MCP Multi-Tool Server

Instructions

Calculate the square root of a number.

Args:
    number: The number to find the square root of

Returns:
    The square root of the number

Raises:
    ValueError: If number is negative

Implementation Reference

• server.py:106-122 (handler)

  The handler function for the 'square_root' tool. It calculates the square root of a given number using math.sqrt, with error handling for negative inputs. The @mcp.tool() decorator registers it as an MCP tool, and the docstring provides the schema via Args/Returns/Raises.

  @mcp.tool()
  def square_root(number: float) -> float:
      """
      Calculate the square root of a number.
      
      Args:
          number: The number to find the square root of
      
      Returns:
          The square root of the number
      
      Raises:
          ValueError: If number is negative
      """
      if number < 0:
          raise ValueError("Cannot calculate square root of negative number")
      return math.sqrt(number)