diff --git a/services/mcp-server/src/modules/a2a/agents/diagnostics-orchestrator.ts b/services/mcp-server/src/modules/a2a/agents/diagnostics-orchestrator.ts
index fb4f25f9..03659519 100644
--- a/services/mcp-server/src/modules/a2a/agents/diagnostics-orchestrator.ts
+++ b/services/mcp-server/src/modules/a2a/agents/diagnostics-orchestrator.ts
@@ -4,18 +4,9 @@
  */
 
 import { randomUUID } from 'node:crypto';
-import { diagnosticsCreateSession } from '../../../lib/platform-client.js';
+import { diagnosticsCreateSession, type DebugSession } from '../../../lib/platform-client.js';
 import type { DispatchDecision, TelemetryFindings, DiagnosticsSessionResult } from '../types.js';
 
-interface CreatedSession {
-  id: string;
-  status: string;
-  expiresAt: string;
-  collectionLevel?: string;
-  targetUserId?: string;
-  targetAnonymousId?: string;
-}
-
 export async function orchestrate(
   decision: DispatchDecision,
   findings: TelemetryFindings,
@@ -43,7 +34,7 @@ export async function orchestrate(
   const collectionLevel = hasFatal ? 'trace' : 'debug';
 
   try {
-    const session = (await diagnosticsCreateSession(
+    const session: DebugSession = await diagnosticsCreateSession(
       {
         productId: brief.productId,
         targetUserId: brief.userReport.userId,
@@ -54,7 +45,7 @@ export async function orchestrate(
         maxDurationMinutes: 30,
       },
       { token: opts.token, requestId: findings.runContext.requestId, productId: brief.productId }
-    )) as CreatedSession;
+    );
 
     return {
       runContext: ctx,