Let’s talk about x402, the protocol that lets AI agents pay per use with stablecoins.
First, the big picture. Data from x402.org shows 75.41 million transactions and $24.24 million settled over the past 30 days, which works out to about $0.32 per transaction on average. There were 43,100 active payers, up 152% in a month, with around 32,000 of them on Base.
But averages can be misleading. Chainalysis counted more than 138 million x402 payments on Base in total, with over 87% of individual payments under $0.10. In other words, most are calls costing just a few cents, while a small number of larger payments push the average up to 30 cents. In AI inference, 88.1% of payments came from U.S. wallets.
Now, the big players. On October 20, Mastercard showcased Agent Pay for Machines, built on x402, with a pilot settling payments on Base. But it’s still in early developer testing and isn’t commercially available yet, so don’t read too much into it.
Security is another issue we can’t ignore. V12 found 25 issues in the x402 SDK, including three critical ones. One of them was that the default client had no spending limit. The August 18 release fixed this, and the default cap is now $1 per transaction.
My take: the real signal here isn’t the total amount, but the number of payers and the frequency of small payments. Small amounts are fine—machine payments are inherently high-frequency and low-value. I’m inclined to think x402 has moved beyond demos and become a pipeline people are actually using, with Base as the main beneficiary.
If I’m wrong, where will I be wrong? Most likely, the transaction count itself is inflated. Some onchain research has analyzed x402 settlements on Base and estimated that more than 80% are self-payments or transfers between related parties. If that’s true, the growth is operators running scripts, not actual demand. So there’s just one thing I’ll be watching next: can the number of active payers keep growing without subsidies? If it stalls, I’ll take back this view.
For research and observation only; not financial advice.
First, the big picture. Data from x402.org shows 75.41 million transactions and $24.24 million settled over the past 30 days, which works out to about $0.32 per transaction on average. There were 43,100 active payers, up 152% in a month, with around 32,000 of them on Base.
But averages can be misleading. Chainalysis counted more than 138 million x402 payments on Base in total, with over 87% of individual payments under $0.10. In other words, most are calls costing just a few cents, while a small number of larger payments push the average up to 30 cents. In AI inference, 88.1% of payments came from U.S. wallets.
Now, the big players. On October 20, Mastercard showcased Agent Pay for Machines, built on x402, with a pilot settling payments on Base. But it’s still in early developer testing and isn’t commercially available yet, so don’t read too much into it.
Security is another issue we can’t ignore. V12 found 25 issues in the x402 SDK, including three critical ones. One of them was that the default client had no spending limit. The August 18 release fixed this, and the default cap is now $1 per transaction.
My take: the real signal here isn’t the total amount, but the number of payers and the frequency of small payments. Small amounts are fine—machine payments are inherently high-frequency and low-value. I’m inclined to think x402 has moved beyond demos and become a pipeline people are actually using, with Base as the main beneficiary.
If I’m wrong, where will I be wrong? Most likely, the transaction count itself is inflated. Some onchain research has analyzed x402 settlements on Base and estimated that more than 80% are self-payments or transfers between related parties. If that’s true, the growth is operators running scripts, not actual demand. So there’s just one thing I’ll be watching next: can the number of active payers keep growing without subsidies? If it stalls, I’ll take back this view.
For research and observation only; not financial advice.