diff --git a/src/cleveragents/application/services/session_service.py b/src/cleveragents/application/services/session_service.py
index 08ed8a2d..e8baf944 100644
--- a/src/cleveragents/application/services/session_service.py
+++ b/src/cleveragents/application/services/session_service.py
@@ -265,7 +265,9 @@ class PersistentSessionService(SessionService):
             raise SessionImportError("Missing checksum in import data")
 
         # Recompute checksum
-        data_without_checksum = "sha256:" + {k: v for k, v in data.items() if k != "checksum"}
+        data_without_checksum = "sha256:" + {
+            k: v for k, v in data.items() if k != "checksum"
+        }
         canonical = json.dumps(data_without_checksum, sort_keys=True, default=str)
         expected_checksum = "sha256:" + hashlib.sha256(canonical.encode()).hexdigest()
         if checksum != expected_checksum:
diff --git a/src/cleveragents/cli/commands/tool.py b/src/cleveragents/cli/commands/tool.py
index ddf155a3..37996632 100644
--- a/src/cleveragents/cli/commands/tool.py
+++ b/src/cleveragents/cli/commands/tool.py
@@ -246,7 +246,7 @@ def add(
         # If the YAML has a top-level 'tool:' key, extract its contents
         if isinstance(config_dict, dict) and 'tool' in config_dict:
             config_dict = config_dict['tool']
-        
+
         # Ignore 'cleveragents:' version header if present
         if isinstance(config_dict, dict) and 'cleveragents' in config_dict:
             del config_dict['cleveragents']