feat: replace hardcoded 80% usable context ratio with autocompact formula#319
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Koriit wants to merge 1 commit intosirmalloc:mainfrom
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feat: replace hardcoded 80% usable context ratio with autocompact formula#319Koriit wants to merge 1 commit intosirmalloc:mainfrom
Koriit wants to merge 1 commit intosirmalloc:mainfrom
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…mula Replace the flat 0.8 ratio used to estimate usable context tokens with Claude Code's actual autocompact threshold formula: effectiveWindow = contextWindow - 20,000 (reserved for summary output) threshold = effectiveWindow - 13,000 (buffer) This changes usable tokens from 160k to 167k (for 200k windows) and from 800k to 967k (for 1M windows), matching what Claude Code actually triggers autocompact at. Add support for CLAUDE_AUTOCOMPACT_PCT_OVERRIDE which allows users to lower the threshold via a percentage of the effective window. The value is resolved from the shell environment first, then Claude Code's settings.json env block, with invalid values silently ignored. - New src/utils/autocompact.ts resolver with env > settings.json cascade - computeUsableTokens() with Math.max(1, ...) floor guard for small windows - Updated CLAUDE.md documentation Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
effectiveWindow - bufferTokensCLAUDE_AUTOCOMPACT_PCT_OVERRIDEresolved from shell env → Claude Codesettings.jsonenv block → nullTest plan
bun test)bun run lint)CLAUDE_AUTOCOMPACT_PCT_OVERRIDEset in environmentCLAUDE_AUTOCOMPACT_PCT_OVERRIDEset in~/.claude/settings.jsonenv block🤖 Generated with Claude Code