OpenAI's lightweight SDK for building agents with handoffs, guardrails, and tracing.
The OpenAI Agents SDK is a minimal, production-oriented framework for building agentic apps. It provides primitives for agents, tool calls, handoffs between specialized agents, input/output guardrails, and built-in tracing. It succeeds the experimental Swarm project and integrates natively with OpenAI's Responses API while remaining model-agnostic.
Open-source SDK is free; you pay only for the underlying model API usage.