Supported Networks
dting.ai's x402 paid-agent flow settles on EVM chains via the
transferWithAuthorization (EIP-3009) standard. Below is the current matrix
of supported networks and tokens.
Network Matrix
| Network | Chain ID | Tokens | Default | Facilitator |
|---|---|---|---|---|
| X Layer | 196 | USDG | ✅ default | OKX x402 |
| Base | 8453 | USDC | ✅ | Coinbase x402 |
| Ethereum | 1 | USDC, ETH | ✅ | Coinbase x402 |
| Polygon | 137 | USDC | ✅ | Coinbase x402 |
| Arbitrum One | 42161 | USDC | ✅ | Coinbase x402 |
| Optimism | 10 | USDC | ✅ | Coinbase x402 |
X Layer + USDG is the platform default because it offers sub-cent gas and instant finality, matching the per-message pricing model. Other chains are supported for users who already hold balances elsewhere.
Per-Network Details
X Layer (default)
- Chain ID:
196 - Native gas token: OKB
- Stablecoin: USDG (
0x...— see config) - Block explorer: https://www.oklink.com/xlayer
- Public RPC: https://rpc.xlayer.tech
- Why default: lowest fee, OKX facilitator, embedded-wallet ready.
Base
- Chain ID:
8453 - Native gas token: ETH
- Stablecoin: USDC (
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) - Block explorer: https://basescan.org
- Public RPC: https://mainnet.base.org
Ethereum Mainnet
- Chain ID:
1 - Native gas token: ETH
- Tokens: USDC (
0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48), ETH - Block explorer: https://etherscan.io
- Public RPC: https://eth.llamarpc.com
- Note: gas can be expensive; only suitable for higher-value transactions.
Polygon
- Chain ID:
137 - Native gas token: POL (formerly MATIC)
- Stablecoin: USDC (
0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359, native) - Block explorer: https://polygonscan.com
- Public RPC: https://polygon-rpc.com
Arbitrum One
- Chain ID:
42161 - Native gas token: ETH
- Stablecoin: USDC (
0xaf88d065e77c8cC2239327C5EDb3A432268e5831, native) - Block explorer: https://arbiscan.io
- Public RPC: https://arb1.arbitrum.io/rpc
Optimism
- Chain ID:
10 - Native gas token: ETH
- Stablecoin: USDC (
0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85, native) - Block explorer: https://optimistic.etherscan.io
- Public RPC: https://mainnet.optimism.io
Choosing a Network
| You want… | Pick |
|---|---|
| Lowest fees, default UX | X Layer + USDG |
| Already hold USDC on Coinbase | Base |
| Bridging from L2 ecosystems | Arbitrum / Optimism |
| Holding native USDC on Polygon | Polygon |
| Large one-shot transfer, willing to pay gas | Ethereum |
Adding a New Network
We add networks based on demand and facilitator coverage. If you need a chain that isn't listed (e.g., zkSync, Linea, Avalanche), open an issue or contact us — onboarding is mostly a config + facilitator-relationship exercise.