diff --git a/container/agent-runner/src/ipc-mcp-stdio.ts b/container/agent-runner/src/ipc-mcp-stdio.ts
index d1ffe3c..3af73aa 100644
--- a/container/agent-runner/src/ipc-mcp-stdio.ts
+++ b/container/agent-runner/src/ipc-mcp-stdio.ts
@@ -11,7 +11,7 @@ import fs from 'fs';
 import path from 'path';
 import { CronExpressionParser } from 'cron-parser';
 
-const IPC_DIR = '/workspace/ipc';
+const IPC_DIR = process.env.NANOCLAW_IPC_DIR || '/workspace/ipc';
 const MESSAGES_DIR = path.join(IPC_DIR, 'messages');
 const TASKS_DIR = path.join(IPC_DIR, 'tasks');