MAINNET

Arbitrum x402 Payments

Full x402 v2 support for Arbitrum One. Settle payments on Ethereum's leading Layer 2 with the most active DeFi ecosystem.

Arbitrum OneNetwork

Endpoint onlineFacilitator

$0Dexter fee

Arbitrum Integration

Use the public Dexter endpoint with the network value shown in the working server example.

https://x402.dexter.cashEndpoint online

Open the SDK guide Read the facilitator docs

npm i @dexterai/x402

import { createX402Server } from '@dexterai/x402/server';

const server = createX402Server({
  payTo: 'YourArbitrumAddress',
  network: 'eip155:42161',
  facilitatorUrl: 'https://x402.dexter.cash',
});

const requirements = await server.buildRequirements({
  amountAtomic: '30000',
  resourceUrl: '/api/paid-endpoint',
});

res.setHeader('PAYMENT-REQUIRED', server.encodeRequirements(requirements));
res.status(402).end();

What Arbitrum Supports

Exact and Upto Schemes

Fixed-price (exact) and usage-based billing (upto). Authorize a max, settle for actual usage.

Arbitrum One Settlement

Reach users already active in the most sophisticated DeFi ecosystem.

Gas-Free for Buyers

Dexter sponsors ETH fees, buyers only need USDC.

Same API Surface

All supported networks use the same API, so one integration works everywhere.