feat(everything): add tool annotations to reference implementation

src/everything/tools/echo.ts

@@ -13,6 +13,11 @@ const config = {
   title: "Echo Tool",
   description: "Echoes back the input string",
   inputSchema: EchoSchema,
+  annotations: {
+    readOnlyHint: true,
+    destructiveHint: false,
+    idempotentHint: true,
+  },
 };
 
 /**

src/everything/tools/get-annotated-message.ts

@@ -21,6 +21,11 @@ const config = {
   description:
     "Demonstrates how annotations can be used to provide metadata about content.",
   inputSchema: GetAnnotatedMessageSchema,
+  annotations: {
+    readOnlyHint: true,
+    destructiveHint: false,
+    idempotentHint: true,
+  },
 };
 
 /**

src/everything/tools/get-env.ts

@@ -8,6 +8,11 @@ const config = {
   description:
     "Returns all environment variables, helpful for debugging MCP server configuration",
   inputSchema: {},
+  annotations: {
+    readOnlyHint: true,
+    destructiveHint: false,
+    idempotentHint: true,
+  },
 };
 
 /**

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

@@ -26,6 +26,11 @@ const config = {
   description:
     "Returns structured content along with an output schema for client data validation",
   inputSchema: GetStructuredContentInputSchema,
+  annotations: {
+    readOnlyHint: true,
+    destructiveHint: false,
+    idempotentHint: true,
+  },
   outputSchema: GetStructuredContentOutputSchema,
 };
 

src/everything/tools/get-sum.ts

@@ -14,6 +14,11 @@ const config = {
   title: "Get Sum Tool",
   description: "Returns the sum of two numbers",
   inputSchema: GetSumSchema,
+  annotations: {
+    readOnlyHint: true,
+    destructiveHint: false,
+    idempotentHint: true,
+  },
 };
 
 /**

src/everything/tools/get-tiny-image.ts

@@ -11,6 +11,11 @@ const config = {
   title: "Get Tiny Image Tool",
   description: "Returns a tiny MCP logo image.",
   inputSchema: {},
+  annotations: {
+    readOnlyHint: true,
+    destructiveHint: false,
+    idempotentHint: true,
+  },
 };
 
 /**

src/everything/tools/toggle-simulated-logging.ts

@@ -11,6 +11,11 @@ const config = {
   title: "Toggle Simulated Logging",
   description: "Toggles simulated, random-leveled logging on or off.",
   inputSchema: {},
+  annotations: {
+    readOnlyHint: false,
+    destructiveHint: false,
+    idempotentHint: false,
+  },
 };
 
 // Track enabled clients by session id