Session Context Compressor
What this skill does
Compress OpenClaw session context to reduce token usage and extend session lifetime. Uses NLP summarization (Sumy) to intelligently compact conversation history while preserving essential context. Triggers on mentions of session compression, token reduction, context cleanup, or when session size exceeds safe thresholds (~300KB). Use when (1) OpenClaw approaches 50% context limit, (2) Sessions are slowing down due to large context, (3) Reducing API costs from excessive token consumption, (4) Extending session lifetime without forced reboots.
Session Context Compressor is part of the Research & Knowledge category — research and knowledge skills that gather, search, and summarize information. You can install it on its own or alongside other research & knowledge skills from the OpenClaw catalog.
How to install Session Context Compressor
The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:
- Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
- Open the in-app Skills panel.
- Search for
clawpressorand click Install. - The skill activates automatically when an incoming message matches its description.
Install from the command line
If you already run the OpenClaw CLI, add Session Context Compressor with a single command:
openclaw skills add clawpressor
This pulls clawpressor from ClawHub and installs it into ~/.openclaw/skills/clawpressor/. Restart the OpenClaw gateway afterwards so the new skill is discovered.
How to use Session Context Compressor
Once installed, Session Context Compressor activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.
Manual install (advanced)
If you prefer manual installation:
- Click the Download .zip button above to grab
clawpressor-1.0.0.zipdirectly from our S3 mirror. - Unzip into
~/.openclaw/skills/clawpressor/(create the directory if it does not exist). - Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.
Frequently asked questions
How do I install Session Context Compressor?
Install Session Context Compressor in the OpenClaw Easy desktop app by opening the Skills panel, searching for clawpressor, and clicking Install. From a terminal you can run: openclaw skills add clawpressor. Either way the skill is placed in ~/.openclaw/skills/clawpressor/.
Is Session Context Compressor free?
Yes. Session Context Compressor is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.
What does Session Context Compressor do?
Compress OpenClaw session context to reduce token usage and extend session lifetime.
Related: more research & knowledge skills
If Session Context Compressor looks useful, you may also want to check out other research & knowledge skills in the OpenClaw catalog:
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Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models