Update @modelcontextprotocol/sdk to 1.23.0 in TypeScript servers (#3065)

Update the SDK from ^1.19.1 to ^1.23.0 in all TypeScript reference servers:
- everything
- filesystem
- memory
- sequentialthinking

Also update everything server for SDK breaking changes:
- Update zod to ^3.25.0 (zod v4 compatibility)
- Fix ToolInput/ToolOutput types to use Tool["inputSchema"] instead of
  inferring from zod schemas
- Fix result.content handling to support array format

Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com>

src/everything/everything.ts

@@ -20,7 +20,6 @@ import {
   ServerRequest,
   SubscribeRequestSchema,
   Tool,
-  ToolSchema,
   UnsubscribeRequestSchema,
   type Root
 } from "@modelcontextprotocol/sdk/types.js";
@@ -35,11 +34,8 @@ const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
 const instructions = readFileSync(join(__dirname, "instructions.md"), "utf-8");
 
-const ToolInputSchema = ToolSchema.shape.inputSchema;
-type ToolInput = z.infer<typeof ToolInputSchema>;
-
-const ToolOutputSchema = ToolSchema.shape.outputSchema;
-type ToolOutput = z.infer<typeof ToolOutputSchema>;
+type ToolInput = Tool["inputSchema"];
+type ToolOutput = Tool["outputSchema"];
 
 type SendRequest = RequestHandlerExtra<ServerRequest, ServerNotification>["sendRequest"];
 
@@ -621,7 +617,7 @@ export const createServer = () => {
       );
       return {
         content: [
-          { type: "text", text: `LLM sampling result: ${result.content.text}` },
+          { type: "text", text: `LLM sampling result: ${Array.isArray(result.content) ? result.content.map(c => c.type === "text" ? c.text : JSON.stringify(c)).join("") : (result.content.type === "text" ? result.content.text : JSON.stringify(result.content))}` },
         ],
       };
     }

src/everything/package.json

@@ -22,11 +22,11 @@
     "start:streamableHttp": "node dist/streamableHttp.js"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.19.1",
+    "@modelcontextprotocol/sdk": "^1.23.0",
     "cors": "^2.8.5",
     "express": "^4.21.1",
     "jszip": "^3.10.1",
-    "zod": "^3.23.8",
+    "zod": "^3.25.0",
     "zod-to-json-schema": "^3.23.5"
   },
   "devDependencies": {

src/filesystem/package.json

@@ -20,7 +20,7 @@
     "test": "vitest run --coverage"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.19.1",
+    "@modelcontextprotocol/sdk": "^1.23.0",
     "diff": "^5.1.0",
     "glob": "^10.3.10",
     "minimatch": "^10.0.1",

src/memory/package.json

@@ -20,7 +20,7 @@
     "test": "vitest run --coverage"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.19.1"
+    "@modelcontextprotocol/sdk": "^1.23.0"
   },
   "devDependencies": {
     "@types/node": "^22",

src/sequentialthinking/package.json

@@ -20,7 +20,7 @@
     "test": "vitest run --coverage"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.19.1",
+    "@modelcontextprotocol/sdk": "^1.23.0",
     "chalk": "^5.3.0",
     "yargs": "^17.7.2"
   },