Open AI Agent SDK

Open AI Agent SDK (Software Development Kit) is a lightweight, production-ready framework for building multi-agent workflows that combines large language models with tool execution capabilities and agent coordination. This provider-agnostic platform supports OpenAI APIs alongside 100+ other LLMs, enabling developers to create agentic AI applications using core primitives including agents, tools, handoffs, and guardrails. The SDK facilitates complex multi-step workflows through function calling, hosted tools for web search and computer use, and agent-to-agent communication without requiring extensive abstractions. Key features include human-in-the-loop approvals, state serialization, and support for both simple conversational agents and sophisticated multi-agent systems. Built with Python and offering JavaScript/TypeScript versions, the SDK serves as a production upgrade from OpenAI’s experimental Swarm framework, providing enterprise-grade reliability for autonomous AI system development.