Arbitrum

MAINNET

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

$0.000461minimum payment

Stats byx402glecoming soon

The most comprehensive dataset on agent commerce that exists. Every facilitator, every resource, every chain — indexed in real time from Dexter's own data layer.

Capabilities on Arbitrum

exact + upto schemes

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

DeFi-native audience

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 chains use the same API — one integration works everywhere.

Integration

https://x402.dexter.cash

Same endpoint for all supported chains

Documentation Dashboard SDK

Arbitrum quickstart

Install

npm i @dexterai/x402

Usage

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();