context-mode sandboxes tool output entirely for a claimed 98% reduction across 17 platforms.

19,659 stars since February, ~119/day, 1,410 forks. Different angle from the token-compression proxies: rather than compressing what goes to the model, it sandboxes tool output completely while persisting session memory and enforcing routing via MCP plus hooks across Claude Code, Codex, Cursor, Copilot, Kiro and Antigravity. 135 open issues suggests the hook-based enforcement is fragile across that many hosts, which is the standing risk with anything that inserts itself between every agent and every tool call.