Cardano
Cardano Integrates x402 Standard for Autonomous AI Payments
Cardano has added support for the x402 HTTP payment standard, enabling autonomous AI agents to execute direct payments in ADA.
Cardano joined the x402 payment standard on September 21, allowing applications and autonomous artificial intelligence agents to pay for online resources directly using ADA and Cardano native tokens. Following the development, ADA advanced approximately 4% over a 24-hour window, reaching its highest price level in four months according to data from BeInCrypto.
The x402 protocol, originally created by Coinbase before shifting under Linux Foundation governance, utilizes the HTTP 402 status code to establish automated payment handshakes. Under this framework, when an AI agent requests a paid resource such as an API call or dataset, pricing is returned in the request, and a facilitator verifies and settles the transaction on-chain without requiring conventional checkout processes. Cardano Foundation engineers created the client, server, and facilitator components, releasing a TypeScript SDK on npm, with Python support scheduled to follow.
While an end-to-end transaction has been processed on Cardano's pre-production testnet, deployment on the main network remains pending. The network faces established competition in this sector, as XRP Ledger has logged over 1.4 million x402 transactions and Coinbase has recorded more than 100 million payments across Base and Solana.
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