context-mode Sandboxes Tool Output for a Claimed 98% Reduction and Enforces Routing Across 17 Platforms

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mksglu/context-mode has 19,659 stars and 1,410 forks since 2026-02-23 (~119 stars/day). It attacks context window pressure from a different angle than the token-compression proxies: rather than compressing what goes to the model, it sandboxes tool output entirely — claiming a 98% reduction — while persisting session memory and enforcing routing across 17 platforms via MCP plus hooks, covering Claude Code, Codex, Cursor, Copilot, Kiro and Antigravity. The 135 open issues suggest the hook-based enforcement is fragile across that many hosts, which is the practical risk with any tool that inserts itself between every agent and every tool call.