# Arbitrum Adds Support For x402 and MPP

> Arbitrum now supports Coinbase's hosted x402 facilitator, letting developers build x402-powered services.

**Published by:** [ETH Daily](https://ethdaily.io/)
**Published on:** 2026-07-08
**URL:** https://ethdaily.io/arbitrum-adds-support-for-x402-and-mpp

## Content

Arbitrum now supports Coinbase's hosted x402 facilitator, letting developers build x402-powered services without running their own settlement infrastructure. x402 embeds payment into the standard HTTP request-response code. It allows an agent requesting a paid API or data product can receive a payment requirement and respond programmatically as part of the same interaction. Separately, Offchain has published arbitrum-mpp, an open-source TypeScript SDK implementing the Machine Payment Protocol on Arbitrum. The package ships both client and server logic: the client produces a signed payment authorization in response to a server challenge, the server validates it, submits the transaction, and confirms settlement. Payments settle in USDC via signed transfer authorization, with no requirement for the payer to hold the gas token. Any token compatible with Uniswap's Permit2 is also supported. Disclaimer: Content is for informational and educational purposes only and does not constitute financial, investment, legal, or other professional advice. No representations or warranties are made as to accuracy, completeness, or timeliness. Use of this content is at your own risk, and you should consult a qualified professional before making decisions. No fiduciary or advisory relationship is created.

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