Cardano adopts x402 payment standard for AI agents

Cardano has integrated the x402 software development kit, enabling AI agents and applications to pay for online services using ADA or other Cardano-based tokens. The x402 standard transforms the "402 Payment Required" HTTP response into an automated checkout process, allowing agents to purchase data or computing power without manual registration or subscriptions. Originally created by Coinbase in 2025 and now under the Linux Foundation, the standard is supported by major firms including Visa, Mastercard, and Google. Cardano's implementation currently supports TypeScript, with Python support planned for the future. While a transaction has been verified on the Cardano pre-production network, it has not yet been deployed on the mainnet.