fastmcp: allow passing Tool directly to FastMCP constructor (#699)

src/mcp/server/fastmcp/tools/tool_manager.py

@@ -19,8 +19,19 @@ logger = get_logger(__name__)
 class ToolManager:
     """Manages FastMCP tools."""
 
-    def __init__(self, warn_on_duplicate_tools: bool = True):
+    def __init__(
+        self,
+        warn_on_duplicate_tools: bool = True,
+        *,
+        tools: list[Tool] | None = None,
+    ):
         self._tools: dict[str, Tool] = {}
+        if tools is not None:
+            for tool in tools:
+                if warn_on_duplicate_tools and tool.name in self._tools:
+                    logger.warning(f"Tool already exists: {tool.name}")
+                self._tools[tool.name] = tool
+
         self.warn_on_duplicate_tools = warn_on_duplicate_tools
 
     def get_tool(self, name: str) -> Tool | None: