Some people keep asking me about x402 on @SeiNetwork, so let’s clear it up.
Sei is actually one of the first chains to integrate x402, known as the TCP/IP for value.
And it’s a pretty big deal. Let me break it down. 👇
When HTTP was first built, status code 402 = Payment Required was reserved for native online payments but the tech didn’t exist yet. No PayPal. No Stripe. No crypto.
Fast forward to now: @coinbase actually turned it on through x402, using USDC as the native payment rail.
Here’s what happens in simple terms:
1️⃣ Client requests a resource
2️⃣ Server replies “402 pay 0.10 USDC to this address”
3️⃣ Client pays on-chain
4️⃣ Server delivers the content instantly
That’s TCP/IP for value transfer.
And why does it matter for Sei?
Because latency and throughput are everything.
x402 only works on chains that can handle sub-second finality and cheap fees.
That’s why it’s perfect for #Sei.
Use cases are massive:
🔹AI agents that pay per API call.
🔹Micropayments for content, research, or games.
🔹API monetization without billing setup.
🔹Live data feeds charging per query.
If you’re building for the next gen Internet, x402 + Sei = instant, permissionless monetization.
No PayPal, no middlemen. Just direct, machine to machine value flow.
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