diff --git a/studio/backend/core/inference/mcp_config_import.py b/studio/backend/core/inference/mcp_config_import.py
index c53bf8836d..7f1e43fc82 100644
--- a/studio/backend/core/inference/mcp_config_import.py
+++ b/studio/backend/core/inference/mcp_config_import.py
@@ -32,7 +32,9 @@ def _coerce_str_dict(value: dict) -> dict[str, str]:
     return {str(k): str(v) for k, v in value.items()}
 
 
-def _parse_entry(name: str, spec: object) -> tuple[Optional[ParsedMcpEntry], Optional[str]]:
+def _parse_entry(
+    name: str, spec: object
+) -> tuple[Optional[ParsedMcpEntry], Optional[str]]:
     label = str(name).strip()
     if not label:
         return None, "Server entry has an empty name."
diff --git a/studio/backend/models/mcp_servers.py b/studio/backend/models/mcp_servers.py
index 606c2423bf..cf062efda7 100644
--- a/studio/backend/models/mcp_servers.py
+++ b/studio/backend/models/mcp_servers.py
@@ -53,5 +53,7 @@ class McpServerImportRequest(BaseModel):
 
 class McpServerImportResult(BaseModel):
     created: list[McpServerResponse] = Field(default_factory = list)
-    skipped: list[str] = Field(default_factory = list)  # display names skipped as duplicates
+    skipped: list[str] = Field(
+        default_factory = list
+    )  # display names skipped as duplicates
     errors: list[str] = Field(default_factory = list)
diff --git a/studio/backend/tests/test_mcp_config_import.py b/studio/backend/tests/test_mcp_config_import.py
index 693cec1281..2f19376128 100644
--- a/studio/backend/tests/test_mcp_config_import.py
+++ b/studio/backend/tests/test_mcp_config_import.py
@@ -127,7 +127,9 @@ def test_servers_alias_key():
 
 
 def test_env_and_args_values_coerced_to_str():
-    cfg = {"mcpServers": {"fs": {"command": "node", "args": [8080], "env": {"PORT": 8080}}}}
+    cfg = {
+        "mcpServers": {"fs": {"command": "node", "args": [8080], "env": {"PORT": 8080}}}
+    }
     entries, errors = parse_mcp_config(cfg)
     assert errors == []
     assert entries[0].headers == {"PORT": "8080"}