Current Claude subscription usage for every window (5-hour, weekly, weekly-Opus): utilization %, reset time, a forecast of where you'll land at reset, when you'd hit the limit at the current pace, and a velocity recommendation (0-120%; 100 = full speed lands exactly at the limit, <100 = throttle, >100 = headroom to spare). Reuses Claude Code's OAuth session; no API key needed.

Velocity recommendation (0-120%) for one window. 100% = keep going at full speed and you'll land exactly at the limit at reset; <100% = the fraction of your current pace you should slow to; >100% (capped at 120) = you have so much headroom you can't burn through the quota. window: '5h' (rolling 5-hour), 'weekly' (7-day), or 'weekly_opus'.