The open source payment protocol x402 is integrated with Etherlink, an EVM-compatible interface for the Tezos ecosystem. The solution was originally developed by Coinbase, a US-based cryptocurrency exchange and blockchain infrastructure company. The Etherlink implementation, called Tez402, was led by TZ APAC, an Asia-Pacific organization supporting the growth of the Tezos ecosystem.
This integration allows developers to turn any Etherlink API into a paid endpoint that charges per request. Payments are made on-chain using stablecoins, with no subscriptions, invoices, or third-party payment processors required.
The x402 protocol is designed for fast and low-cost payments for digital services. This is intended for situations where traditional payment systems are slow or expensive. This protocol brings back the HTTP 402 “Payment Required” status code and allows servers to request cryptocurrency payments directly through standard HTTP headers.
For the Etherlink release, TZ APAC took the original Coinbase implementation and added additional infrastructure. This includes a facilitator and a Permit2 proxy that enables payments with ERC-20 tokens while locking transactions to a specific destination in a non-custodial manner.
Developers can use this integration to monetize APIs, SaaS services, and Web3 applications running on Etherlink. The x402 integration is now live on the Etherlink mainnet, and developers can start implementing the payment method using the available quick start guide or by connecting to their own facilitator infrastructure.
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