Tip: Claude Code Session Resumption Warning — Revisiting Idle Sessions Can Silently Consume 20%+ of Usage Limits
r/ClaudeAI·medium signal
Multiple Claude Code users report that revisiting terminal sessions left idle for hours triggers massive usage spikes — one user's single 'hey' message consumed 22% of their usage limit. Thread hit 720 upvotes with 209 comments, confirming widespread occurrence. Likely cause: context rehydration on resume sends full conversation history for re-processing. Workaround: start fresh sessions rather than resuming stale ones. Builders running long-lived agent sessions should be aware of this cost trap.