fast-jev-compaction: Claude Code plugin cuts a ~1M-token session to 86K in 1 second
viksit · x · 2026-09-18
fast-jev-compaction is an open-source Claude Code plugin (also an npm library) that replaces lossy LLM-summarization compaction with targeted deletion:
- Jev scores every tool call and result in one fast request; stale ones are dropped or truncated, everything kept stays verbatim, and user/assistant text remains untouched and in order
- Motivation: LLM summaries are lossy — file paths, exact errors, constraints, and commands can disappear even when they matter later
- Real-world result: 1 second to shrink a Claude session from nearly 1M tokens to 86K
- 600+ stars on GitHub; install and configure it directly from within Claude
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