I build software that saves people time
Joined January 2026
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Good or bad in this economy?
Someone stole a developer’s Gemini API key.
48 hours later the bill was $82,314. Their normal bill was $180.
They had billing alerts. The alerts arrived after the damage.
Alerts tell you after. A hard ceiling stops the next call. I built one 👇
Fuse sits in front of your OpenAI / Claude / Gemini keys. Your app only holds a Fuse key with a dollar ceiling. If it leaks, the most anyone can spend is that ceiling. Every call after is refused before it reaches the provider.
ospalabs.com - 30 days free
What Fuse does, in one post:
You point your OpenAI, Anthropic or Google SDK at Fuse.
You set a daily or monthly dollar limit per project
When your agent is about to go over it, Fuse blocks the request and your app gets an error instead of a bigger bill.
Your keys. Your provider bill. No prompts stored.
ospalabs.com/fuse
Fuse is out.
ospalabs.com/fuse
Not a warning. Not a report. A limit.
Set a daily limit of $25 for your AI agent. At $25, it stops.
Why a wall and not an alert:
An alert tells you about the damage. A limit stops it.
Account wide limits do not know which agent went rogue. One bad loop eats the whole team's budget and everything else goes down with it.
Fuse gives each agent its own limit. The cost of each request is checked before it's sent.
If Fuse can't check, it blocks the request instead of letting it through.
The worst case goes from "$800 overnight" to "one agent stopped at $25".