Format

Author: Nikita Bellini

src/mcp/server/fastmcp/server.py

@@ -253,7 +253,9 @@ async def list_tools(self) -> list[MCPTool]:
 
         # Check if there are no duplicated tools
         if len(tools) != len(set([tool.name for tool in tools])):
-            raise Exception("There are duplicated tools. Check the for tools with the same name both static and generated at runtime.")
+            raise Exception(
+                "There are duplicated tools. Check the for tools with the same name both static and generated at runtime."
+            )
 
         return [
             MCPTool(

tests/server/fastmcp/test_runtime_tools.py

@@ -7,21 +7,21 @@
 from mcp.server.fastmcp.tools.base import Tool
 from mcp.types import TextContent
 
+
 @pytest.mark.anyio
 async def test_runtime_tools():
     """Test that runtime tools work correctly."""
+
     async def runtime_mcp_tools_generator() -> list[Tool]:
         """Generate runtime tools."""
+
         def runtime_tool_1(message: str):
             return message
-        
+
         def runtime_tool_2(message: str):
             return message
 
-        return [
-            Tool.from_function(runtime_tool_1),
-            Tool.from_function(runtime_tool_2)
-        ]
+        return [Tool.from_function(runtime_tool_1), Tool.from_function(runtime_tool_2)]
 
     # Create server with various tool configurations, both static and runtime
     mcp = FastMCP(name="RuntimeToolsTestServer", runtime_mcp_tools_generator=runtime_mcp_tools_generator)
@@ -70,4 +70,4 @@ def static_tool(message: str) -> str:
         assert len(result.content) == 1
         content = result.content[0]
         assert isinstance(content, TextContent)
-        assert content.text == "Unknown tool: non_existing_tool"
+        assert content.text == "Unknown tool: non_existing_tool"