Use content instead of structuredContent in examples

Not all MCP clients support structuredContent in MCP tool results, so
examples now return data as JSON in content and parse it client-side.

Pattern used:
- Server: content: [{ type: "text", text: JSON.stringify(data) }]
- Client: JSON.parse(result.content!.filter(...).map(...).join(""))

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

examples/budget-allocator-server/server.ts

@@ -221,30 +221,6 @@ function generateHistory(
   return months;
 }
 
-// ---------------------------------------------------------------------------
-// Response Formatting
-// ---------------------------------------------------------------------------
-
-function formatBudgetSummary(data: BudgetDataResponse): string {
-  const lines: string[] = [
-    "Budget Allocator Configuration",
-    "==============================",
-    "",
-    `Default Budget: ${data.config.currencySymbol}${data.config.defaultBudget.toLocaleString()}`,
-    `Available Presets: ${data.config.presetBudgets.map((b) => `${data.config.currencySymbol}${b.toLocaleString()}`).join(", ")}`,
-    "",
-    "Categories:",
-    ...data.config.categories.map(
-      (c) => `  - ${c.name}: ${c.defaultPercent}% default`,
-    ),
-    "",
-    `Historical Data: ${data.analytics.history.length} months`,
-    `Benchmark Stages: ${data.analytics.stages.join(", ")}`,
-    `Default Stage: ${data.analytics.defaultStage}`,
-  ];
-  return lines.join("\n");
-}
-
 // ---------------------------------------------------------------------------
 // MCP Server Setup
 // ---------------------------------------------------------------------------
@@ -263,7 +239,6 @@ server.registerTool(
     description:
       "Returns budget configuration with 24 months of historical allocations and industry benchmarks by company stage",
     inputSchema: {},
-    outputSchema: BudgetDataResponseSchema.shape,
     _meta: { [RESOURCE_URI_META_KEY]: resourceUri },
   },
   async (): Promise<CallToolResult> => {
@@ -292,10 +267,9 @@ server.registerTool(
       content: [
         {
           type: "text",
-          text: formatBudgetSummary(response),
+          text: JSON.stringify(response),
         },
       ],
-      structuredContent: response,
     };
   },
 );

examples/budget-allocator-server/src/mcp-app.ts

@@ -606,7 +606,13 @@ const app = new App({ name: "Budget Allocator", version: "1.0.0" });
 
 app.ontoolresult = (result) => {
   log.info("Received tool result:", result);
-  const data = result.structuredContent as unknown as BudgetDataResponse;
+  const text = result
+    .content!.filter(
+      (c): c is { type: "text"; text: string } => c.type === "text",
+    )
+    .map((c) => c.text)
+    .join("");
+  const data = JSON.parse(text) as BudgetDataResponse;
   if (data?.config && data?.analytics) {
     initializeUI(data.config, data.analytics);
   }