Codex launches Astra: notes that persist across context windows
gabrielchua · x · 2026-09-05
OpenAI's Codex is introducing Astra, a new way to preserve and retrieve context when the context window fills up.
- Instead of repeatedly compressing accumulated details into a single summary, Astra keeps notes across context windows
- The agent can retrieve these notes later, preserving long-task context
- The author shared setup instructions — you can even screenshot them and ask Codex to enable it itself
A practical productization of memory management for long-running agents.
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