diff --git a/memos/cmds/library.py b/memos/cmds/library.py
index 628ae96..41404ba 100644
--- a/memos/cmds/library.py
+++ b/memos/cmds/library.py
@@ -1086,7 +1086,7 @@ def watch(
         None, "--folder", "-f", help="Specify folders to watch"
     ),
     sparsity_factor: float = typer.Option(
-        2.0, "--sparsity-factor", "-sf", help="Sparsity factor for file processing"
+        3.0, "--sparsity-factor", "-sf", help="Sparsity factor for file processing"
     ),
     window_size: int = typer.Option(
         20, "--window-size", "-ws", help="Window size for rate calculation"
diff --git a/memos/commands.py b/memos/commands.py
index a37b2a0..f898ec5 100644
--- a/memos/commands.py
+++ b/memos/commands.py
@@ -225,7 +225,7 @@ def watch_default_library(
         20, "--window-size", "-ws", help="Window size for rate calculation"
     ),
     sparsity_factor: float = typer.Option(
-        2.0, "--sparsity-factor", "-sf", help="Sparsity factor for file processing"
+        3.0, "--sparsity-factor", "-sf", help="Sparsity factor for file processing"
     ),
     verbose: bool = typer.Option(
         False, "--verbose", "-v", help="Enable verbose logging"
diff --git a/memos/config.py b/memos/config.py
index 490e045..cf604c8 100644
--- a/memos/config.py
+++ b/memos/config.py
@@ -71,7 +71,7 @@ class Settings(BaseSettings):
     screenshots_dir: str = os.path.join(base_dir, "screenshots")
 
     # Server settings
-    server_host: str = "0.0.0.0"
+    server_host: str = "127.0.0.1"
     server_port: int = 8839
 
     # VLM plugin settings