Simple HTTP MCP Server

Instructions

Implementation Reference

• tests/app/tools.py:25-30 (handler)

  The main handler function that implements the logic for the 'get_weather' tool, which simulates returning weather data for a given location and unit.

  async def get_weather(args: Arguments[GetWeatherInput]) -> GetWeatherOutput:
      """Get the current weather in a given location."""
      args.get_state_key("context", Context).add_called_tool("get_weather")
      return GetWeatherOutput(
          weather=f"The weather in {args.inputs.location} is 25 degrees {args.inputs.unit}",
      )

• tests/app/tools.py:12-14 (schema)

  Pydantic input schema for the 'get_weather' tool defining location and unit parameters.

  class GetWeatherInput(BaseModel):
      location: str = Field(description="The location to get the weather for")
      unit: str = Field(description="The unit of temperature", default="celsius")

• tests/app/tools.py:17-19 (schema)

  Pydantic output schema for the 'get_weather' tool defining the weather response.

  class GetWeatherOutput(BaseModel):
      weather: str = Field(description="The weather in the given location")

• tests/app/tools.py:98-102 (registration)

  Registration of the 'get_weather' tool in the TOOLS tuple using the Tool constructor with handler, input schema, and output schema.

      func=get_weather,
      inputs=GetWeatherInput,
      output=GetWeatherOutput,
  ),
  Tool(