TLDR Tech / Crypto
x402 "Upto": Pre-Authorize Agentic Payments, Settle Amount Onchain
The new "Upto" scheme, a major scalability upgrade to the x402 machine-to-machine payment standard, lets an AI agent pre-authorize up to a maximum amount, use as much as it actually needs, and settle the final cost onchain, replacing the prior fixed pay-per-request model. It's a meaningful step toward making agentic commerce economically practical, since fixed per-call pricing doesn't map cleanly to variable-cost AI inference. The upgrade positions x402 as an increasingly credible infrastructure for the emerging agent-to-service payments stack.
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