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@sisu-ai/mw-context-compressor

v9.0.0

Published

Reduce token costs by compressing long conversations while preserving useful recent context.

Vulnerabilities

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Links

Git

Maintainers

lejahmielejahmie

Keywords

sisuaiai-agentagenticmiddlewarecontext-compressor

Readme

@sisu-ai/mw-context-compressor

Reduce token costs by compressing long conversations while preserving useful recent context.

Tests CodeQL License Downloads PRs Welcome

  • Wraps ctx.model.generate to summarize older messages when the context grows beyond a size threshold.
  • Preserves the last keepRecent messages unmodified.
  • Keeps essential facts and URLs; emits a compact assistant summary message that replaces older history.

Usage

import { contextCompressor } from '@sisu-ai/mw-context-compressor';

agent.use(contextCompressor({ maxChars: 200_000, keepRecent: 8, summaryMaxChars: 12_000 }));

Options

  • maxChars (default 200k): approximate character budget before compressing.
  • keepRecent (default 8): number of most recent messages to retain verbatim.
  • summaryMaxChars (default 12k): target maximum size of the generated summary message.

Note: This is a best-effort char-based heuristic; exact token accounting varies by model.

Community & Support

Discover what you can do through examples or documentation. Check it out at https://github.com/finger-gun/sisu. Example projects live under examples/ in the repo.

Documentation

Core — Package docs · Error types

Adapters — OpenAI · Anthropic · Ollama

Anthropic — hello · control-flow · stream · weather

Ollama — hello · stream · vision · weather · web-search

OpenAI — hello · weather · stream · vision · reasoning · react · control-flow · branch · parallel · graph · orchestration · orchestration-adaptive · guardrails · error-handling · rag-chroma · web-search · web-fetch · wikipedia · terminal · github-projects · server · aws-s3 · azure-blob

Contributing

We build Sisu in the open. Contributions welcome.

Contributing Guide · Report a Bug · Request a Feature · Code of Conduct

Star on GitHub if Sisu helps you build better agents.

Quiet, determined, relentlessly useful.

Apache 2.0 License