OpenAI Agents API

The OpenAI Agents API provides applications access to the Codex harness, enabling agents to use tools like programmatic_tool_calling, MCP, and web_search. Agents can be configured with models such as "gpt-6-astra" and instructions for answering technical questions, delegating tasks to subagents. The API supports multi-agent capabilities with a maximum of 4 concurrent subagents and retains session state for continuous work. It currently offers data residency only in the United States and does not support Zero Data Retention (ZDR), even with a self-hosted sandbox.