From db1d0620f2bda1af889f539cbd91359a9f778869 Mon Sep 17 00:00:00 2001
From: hailin <hailin.zhao@gdzx.xyz>
Date: Mon, 23 Feb 2026 06:34:42 -0800
Subject: [PATCH] debug: add stderr callback to SDK engine for error visibility

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 .../engines/claude-agent-sdk/claude-agent-sdk-engine.ts        | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/services/agent-service/src/infrastructure/engines/claude-agent-sdk/claude-agent-sdk-engine.ts b/packages/services/agent-service/src/infrastructure/engines/claude-agent-sdk/claude-agent-sdk-engine.ts
index 95742a5..5326539 100644
--- a/packages/services/agent-service/src/infrastructure/engines/claude-agent-sdk/claude-agent-sdk-engine.ts
+++ b/packages/services/agent-service/src/infrastructure/engines/claude-agent-sdk/claude-agent-sdk-engine.ts
@@ -109,6 +109,9 @@ export class ClaudeAgentSdkEngine implements AgentEnginePort {
           abortController,
           allowDangerouslySkipPermissions: true,
           permissionMode: 'bypassPermissions',
+          stderr: (data: string) => {
+            this.logger.debug(`SDK stderr (${params.sessionId}): ${data.trim()}`);
+          },
           canUseTool: async (toolName, toolInput, { signal }) => {
             const riskLevel = this.classifyToolRisk(toolName, toolInput);