Optimizes Claude's context window by sandboxing large tool outputs and providing efficient data analysis tools.
Context Mode is a performance-critical optimization layer for Claude Code designed to prevent context window bloat during complex development tasks. By intercepting large outputs from logs, tests, API responses, and browser snapshots, it routes high-volume data through specialized sandboxed tools like ctx_execute and ctx_execute_file. This approach achieves up to a 98% reduction in token usage, preserving Claude's reasoning capabilities and increasing session speed by keeping the conversation history lean and relevant.
Key Features
01High-efficiency Playwright integration for 99% reduction in snapshot token costs
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03Automatic sandboxing of large command outputs including logs, tests, and builds
04Intelligent subagent routing via PreToolUse hooks for seamless performance
05Server-side indexing and FTS5 search for external documentation and local files
06Pre-built analysis workflows for JSON, CSV, and complex data structures
Use Cases
01Analyzing multi-megabyte log files or build outputs without hitting token limits
02Indexing and querying large external API documentation or documentation repositories
03Inspecting complex web application states using Playwright snapshots and accessibility trees
