Function call_tool

tests/interaction/lowlevel/test_sampling.py:51–58

(ctx: ServerRequestContext, params: types.CallToolRequestParams)

        return types.ListToolsResult(tools=[types.Tool(name="ask_model", input_schema={"type": "object"})])

    async def call_tool(ctx: ServerRequestContext, params: types.CallToolRequestParams) -> CallToolResult:
        assert params.name == "ask_model"
        result = await ctx.session.create_message(  # pyright: ignore[reportDeprecated]
            messages=[SamplingMessage(role="user", content=TextContent(text="Say hello."))],
            max_tokens=100,
        )
        assert isinstance(result.content, TextContent)
        return CallToolResult(content=[TextContent(text=f"{result.model}/{result.stop_reason}: {result.content.text}")])

    server = Server("sampler", on_list_tools=list_tools, on_call_tool=call_tool)