diff --git a/api/agent-notes/core/virtual_environment/providers/e2b_sandbox.py.md b/api/agent-notes/core/virtual_environment/providers/e2b_sandbox.py.md
index 763334a89e..3fc5e83859 100644
--- a/api/agent-notes/core/virtual_environment/providers/e2b_sandbox.py.md
+++ b/api/agent-notes/core/virtual_environment/providers/e2b_sandbox.py.md
@@ -5,7 +5,7 @@
 
 ## Key Decisions
 - Sandbox metadata is gathered during `_construct_environment` using the E2B SDK before returning `Metadata`.
-- Architecture/OS detection uses a single `uname -m -s` call split into two lines to reduce round-trips.
+- Architecture/OS detection uses a single `uname -m -s` call split by whitespace to reduce round-trips.
 - Command execution streams stdout/stderr through `QueueTransportReadCloser`; stdin is unsupported.
 
 ## Edge Cases
diff --git a/api/core/virtual_environment/providers/e2b_sandbox.py b/api/core/virtual_environment/providers/e2b_sandbox.py
index b5f1bb46a5..118980d596 100644
--- a/api/core/virtual_environment/providers/e2b_sandbox.py
+++ b/api/core/virtual_environment/providers/e2b_sandbox.py
@@ -132,12 +132,18 @@ class E2BEnvironment(VirtualEnvironment):
             envs=dict(environments),
         )
         info = sandbox.get_info(api_key=options.get(self.OptionsKey.API_KEY, ""))
-        system_info = sandbox.commands.run("uname -m -s").stdout.splitlines()
+        system_info = sandbox.commands.run("uname -m -s").stdout.strip()
+        system_parts = system_info.split()
+        if len(system_parts) == 2:
+            os_part, arch_part = system_parts
+        else:
+            arch_part = system_parts[0]
+            os_part = system_parts[1] if len(system_parts) > 1 else ""
 
         return Metadata(
             id=info.sandbox_id,
-            arch=self._convert_architecture(system_info[0].strip()),
-            os=self._convert_operating_system(system_info[1].strip()),
+            arch=self._convert_architecture(arch_part.strip()),
+            os=self._convert_operating_system(os_part.strip()),
             store={
                 self.StoreKey.SANDBOX: sandbox,
             },