Hey,
Just finished integrating x402 (Coinbase's new payment protocol for AI agents) into an API endpoint after a few days working through the official docs and SDK.
It’s running end-to-end: send a request, receive a 402, sign a USDC transfer, retry, and get the response back.
A lot of the documentation is confusing due to differences between v1 and v2, so I compiled everything into a single post that should make things clearer. It includes an interactive demo where you can generate a wallet, fund it, and make a real x402 payment against a live endpoint.
The goal was to create one resource that’s enough to understand x402 and build your own agent payment integration. The guide also includes some background on the origins of 402.
Check it out here: https://simplescraper.io/blog/x402-payment-protocol
Let me know what you think!
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