English | 中文 # dsh-compressor 
A slim port of Headroom. Compresses tool output and cuts up to 20% of context, without affecting the model's context cache or agent performance. ## Install bash dsh plugin --profile web add dsh-compressor ## How it works A tool run leaves a long log / JSON / diff. Only a small part of it is useful. This plugin shortens that output before the next turn, keeps the original on disk, leaves the already-sent prefix alone so the cache stays valid, and gives the agent a tool to pull the full context back. mermaid flowchart LR A[Tool finishes] --> B{Output long?} B -->|no| C[Full text stays] B -->|yes| D[Shorten and save original] D --> E[Model sees the useful part] Compressor code comes from Headroom. Wired in today: Log / Smart / Text / Search / Diff. The only crushers not wired in yet: - [ ] Code-aware (tree-sitter, source code) - [ ] Kompress (ONNX, long prose) ## Develop bash cd plugins/dsh-compressor pnpm install pnpm test ## Contributing Open PRs on this repo, not on Headroom. Plugin code is in plugins/dsh-compressor (Node 22+, pnpm): bash cd plugins/dsh-compressor pnpm install pnpm test pnpm typecheck Crushers live in crates/: bash cargo test --workspace make test-parity One change per PR. Plugin changes need tests; crusher changes need cargo test. Details: CONTRIBUTING.md. This plugin is MIT. crates/headroom-* remains Apache-2.0.
Review
Why we picked it
Pending human review — the facts below come from the source repository.
What it does
DeepSeek Harness plugin: compress tool output, cut up to 20% of context, without touching the context cache or agent performance.
Who it’s for
Users who want this capability in DSH; check the source and docs before installing.
Risks & caveats
- No strong risk signals; still worth a source look before installing.