After Agent Context Compaction: How to Ensure State and Constraints Survive?
Middle_Wing5512 · reddit · 2026-08-09
In long-running coding agent workflows, context compaction or process restarts often lead to the loss of task constraints and verification states. The author tested a trending open-source project designed to tackle this by externalizing objectives, todos, evidence, and quotas out of the chat transcript into a durable control plane.
While basic tests passed, stricter smoke tests revealed flaws in the recovery logic. This led the author to propose a stricter acceptance criteria for agent recovery:
- Can the agent recover the exact next bounded delivery after a restart?
- Does it retain the user's acceptance criteria and authority boundaries?
- Does the turn close with actual code, tests, or runtime evidence rather than just process artifacts?
External state can reduce the cost of rebuilding context, but it cannot fix the provider's context cap and might introduce its own form of schema drift if every recovery adds more overhead than actual delivery.
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