diff --git a/src/agents/pi-embedded-runner.buildembeddedsandboxinfo.test.ts b/src/agents/pi-embedded-runner.buildembeddedsandboxinfo.test.ts
index 5cc37fc03..b3ba159c0 100644
--- a/src/agents/pi-embedded-runner.buildembeddedsandboxinfo.test.ts
+++ b/src/agents/pi-embedded-runner.buildembeddedsandboxinfo.test.ts
@@ -135,7 +135,7 @@ describe("buildEmbeddedSandboxInfo", () => {
 
     expect(buildEmbeddedSandboxInfo(sandbox)).toEqual({
       enabled: true,
-      workspaceDir: "/tmp/moltbot-sandbox",
+      workspaceDir: "/workspace",
       workspaceAccess: "none",
       agentWorkspaceMount: undefined,
       browserBridgeUrl: "http://localhost:9222",
@@ -178,7 +178,7 @@ describe("buildEmbeddedSandboxInfo", () => {
       }),
     ).toEqual({
       enabled: true,
-      workspaceDir: "/tmp/moltbot-sandbox",
+      workspaceDir: "/workspace",
       workspaceAccess: "none",
       agentWorkspaceMount: undefined,
       hostBrowserAllowed: false,
diff --git a/src/agents/pi-embedded-runner/sandbox-info.ts b/src/agents/pi-embedded-runner/sandbox-info.ts
index a72797c9c..41a1c42ea 100644
--- a/src/agents/pi-embedded-runner/sandbox-info.ts
+++ b/src/agents/pi-embedded-runner/sandbox-info.ts
@@ -10,7 +10,7 @@ export function buildEmbeddedSandboxInfo(
   const elevatedAllowed = Boolean(execElevated?.enabled && execElevated.allowed);
   return {
     enabled: true,
-    workspaceDir: sandbox.workspaceDir,
+    workspaceDir: sandbox.containerWorkdir,
     workspaceAccess: sandbox.workspaceAccess,
     agentWorkspaceMount: sandbox.workspaceAccess === "ro" ? "/agent" : undefined,
     browserBridgeUrl: sandbox.browser?.bridgeUrl,