addressing comments

litellm/proxy/pass_through_endpoints/pass_through_endpoints.py

@@ -2205,7 +2205,10 @@ def _get_pass_through_endpoints_from_config() -> List[PassThroughGenericEndpoint
     """
     Get pass-through endpoints defined in the config file.
     These are read-only and cannot be edited via the UI.
+    Malformed endpoints are logged and skipped; they do not crash the function.
     """
+    from pydantic import ValidationError
+
     from litellm.proxy.proxy_server import config_passthrough_endpoints
 
     if config_passthrough_endpoints is None or len(config_passthrough_endpoints) == 0:
@@ -2213,15 +2216,22 @@ def _get_pass_through_endpoints_from_config() -> List[PassThroughGenericEndpoint
 
     returned_endpoints: List[PassThroughGenericEndpoint] = []
     for endpoint in config_passthrough_endpoints:
-        if isinstance(endpoint, dict):
-            endpoint_dict = dict(endpoint)
-            endpoint_dict["is_from_config"] = True
-            returned_endpoints.append(PassThroughGenericEndpoint(**endpoint_dict))
-        elif isinstance(endpoint, PassThroughGenericEndpoint):
-            # Create a copy with is_from_config=True
-            endpoint_dict = endpoint.model_dump()
-            endpoint_dict["is_from_config"] = True
-            returned_endpoints.append(PassThroughGenericEndpoint(**endpoint_dict))
+        try:
+            if isinstance(endpoint, dict):
+                endpoint_dict = dict(endpoint)
+                endpoint_dict["is_from_config"] = True
+                returned_endpoints.append(PassThroughGenericEndpoint(**endpoint_dict))
+            elif isinstance(endpoint, PassThroughGenericEndpoint):
+                # Create a copy with is_from_config=True
+                endpoint_dict = endpoint.model_dump()
+                endpoint_dict["is_from_config"] = True
+                returned_endpoints.append(PassThroughGenericEndpoint(**endpoint_dict))
+        except ValidationError as e:
+            verbose_proxy_logger.warning(
+                "Skipping malformed pass-through endpoint from config: %s",
+                e,
+                exc_info=False,
+            )
 
     return returned_endpoints
 

tests/test_litellm/proxy/pass_through_endpoints/test_pass_through_endpoints.py

@@ -1410,6 +1410,39 @@ async def test_get_pass_through_endpoints_includes_config_and_db():
     assert by_path["/v1/rerank"].target == "https://db-override.com/v1/rerank"
 
 
+def test_get_pass_through_endpoints_from_config_skips_malformed():
+    """
+    Test that _get_pass_through_endpoints_from_config skips malformed endpoints
+    and returns only valid ones, without raising.
+    """
+    from litellm.proxy.pass_through_endpoints.pass_through_endpoints import (
+        _get_pass_through_endpoints_from_config,
+    )
+
+    # Mix of valid and malformed config endpoints
+    config_passthrough_endpoints = [
+        {"path": "/valid/1", "target": "https://valid1.example.com"},
+        {},  # Missing required path and target
+        {"path": "/missing-target"},  # Missing required target
+        {"target": "https://example.com"},  # Missing required path
+        {"path": "/valid/2", "target": "https://valid2.example.com", "headers": {}},
+    ]
+
+    with patch(
+        "litellm.proxy.proxy_server.config_passthrough_endpoints",
+        config_passthrough_endpoints,
+    ):
+        result = _get_pass_through_endpoints_from_config()
+
+    # Only the 2 valid endpoints should be returned
+    assert len(result) == 2
+    paths = {ep.path for ep in result}
+    assert "/valid/1" in paths
+    assert "/valid/2" in paths
+    for ep in result:
+        assert ep.is_from_config is True
+
+
 @pytest.mark.asyncio
 async def test_delete_pass_through_endpoint_empty_list():
     """