Merge branch 'main' into mount

src/fastmcp/client/transports.py

@@ -2,6 +2,7 @@ import abc
 import contextlib
 import datetime
 import os
+import shutil
 from collections.abc import AsyncIterator
 from pathlib import Path
 from typing import (
@@ -343,6 +344,10 @@ class NpxStdioTransport(StdioTransport):
             env_vars: Additional environment variables
             use_package_lock: Whether to use package-lock.json (--prefer-offline)
         """
+        # verify npx is installed
+        if shutil.which("npx") is None:
+            raise ValueError("Command 'npx' not found")
+
         # Basic validation
         if project_directory and not Path(project_directory).exists():
             raise NotADirectoryError(

src/fastmcp/settings.py

@@ -42,7 +42,7 @@ class ServerSettings(BaseSettings):
     log_level: LOG_LEVEL = Field(default_factory=lambda: Settings().log_level)
 
     # HTTP settings
-    host: str = "0.0.0.0"
+    host: str = "127.0.0.1"
     port: int = 8000
     sse_path: str = "/sse"
     message_path: str = "/messages/"