diff --git a/worker.ts b/worker.ts
index 2b744b1..a6ec853 100755
--- a/worker.ts
+++ b/worker.ts
@@ -601,6 +601,11 @@ async function handleMcp(request: Request) {
             },
             required: ["id"],
           },
+          annotations: {
+            readOnlyHint: true,
+            destructiveHint: false,
+            openWorldHint: true,
+          },
         },
         {
           name: "getApiOperation",
@@ -621,6 +626,11 @@ async function handleMcp(request: Request) {
             },
             required: ["id", "operationIdOrRoute"],
           },
+          annotations: {
+            readOnlyHint: true,
+            destructiveHint: false,
+            openWorldHint: true,
+          },
         },
       ];