"Stripe demanded integration. None of these worked for a world where software talks to software at millisecond intervals. Then came x402. The protocol embeds payments directly into HTTP, allowing any API call to include a payment. No checkout flows. No account creation. No human in the loop. Just a request, a 402 response with a price quote, and a cryptographic payment proof attached to the retry."
"Since launching in May 2025, x402 has processed over 100 million payments across APIs, applications, and AI agents. The V2 release adds multi-chain support, dynamic routing, and wallet-based sessions for high-frequency workloads like LLM inference. Tempo: Settlement Infrastructure 🔗 While x402 defines how to pay, Tempo defines where payments settle. Built by Stripe and Paradigm, it's a blockchain designed specifically for payments rather than trading or DeFi. Design partners include OpenAI, Anthropic, Visa, and Mastercard. Tempo raised USD 500 million in October 2025."
HTTP status code 402 was reserved as 'Payment Required' in 1994 as a placeholder for future web payments. x402 embeds payments directly into HTTP so any API call can include payment proofs without human checkout, accounts, or manual integration. The protocol uses a 402 response with a price quote and a cryptographic payment proof on retry to complete requests. Since May 2025, x402 processed over 100 million payments and V2 adds multi-chain support, dynamic routing, and wallet-based sessions for high-frequency LLM inference. Tempo is a payments-focused blockchain built by Stripe and Paradigm to settle x402 payments, backed by major partners and USD 500 million funding.
Read at Msuiche
Unable to calculate read time
Collection
[
|
...
]