fix(proxy): serialize team budget_limits to JSON in jsonify_team_object

litellm/proxy/utils.py

@@ -3792,6 +3792,10 @@ def jsonify_team_object(self, db_data: dict):
             db_data["members_with_roles"], list
         ):
             db_data["members_with_roles"] = json.dumps(db_data["members_with_roles"])
+        if db_data.get("budget_limits", None) is not None and isinstance(
+            db_data["budget_limits"], list
+        ):
+            db_data["budget_limits"] = json.dumps(db_data["budget_limits"])
         return db_data
 
     # Define a retrying strategy with exponential backoff

tests/test_litellm/proxy/utils/prisma_and_spend/test_prisma_client_get_data.py

@@ -105,6 +105,33 @@ def test_jsonify_team_object_converts_members_to_json_string(
     }
 
 
+def test_jsonify_team_object_converts_budget_limits_to_json_string(
+    prisma_client: PrismaClient,
+) -> None:
+    data = {
+        "team_id": "t1",
+        "budget_limits": [
+            {
+                "budget_duration": "1d",
+                "max_budget": 10.0,
+                "reset_at": "2026-01-01T00:00:00Z",
+            },
+            {
+                "budget_duration": "7d",
+                "max_budget": 50.0,
+                "reset_at": "2026-01-07T00:00:00Z",
+            },
+        ],
+        "models": ["gpt-4"],
+    }
+    result = prisma_client.jsonify_team_object(data)
+    assert result == {
+        "team_id": "t1",
+        "budget_limits": json.dumps(data["budget_limits"]),
+        "models": ["gpt-4"],
+    }
+
+
 def test_jsonify_team_object_error_on_non_dict(prisma_client: PrismaClient) -> None:
     with pytest.raises(AttributeError):
         prisma_client.jsonify_team_object(None)  # type: ignore[arg-type]