Show HN: Context Mode – 315 KB of MCP output becomes 5.4 KB in Claude Code (github.com)

A new tool called Context Mode has been introduced for Claude Code, drastically improving how large outputs from various tools are handled within the model's context window. By compressing data from 315 KB to just 5.4 KB—an astounding 98% reduction—Context Mode addresses the critical challenge of context consumption that frequently hampers AI interactions. The tool processes outputs in isolated sandboxes, capturing only relevant summaries while maintaining the raw data securely outside the model's context, thus saving significant space and prolonging the session's usability. Significantly, this innovation enhances the efficiency of AI systems that utilize multiple external tools, optimizing the context window which often becomes quickly saturated with unnecessary information (e.g., fetching logs or executing code). Context Mode can facilitate up to ten programming languages, employs intelligent data extraction, and leverages a robust indexing mechanism to provide precise search results. With features such as automatic routing and real-time context usage stats, it empowers developers to construct more effective AI-driven applications without the burden of redundant data bogging down performance. Overall, Context Mode not only improves performance but also extends the operational lifespan of sessions, making it a vital addition to the AI/ML toolkit.