burnban

burnban is the local instrument for AI agent spend. One binary sits in the request path, meters every token, and caps budgets before they blow instead of after. Nothing leaves your machine, so there is no dashboard to log into and no traffic to hand over. It also prices your flat-rate plan against real metered rates, so you finally see what those tokens are worth. Open source and MIT licensed. Sync and team budgets are next; the waitlist at burnban.dev sees them first.