18h ago
From the very beginning of my vibe coding, I wanted to integrate crypto payments into my product because I noticed that many small-scale users have a willingness to pay for one-time use services. However, with models like Stripe, it's difficult to charge fees as low as $0.05. I’ve even built the demo, and this kind of micro SaaS could go live anytime. But I’ve run into a problem: I’m receiving payments in USDC stablecoin, while I have to pay my API providers in fiat currency. I haven’t figured out how to seamlessly convert between the two. I guess I’ll have to wait a bit longer until their embedded x402 is implemented. Then, the spring for micro SaaS will truly arrive. 😂
09/08/2025
I found Base made a new protocol called x402 this Weekend. Simple - developers and agents can pay APIs directly with stablecoins through HTTP. Built-in auth and settlement. So I vibed a testnet demo. Users login with crypto wallet. Pay instantly with USDC on Base chain. My backend calls Google nano banana to generate images. Direct seamless connection. No loss at all. Honestly I don't know why nobody builds with this. Actually super good for indie devs right now. Demo video below. @CoinbaseDev
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