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Fuse
Give your AI agents a budget they can't exceed
Fuse is a prepaid API wallet for AI agents. Top up a wallet, generate proxy keys with hard spend caps, and point your agent at one URL. If a key's budget runs out, the call gets blocked before it reaches the provider, not billed after. One URL, 9 providers (OpenAI, Anthropic, Groq, xAI, Kimi, DeepSeek, Gemini and more), 50+ models. Works with LangChain, CrewAI, and any OpenAI-compatible SDK. Just swap the base_url. $10 free credit to start.
Hi Product Hunt, I'm Lawal, the solo founder of Fuse.
I built this because I kept getting scared of my own AI agents. You hand an agent an API key, it hits a loop or a long chain of calls, and you wake up to a bill you never agreed to. The stories are real. One team reportedly ran up a 500 million dollar Claude bill in a single month, and Uber reportedly burned through its entire 2026 Claude Code budget by April.
The root problem is that API keys have no ceiling. Your agent can spend infinitely until you happen to notice.
Fuse fixes that. You top up a prepaid wallet, generate proxy keys with hard spend caps, and point your agent at one URL. If a key's budget runs out, the call gets blocked before it reaches the provider. Not billed after. Blocked before.
A few things I focused on:
One URL across 9 providers (OpenAI, Anthropic, Groq, Cohere, xAI, Kimi, DeepSeek, Gemini), 50+ models
Hard per-key spend caps, so one runaway agent can't drain everything
Your real API keys stay in a vault and never touch your agents
Works with LangChain, CrewAI, Haystack, and any OpenAI-compatible SDK by just swapping the base_url
The biggest thing I learned building this: the hard part isn't the proxy, it's getting the billing exactly right down to the cent. People won't trust a wallet that might silently overcharge them, so I spent a lot of time making the ledger provably correct.
Every new account gets 10 dollars in free credit to try it.
I would genuinely love your feedback, especially on this: what would make you trust a proxy like this with your API keys and your budget?
getfuse.online
About Fuse on Product Hunt
“Give your AI agents a budget they can't exceed”
Fuse was submitted on Product Hunt and earned 0 upvotes and 3 comments, placing #61 on the daily leaderboard. Fuse is a prepaid API wallet for AI agents. Top up a wallet, generate proxy keys with hard spend caps, and point your agent at one URL. If a key's budget runs out, the call gets blocked before it reaches the provider, not billed after. One URL, 9 providers (OpenAI, Anthropic, Groq, xAI, Kimi, DeepSeek, Gemini and more), 50+ models. Works with LangChain, CrewAI, and any OpenAI-compatible SDK. Just swap the base_url. $10 free credit to start.
On the analytics side, Fuse competes within API, Developer Tools and Artificial Intelligence — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how Fuse performed against the three products that launched closest to it on the same day.
Who hunted Fuse?
Fuse was hunted by Lawal Adamu. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Fuse including community comment highlights and product details, visit the product overview.
Lawal Adamu