Hazumi News | Show HN: Context Mode – 315 KB of MCP output becomes 5.4 KB in Claude Code

Every MCP tool call dumps raw data into Claude Code's 200K context window. A Playwright snapshot costs 56 KB, 20 GitHub issues cost 59 KB. After 30 minutes, 40% of your context is gone.

I built an MCP server that sits between Claude Code and these outputs. It processes them in sandboxes and only returns summaries. 315 KB becomes 5.4 KB.

It supports 10 language runtimes, SQLite FTS5 with BM25 ranking for search, and batch execution. Session time before slowdown goes from ~30 min to ~3 hours.

MIT licensed, single command install:

/plugin marketplace add mksglu/claude-context-mode

/plugin install context-mode@claude-context-mode

Benchmarks and source: https://github.com/mksglu/claude-context-mode

Would love feedback from anyone hitting context limits in Claude Code.

Summary

This article introduces Claude, an AI-powered context mode that enhances the capabilities of language models by allowing them to learn and adapt to specific contexts, enabling more natural and contextual conversations.

Story

Show HN: Context Mode – 315 KB of MCP output becomes 5.4 KB in Claude Code