[WIP] Refactor everything server to be more modular and use recommended APIs.

Adding get-structured-content tool

* Updated architecture.md

* added get-structured-content.ts
  - Registers the 'get-structured-content' tool with the provided McpServer instance.
  - The registered tool processes incoming arguments using a predefined input schema,
    generates structured content with weather information including temperature,
    conditions, and humidity, and returns both backward-compatible content blocks
    and structured content in the response.

src/everything/tools/get-structured-content.ts

@@ -0,0 +1,87 @@
+import { z } from "zod";
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import {
+  CallToolResult,
+  ContentBlock,
+} from "@modelcontextprotocol/sdk/types.js";
+
+// Tool input schema
+const GetStructuredContentInputSchema = {
+  location: z
+    .enum(["New York", "Chicago", "Los Angeles"])
+    .describe("Choose city"),
+};
+
+// Tool output schema
+const GetStructuredContentOutputSchema = z.object({
+  temperature: z.number().describe("Temperature in celsius"),
+  conditions: z.string().describe("Weather conditions description"),
+  humidity: z.number().describe("Humidity percentage"),
+});
+
+// Tool configuration
+const name = "get-structured-content";
+const config = {
+  title: "Get Structured Content Tool",
+  description:
+    "Returns structured content along with an output schema for client data validation",
+  inputSchema: GetStructuredContentInputSchema,
+  outputSchema: GetStructuredContentOutputSchema,
+};
+
+/**
+ * Registers the 'get-structured-content' tool with the provided McpServer instance.
+ *
+ * The registered tool processes incoming arguments using a predefined input schema,
+ * generates structured content with weather information including temperature,
+ * conditions, and humidity, and returns both backward-compatible content blocks
+ * and structured content in the response.
+ *
+ * The response contains:
+ * - `content`: An array of content blocks, presented as JSON stringified objects.
+ * - `structuredContent`: A JSON structured representation of the weather data.
+ *
+ * @param {McpServer} server - The server instance to which the tool will be registered.
+ */
+export const registerGetStructuredContentTool = (server: McpServer) => {
+  server.registerTool(name, config, async (args): Promise<CallToolResult> => {
+    // Get simulated weather for the chosen city
+    let weather;
+    console.log();
+    switch (args.location) {
+      case "New York":
+        weather = {
+          temperature: 33,
+          conditions: "Cloudy",
+          humidity: 82,
+        };
+        break;
+
+      case "Chicago":
+        weather = {
+          temperature: 36,
+          conditions: "Light rain / drizzle",
+          humidity: 82,
+        };
+        break;
+
+      case "Los Angeles":
+        weather = {
+          temperature: 73,
+          conditions: "Sunny / Clear",
+          humidity: 48,
+        };
+        break;
+    }
+
+    const backwardCompatibleContentBlock: ContentBlock = {
+      type: "text",
+      text: JSON.stringify(weather),
+    };
+
+    return {
+      content: [backwardCompatibleContentBlock],
+      structuredContent: weather,
+    };
+  });
+};

src/everything/tools/index.ts

@@ -10,6 +10,7 @@ import { registerLongRunningOperationTool } from "./long-running-operation.js";
 import { registerSamplingRequestTool } from "./sampling-request.js";
 import { registerToggleLoggingTool } from "./toggle-logging.js";
 import { registerToggleSubscriberUpdatesTool } from "./toggle-subscriber-updates.js";
+import { registerGetStructuredContentTool } from "./get-structured-content.js";
 
 /**
  * Register the tools with the MCP server.
@@ -22,6 +23,7 @@ export const registerTools = (server: McpServer) => {
   registerGetEnvTool(server);
   registerGetResourceLinksTool(server);
   registerGetResourceReferenceTool(server);
+  registerGetStructuredContentTool(server);
   registerGetTinyImageTool(server);
   registerLongRunningOperationTool(server);
   registerSamplingRequestTool(server);