diff --git a/packages/ai/src/chatTransport.test.ts b/packages/ai/src/chatTransport.test.ts
index 08c001510..6bea5eea2 100644
--- a/packages/ai/src/chatTransport.test.ts
+++ b/packages/ai/src/chatTransport.test.ts
@@ -774,6 +774,17 @@ describe("TriggerChatTransport", function () {
     }).toThrowError("baseURL must not include query parameters or hash fragments");
   });
 
+  it("prioritizes hash validation over credential validation", function () {
+    expect(function () {
+      new TriggerChatTransport({
+        task: "chat-task",
+        accessToken: "pk_trigger",
+        baseURL: "https://user:pass@example.com/base#fragment",
+        stream: "chat-stream",
+      });
+    }).toThrowError("baseURL must not include query parameters or hash fragments");
+  });
+
   it("throws when trimmed baseURL includes username or password credentials", function () {
     expect(function () {
       new TriggerChatTransport({
@@ -3145,6 +3156,17 @@ describe("TriggerChatTransport", function () {
     }).toThrowError("baseURL must not include query parameters or hash fragments");
   });
 
+  it("prioritizes hash validation over credential validation in factory", function () {
+    expect(function () {
+      createTriggerChatTransport({
+        task: "chat-task",
+        accessToken: "pk_trigger",
+        baseURL: "https://user:pass@example.com/base#fragment",
+        stream: "chat-stream",
+      });
+    }).toThrowError("baseURL must not include query parameters or hash fragments");
+  });
+
   it("throws from factory when trimmed baseURL includes username or password credentials", function () {
     expect(function () {
       createTriggerChatTransport({