mksglu/context-mode

What is it?

Key features

• 01Runs tool output in a sandbox so raw data stays out of the context window.
• 02Stores session events in SQLite and restores relevant ones after compaction.
• 03Searches indexed content with FTS5 and BM25 ranking.
• 04Provides ctx_execute and related tools for running scripts that return only results.
• 05Uses platform hooks to route tool calls across supported AI coding clients.

Use cases

• Long coding sessions where MCP tools such as browser or issue fetchers flood the context.
• Analyzing many source files by having the agent write a script that outputs only the summary.
• Resuming work after the agent compacts its conversation without re-reading prior state.

Quick start

1. 1

   Install the Claude Code plugin from the marketplace

   /plugin marketplace add mksglu/context-mode
2. 2

   Install the context-mode plugin

   /plugin install context-mode@context-mode
3. 3

   Restart Claude Code, then verify the install with the doctor command

   /context-mode:ctx-doctor

Things to know

• !The README's automatic setup is documented mainly for Claude Code; other platforms need manual config files.
• !The license is ELv2, which restricts providing the software as a hosted or managed service.
• !Some features, like the Insight dashboard, rely on a hosted service at context-mode.com.

Topics

FAQ

What is context-mode?

MCP server for AI coding agents that keeps raw tool output out of the context window and persists session state across compaction. Context Mode addresses the context-window problem that AI coding agents hit when MCP tools return large raw outputs such as browser snapshots, issue lists or log files. It runs tool work inside a sandbox so only the final result enters the conversation, and the project reports a 98% reduction on a 315 KB example.

Is context-mode free to use? What license does it have?

context-mode is open source under the Other license. Check the license terms before using it in commercial products.

Is context-mode still maintained?

Actively maintained. The last commit to context-mode was on Oct 19, 2026.

What can I use context-mode for?

Long coding sessions where MCP tools such as browser or issue fetchers flood the context. Analyzing many source files by having the agent write a script that outputs only the summary. Resuming work after the agent compacts its conversation without re-reading prior state.

How do I install context-mode?

Install the Claude Code plugin from the marketplace: /plugin marketplace add mksglu/context-mode Install the context-mode plugin: /plugin install context-mode@context-mode Restart Claude Code, then verify the install with the doctor command: /context-mode:ctx-doctor

Where can I get context-mode?

The source code and installation instructions are on GitHub: https://github.com/mksglu/context-mode