Cardano
Cardano Added to Official x402 Codebase to Support Internet-Native Payments
Engineers from the Cardano Foundation have merged official protocol support into the open-source x402 payment framework.
Cardano has been integrated into the official codebase of x402, an open payment standard based on the HTTP "402 Payment Required" status code. Contributed by Cardano Foundation engineers, the TypeScript implementation was merged into the x402 Foundation repository on September 9, 2026.
The update incorporates client, server, and facilitator components, along with reference examples supporting Cardano mainnet, preprod, and preview environments. The integration allows software applications, automated APIs, and AI agents to request and settle payments directly over the Cardano network.
While independent projects like Masumi had previously deployed x402 integrations on Cardano, the standardized upstream support reduces the need for custom tooling in multi-chain payment architectures.
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