MCP Server Example

Instructions

Implementation Reference

• server.py:20-23 (handler)

  The 'add' tool handler function. It's registered as an MCP tool via the @mcp.tool() decorator and implements the logic to add two float numbers and return the result.

  @mcp.tool()
  def add(a: float, b: float) -> float:
      """Add two numbers."""
      return a + b

• server.py:20-20 (registration)

  The @mcp.tool() decorator registers the 'add' function as an MCP tool, making it available for Claude to invoke.

  @mcp.tool()

• server.py:21-23 (schema)

  The schema is defined via Python type hints: accepts two float parameters (a, b) and returns a float. The docstring provides the tool description.

  def add(a: float, b: float) -> float:
      """Add two numbers."""
      return a + b