AI Agent SDK

The AI Agent SDK is a developer toolkit for building autonomous, production-ready AI systems that reason, use external tools, and orchestrate multi-step workflows.

This SDK provides the core primitives—Agents, Tools, Handoffs, and Guardrails—necessary to deploy complex, reliable agentic applications. Agents, powered by LLMs like GPT-5, autonomously break down user goals and execute tasks by calling external tools: think web search, file modification, or custom Python functions. The framework simplifies orchestration, allowing seamless delegation (Handoffs) between specialized agents, such as a 'Research Agent' passing data to a 'Code Generation Agent.' This structure dramatically reduces the complexity of building multi-step systems, enabling developers to ship sophisticated products like bug-fixing assistants or advanced data analysis tools with less effort.

https://platform.openai.com/docs/agents