Fusebox — Lifetime Access (Early Adopter Deal)

Stop finding out about an OpenAI API bill spike after it happens.

Fusebox is a zero-setup spend-ceiling alert for solo OpenAI API users. Set a monthly dollar ceiling, connect a scoped read-only OpenAI Admin key (it can only read usage - it can't spend, create keys, or touch billing), and get emailed the moment you cross 50%, 80%, and 100% of your limit. The free tier only tells you after the damage is done; this is the early-warning version.

This listing is a one-time lifetime deal on the $7/mo paid tier, while the product is still new. Pay once, get the 50%/80% early-warning tier for as long as Fusebox exists - no recurring charge, ever.

How to redeem - first, buy this ($29, one-time). Then go to https://fusebox.sifatsrk.workers.dev and sign up for the free plan using the exact same email you paid with here. Your account gets upgraded to the paid tier within 24 hours - no extra step, no key to enter twice.

Built on Cloudflare Workers + D1, run by one person - no investors, no data resale, no ad network. Your OpenAI key is encrypted at rest and only ever used to read your usage, never to spend it. 30-day money-back guarantee via Gumroad if it's not for you.