Crypto x AI & Emerging Tech

x402

An open payment standard, created by Coinbase in 2025 and now governed by the x402 Foundation under the Linux Foundation. It revives the long-dormant "402 Payment Required" web status code so a website or API can charge for each request, typically in a stablecoin, with no account or subscription. It is designed so software, including AI agents, can pay on its own.

General education, not investment, legal or tax advice. Markets and regulation change quickly: where a definition depends on current law or on a recent event, check the latest coverage before relying on it.