OpenAI opens its Codex agent infrastructure to developers
OpenAI introduced the Agents API in public beta, giving developers access to its managed Codex harness for long-running cloud agents. It supports tools, context management and subagents, with a choice of OpenAI-hosted or other supported environments. The announcement describes infrastructure for building workflows, not a guarantee that an agent will complete every task correctly.
Context & source check
For builders, managed agent infrastructure could reduce orchestration work. Keep permissions narrow, define a verifiable deliverable and compare total operating costs before moving a recurring workflow into production.
Public beta announcement. Company source. Source checked Sep 12, 2026. Not independently tested.


