Weather MCP Server

Instructions

Implementation Reference

• index.js:115-145 (handler)

  The main handler function for the 'send_notification' tool. It executes an AppleScript via child_process to display a macOS notification dialog with the given title and message.

  async sendNotification(title, message) {
      try {
          const { exec } = await import('child_process');
          const { promisify } = await import('util');
          const execAsync = promisify(exec);
  
          const combinedMessage = `${title}\\n\\n${message}`;
          const script = `osascript -e 'tell application "System Events" to display dialog "${combinedMessage}" with title "Weather Update" buttons {"OK"} default button "OK" giving up after 10'`;
  
          console.error("Executing:", script);
          await execAsync(script);
  
          return {
              content: [
                  {
                      type: "text",
                      text: `✅ Weather dialog displayed!\nTitle: ${title}\nMessage: ${message}`,
                  },
              ],
          };
      } catch (error) {
          return {
              content: [
                  {
                      type: "text",
                      text: `❌ Failed: ${error.message}`,
                  },
              ],
          };
      }
  }

• index.js:48-65 (registration)

  Tool registration in the ListTools response, defining the name, description, and input schema for 'send_notification'.

  {
      name: "send_notification",
      description: "Send a macOS notification with provided weather data",
      inputSchema: {
          type: "object",
          properties: {
              title: {
                  type: "string",
                  description: "Notification title",
              },
              message: {
                  type: "string",
                  description: "Notification message",
              },
          },
          required: ["title", "message"],
      },
  },

• index.js:77-79 (handler)

  Dispatch logic in the CallToolRequest handler that routes calls to the sendNotification method.

  if (name === "send_notification") {
      return await this.sendNotification(args.title, args.message);
  }

• index.js:51-64 (schema)

  Input schema definition for the 'send_notification' tool, specifying title and message as required strings.

  inputSchema: {
      type: "object",
      properties: {
          title: {
              type: "string",
              description: "Notification title",
          },
          message: {
              type: "string",
              description: "Notification message",
          },
      },
      required: ["title", "message"],
  },