content: """Test that parameter descriptions are properly exposed through list_tools"""
  
  import pytest
  from pydantic import Field
  
  from mcp.server.fastmcp import FastMCP
  
  
  @pytest.mark.anyio
  async def test_parameter_descriptions():
      mcp = FastMCP("Test Server")
  
      @mcp.tool()
      def greet(
          name: str = Field(description="The name to greet"),
          title: str = Field(description="Optional title", default=""),
      ) -> str:  # pragma: no cover
          """A greeting tool"""
          return f"Hello {title} {name}"
  
      tools = await mcp.list_tools()
      assert len(tools) == 1
      tool = tools[0]
  
      # Check that parameter descriptions are present in the schema
      properties = tool.inputSchema["properties"]
      assert "name" in properties
      assert properties["name"]["description"] == "The name to greet"
      assert "title" in properties
      assert properties["title"]["description"] == "Optional title"
  