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快速开始

创建项目与虚拟环境

你只需执行一次。

mkdirmy_projectcdmy_projectpython-mvenv.venv

激活虚拟环境

每次开启新的终端会话都需要执行。

source.venv/bin/activate

安装 Agents SDK

pipinstallopenai-agents# or `uv add openai-agents`, etc

设置 OpenAI API 密钥

如果你还没有,请按照这些说明创建一个 OpenAI API 密钥。

exportOPENAI_API_KEY=sk-...

创建第一个智能体

智能体由 instructions、名称以及可选配置(例如model_config)定义。

fromagentsimportAgentagent=Agent(name="Math Tutor",instructions="You provide help with math problems. Explain your reasoning at each step and include examples",)

添加更多智能体

可以用同样方式定义其他智能体。handoff_descriptions 提供用于确定任务转移路由的额外上下文。

fromagentsimportAgenthistory_tutor_agent=Agent(name="History Tutor",handoff_description="Specialist agent for historical questions",instructions="You provide assistance with historical queries. Explain important events and context clearly.",)math_tutor_agent=Agent(name="Math Tutor",handoff_description="Specialist agent for math questions",instructions="You provide help with math problems. Explain your reasoning at each step and include examples",)

任务转移定义

在每个智能体上,你可以定义一个外发的任务转移选项清单,智能体可从中选择以决定如何推进其任务。

triage_agent=Agent(name="Triage Agent",instructions="You determine which agent to use based on the user's homework question",handoffs=[history_tutor_agent,math_tutor_agent])

运行智能体编排

让我们检查工作流是否运行,并且分诊智能体是否能在两个专家智能体之间正确路由。

fromagentsimportRunnerasyncdefmain():result=awaitRunner.run(triage_agent,"What is the capital of France?")print(result.final_output)

安全防护措施添加

你可以定义自定义的安全防护措施,用于对输入或输出进行处理。

fromagentsimportGuardrailFunctionOutput,Agent,RunnerfrompydanticimportBaseModelclassHomeworkOutput(BaseModel):is_homework:boolreasoning:strguardrail_agent=Agent(name="Guardrail check",instructions="Check if the user is asking about homework.",output_type=HomeworkOutput,)asyncdefhomework_guardrail(ctx,agent,input_data):result=awaitRunner.run(guardrail_agent,input_data,context=ctx.context)final_output=result.final_output_as(HomeworkOutput)returnGuardrailFunctionOutput(output_info=final_output,tripwire_triggered=notfinal_output.is_homework,)

整合与运行

让我们把以上内容整合起来,使用任务转移和输入安全防护措施运行整个工作流。

fromagentsimportAgent,InputGuardrail,GuardrailFunctionOutput,Runnerfromagents.exceptionsimportInputGuardrailTripwireTriggeredfrompydanticimportBaseModelimportasyncioclassHomeworkOutput(BaseModel):is_homework:boolreasoning:strguardrail_agent=Agent(name="Guardrail check",instructions="Check if the user is asking about homework.",output_type=HomeworkOutput,)math_tutor_agent=Agent(name="Math Tutor",handoff_description="Specialist agent for math questions",instructions="You provide help with math problems. Explain your reasoning at each step and include examples",)history_tutor_agent=Agent(name="History Tutor",handoff_description="Specialist agent for historical questions",instructions="You provide assistance with historical queries. Explain important events and context clearly.",)asyncdefhomework_guardrail(ctx,agent,input_data):result=awaitRunner.run(guardrail_agent,input_data,context=ctx.context)final_output=result.final_output_as(HomeworkOutput)returnGuardrailFunctionOutput(output_info=final_output,tripwire_triggered=notfinal_output.is_homework,)triage_agent=Agent(name="Triage Agent",instructions="You determine which agent to use based on the user's homework question",handoffs=[history_tutor_agent,math_tutor_agent],input_guardrails=[InputGuardrail(guardrail_function=homework_guardrail),],)asyncdefmain():# Example 1: History questiontry:result=awaitRunner.run(triage_agent,"who was the first president of the united states?")print(result.final_output)exceptInputGuardrailTripwireTriggeredase:print("Guardrail blocked this input:",e)# Example 2: General/philosophical questiontry:result=awaitRunner.run(triage_agent,"What is the meaning of life?")print(result.final_output)exceptInputGuardrailTripwireTriggeredase:print("Guardrail blocked this input:",e)if__name__=="__main__":asyncio.run(main())

查看追踪

要回顾智能体运行期间发生的事情,请前往OpenAI 控制台中的 Trace 查看器查看你的运行追踪。

后续步骤

了解如何构建更复杂的智能体流程:


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