苏米的课

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2026-03-04

Agent SDK 核心概念 ​

Message 消息结构 ​

python
message = {
    "role": "user" | "assistant",
    "content": "消息内容"
}

Tool 调用流程 ​

python
# 1. 定义工具
tools = [
    {
        "name": "get_weather",
        "description": "获取天气信息",
        "input_schema": {
            "type": "object",
            "properties": {
                "city": {"type": "string"}
            },
            "required": ["city"]
        }
    }
]
# 2. Claude 决定调用工具
# 3. 执行工具并返回结果
# 4. Claude 继续处理

流式响应 ​

python
with client.messages.stream(...) as stream:
    for event in stream:
        if event.type == "content_block_delta":
            print(event.delta.text, end="")

下一节: 实战项目

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