feat: add confirmation details support + jsonrpc vs http rest support (#16079)

packages/core/src/agents/remote-invocation.ts

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+import type { ToolConfirmationOutcome } from '../tools/tools.js';
 import {
   BaseToolInvocation,
   type ToolResult,
@@ -114,8 +115,10 @@ export class RemoteAgentInvocation extends BaseToolInvocation<
     return {
       type: 'info',
       title: `Call Remote Agent: ${this.definition.displayName ?? this.definition.name}`,
-      prompt: `This will send a message to the external agent at ${this.definition.agentCardUrl}.`,
-      onConfirm: async () => {}, // No-op for now, just informational
+      prompt: `Calling remote agent: "${this.params.query}"`,
+      onConfirm: async (outcome: ToolConfirmationOutcome) => {
+        await this.publishPolicyUpdate(outcome);
+      },
     };
   }