Caveman
Productivity
Makes Claude say less and read less, cutting token use by up to 75% with the same answers.
Coding Workflows
Context Mode
Keeps bulky tool output out of Claude's memory, so long sessions last much longer.
FreeBy Mert Köseoğlu
View source What is it?
Claude's context window is its short-term memory for a session. Every tool it uses pours output into it: one web page snapshot or a list of GitHub issues can take tens of thousands of characters. Fill it up and Claude starts forgetting what it was doing.
Context Mode runs that output in a sandbox on your computer and only passes Claude the part it needs. It also keeps a searchable record of the session, the files edited, tasks and decisions, so when Claude compacts the conversation to free space it can pick up exactly where it left off. /context-mode:ctx-stats shows how much it saved.
It's free to use, but it's source-available rather than open source. That only matters if you want to resell it. The same company sells paid products for teams.
Install in Claude Code
In Claude Code run /plugin marketplace add mksglu/context-mode, then /plugin install context-mode@context-mode, then restart Claude Code (or run /reload-plugins). Check it with /context-mode:ctx-doctor.
Try this prompt
Paste into Claude Code
/context-mode:ctx-statsWho it's for
Heavy Claude Code users who keep hitting usage limits or losing the thread in long sessions.
Best for
- Stretching usage limits
- All-day sessions
- Browser and GitHub-heavy work
- Picking up after compaction
Why it made the list
It hit number one on Hacker News, and the savings show up in the first session.
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