x402.
An open payment standard built on HTTP's 402 Payment Required: the server answers a request with what it costs, and the agent pays and sends the request again.
In our drives.
Each drive records whether the product takes x402 payments. Where it does, our agent may make one small payment there.
From the source
“The PAYMENT-REQUIRED header is the canonical HTTP transport location for the PaymentRequired object.”
x402 specification, checked 3 Oct 2026See where an agent gets stuck in your product.
Free: what an agent finds on your site and any wall in its way.