Fixing Claude Opus 5.5 long-context drift with an external SESSION_STATE.md protocol
socialwithaayan · x · 2026-09-28
- Running Claude Opus 5.5 freely across a 200k context window breaks down on complex features: context fills up, the model forgets earlier tool outputs, and produces hallucinated file states or circular diffs.
- The fix is an "AX (Agent Experience)" state protocol: have the model maintain an external SESSIONSTATE.md file before touching any code.
- The author shared a ready-to-paste prompt template for CLAUDE.md or system instructions; a commenter praised the raw terminal output proof.
Related event: Claude Opus 5.5 Loses Track in Long Contexts; SESSION_STATE.md Offers a Fix(2 posts)→
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