I built ai-usage to see what's left of shared Claude Code, Codex and Grok subscriptions

This story is from 2026-10-18. It is preserved in the archive; the latest stories are on the live feed.

I made ai-usage, a small open-source tool for teams where people, servers and bots share a few Claude Code, Codex and Grok subscriptions. The trouble with a shared subscription is that each machine sees only its own part. A limit runs out in the middle of a task, and nobody knows which machine used…