diff --git a/.changeset/cute-places-wear.md b/.changeset/cute-places-wear.md
new file mode 100644
index 00000000000..b8bca049b93
--- /dev/null
+++ b/.changeset/cute-places-wear.md
@@ -0,0 +1,5 @@
+---
+'@clerk/backend': patch
+---
+
+Adds `agentTaskId` and deprecates `taskId` to Agent Tasks Create response.
diff --git a/packages/backend/src/api/__tests__/AgentTaskApi.test.ts b/packages/backend/src/api/__tests__/AgentTaskApi.test.ts
index 8f77842f5f1..5aa1313cdca 100644
--- a/packages/backend/src/api/__tests__/AgentTaskApi.test.ts
+++ b/packages/backend/src/api/__tests__/AgentTaskApi.test.ts
@@ -13,7 +13,8 @@ describe('AgentTaskAPI', () => {
   const mockAgentTaskResponse = {
     object: 'agent_task',
     agent_id: 'agent_123',
-    task_id: 'task_456',
+    task_id: 'agent_task_456',
+    agent_task_id: 'agent_task_456',
     url: 'https://example.com/agent-task',
   };
 
@@ -51,9 +52,9 @@ describe('AgentTaskAPI', () => {
         redirectUrl: 'https://example.com/callback',
         sessionMaxDurationInSeconds: 1800,
       });
-
       expect(response.agentId).toBe('agent_123');
-      expect(response.taskId).toBe('task_456');
+      expect(response.taskId).toBe('agent_task_456');
+      expect(response.agentTaskId).toBe('agent_task_456');
       expect(response.url).toBe('https://example.com/agent-task');
     });
 
@@ -90,7 +91,8 @@ describe('AgentTaskAPI', () => {
       });
 
       expect(response.agentId).toBe('agent_123');
-      expect(response.taskId).toBe('task_456');
+      expect(response.taskId).toBe('agent_task_456');
+      expect(response.agentTaskId).toBe('agent_task_456');
     });
   });
 });
diff --git a/packages/backend/src/api/resources/AgentTask.ts b/packages/backend/src/api/resources/AgentTask.ts
index e5e821320f6..5053f0a828b 100644
--- a/packages/backend/src/api/resources/AgentTask.ts
+++ b/packages/backend/src/api/resources/AgentTask.ts
@@ -14,8 +14,13 @@ export class AgentTask {
     readonly agentId: string,
     /**
      * A unique identifier for this agent task.
+     * @deprecated Use agentTaskId instead.
      */
     readonly taskId: string,
+    /**
+     * A unique identifier for this agent task.
+     */
+    readonly agentTaskId: string,
     /**
      * The FAPI URL that, when visited, creates a session for the user.
      */
@@ -29,6 +34,7 @@ export class AgentTask {
    * @returns A new AgentTask instance
    */
   static fromJSON(data: AgentTaskJSON): AgentTask {
-    return new AgentTask(data.agent_id, data.task_id, data.url);
+    const agentTaskId = data.agent_task_id ?? data.task_id ?? '';
+    return new AgentTask(data.agent_id, agentTaskId, agentTaskId, data.url);
   }
 }
diff --git a/packages/backend/src/api/resources/JSON.ts b/packages/backend/src/api/resources/JSON.ts
index 2da34e59185..1029596bdc0 100644
--- a/packages/backend/src/api/resources/JSON.ts
+++ b/packages/backend/src/api/resources/JSON.ts
@@ -516,6 +516,10 @@ export interface SignInTokenJSON extends ClerkResourceJSON {
 export interface AgentTaskJSON extends ClerkResourceJSON {
   object: typeof ObjectType.AgentTask;
   agent_id: string;
+  agent_task_id: string;
+  /**
+   * @deprecated Use `agent_task_id` instead.
+   */
   task_id: string;
   url: string;
 }