Stop Burning Your Context Window — We Built Context Mode
Summary
Context Mode is an open-source MCP server that sits between Claude Code and external tool outputs to dramatically reduce context window usage, reportedly cutting raw output from 315 KB to 5.4 KB (98%). It uses a sandboxed subprocess model, supports multiple runtimes, and indexes knowledge base content with SQLite FTS5 and BM25 for precise retrieval. The post includes install instructions, architectural details, and licensing information.