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CommunityTools & Integrations8 starsVerified 2026-09-22

OMP Jev Compaction

An omp plugin that does verbatim Jev-scored context reduction: stale tool calls and results are truncated to a short head plus a recoverable note, while sticky rewrites keep the provider's prompt cache intact.

Category
Tools & Integrations
Published by
Community
Author
jerryfane
Added
2026-09-22
Tagscommunitytypescriptcompactioncoding-agentopenrouter

Highlights

  • Nothing is rewritten or summarized: stale tool calls are truncated to a short head plus a recoverable note.
  • A 16,198-message replay produced 3 rewrites and 37 reuses over 40 requests, with 0 prefix breaks across 39 checks.
  • A cache guard skips sessions at 80% or more cache reads; on 14 live sessions it protected $1.81 per request round while capturing $2.61.
  • One client covers the TypeSafe API and OpenRouter; OpenRouter measured about 430 ms and $0.0000198 per decision request.
  • Dropped payloads are written to ~/.omp/jev-spill/<hash>.txt and recovered with one read instead of re-running the tool.

Quickstart

bash
omp plugin install jerryfane/omp-jev-compaction
omp

Watch out

MIT-licensed, as is the vendored fast-jev-compaction core; requires omp plus a TypeSafe or OpenRouter key, and every reduction sends conversation state, including tool names, inputs, and message text, to the decision endpoint.

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