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Claude Code and Cursor developers face 'compaction amnesia' issue

Developers using Claude Code and Cursor are encountering an issue termed "compaction amnesia," where the AI model loses precision on critical instructions due to context window management. This occurs because Claude Code re-evaluates rules files after compacting context, treating all rules with equal importance, thus diluting essential constraints. The solution involves structuring rules files into three distinct sections: hard constraints, project conventions, and an escalation rule for uncertainty, ensuring that the most vital instructions are prioritized. AI

IMPACT Provides a structural solution for developers to improve the reliability of AI coding assistants by optimizing rule file management.

RANK_REASON This is a technical guide for developers using specific AI tools, offering a solution to a problem encountered within those tools.

Read on dev.to — Claude Code tag →

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  1. dev.to — Claude Code tag TIER_1 English(EN) · Olivia Craft ·

    How to Fix Cursor Compaction Amnesia (and Why Your Rules Stop Working)

    <p>Developers building with Claude Code and Cursor are hitting a wall that doesn't have a name yet. I'll call it <strong>compaction amnesia</strong>.</p> <p>When Claude Code compacts your context — which it does automatically to manage token limits — it re-reads your rules file w…