Context Mode is a crucial virtualization layer for LLM-based development agents, addressing the common problem of rapidly depleting context windows and loss of session state. It functions as an MCP server that intercepts tool calls, sandboxing raw data output to achieve up to a 98% reduction in context window usage. Beyond just saving space, it ensures session continuity by tracking every file edit, git operation, task, and user decision in SQLite. When the agent compacts its conversation, Context Mode indexes these events into FTS5 and retrieves only relevant information via BM25 search, allowing the model to pick up exactly where it left off without re-injecting large amounts of data. This solution dramatically improves the efficiency and reliability of LLM agents across various platforms.
