A ticket spike can spend more in a day than the bot spent all last month.
Support bots
Stop a busy support week from emptying the provider account.
The bot keeps answering until the ceiling you set. The next request after that is a 402, and the provider is not called.
What goes wrong without a ceiling.
The provider bill arrives after the traffic. Fuse is the stop in front of that call.
The provider dashboard shows the bill after the fact. Fuse stops the next call.
A warning email fires at the percent you pick, before the hard stop.
Three ways to cap a support bot.
One project for the bot
Store the provider key the bot uses. Turn on only the models it is allowed to call.
Monthly $25 · warn at 80% · Europe/Budapest
Warn, then block
Set the warning at 80%. The first request that would cross the limit returns 402.
402 · fuse_blown · provider not called
Keep the transcript out
The log shows model, tokens, and cost. The customer message is not stored.
14:02 · gemini-2.5-flash · $0.002 · 200