
CONFIRMEDAGENTS
Agents API is a platform page, not a rumor
Confirmed on developers.openai.com: managed sessions, environments, a Codex harness, MCP, and subagents. Example code names gpt-6-astra. A tools breakthrough for long-running work.
11 Sep 2026 · developers.openai.com
- OpenAI published Agents API documentation describing durable cloud agents built on a managed Codex harness.
- The page says OpenAI manages sessions, orchestration, context compaction, and recovery while the application provides tools and chooses an execution environment.
Why it mattersDevelopers can build long-running agents with managed sessions, sandboxes, and MCP. That is a primary platform shift for how software work gets done.
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