required string) and 'politeness' (optional enum: formal/informal, defaults to informal). Uses Zod for validation.

  {
      name: z.string().describe("The name of the person to greet."),
      politeness: z.enum(["formal", "informal"]).optional().default("informal").describe("Desired politeness level."),
  },

• src/index.ts:24-43 (registration)

  The registration of the 'greet' tool on the MCP server using server.tool(), including name, description, input schema, and handler function.

  server.tool(
      "greet",
      "Generates a personalized greeting.",
      {
          name: z.string().describe("The name of the person to greet."),
          politeness: z.enum(["formal", "informal"]).optional().default("informal").describe("Desired politeness level."),
      },
      async ({ name, politeness }) => {
          console.error(`Executing greet tool for: ${name}, Politeness: ${politeness}`);
          let greeting = "";
          if (politeness === "formal") {
              greeting = `Esteemed greetings to you, ${name}. It is a pleasure.`;
          } else {
              greeting = `Hey ${name}! What's up?`;
          }
          return {
              content: [{ type: "text", text: greeting }],
          };
      }
  );