Supported Chains, Assets and Wallets
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Base
8453
Mainnet
Production (default)
Polygon
137
Mainnet
Production
Ethereum
1
Mainnet
Production
Base is the default chain on mainnet.
On Ethereum mainnet, transactions automatically use cost-minimized (low-tier) gas fees, and the SDK manages approval and gas-estimation timing so deposits and withdrawals stay reliable, with no extra configuration required.
USD Coin
USDC
6
Base, Ethereum, Polygon
Wrapped Ether
WETH
18
Base, Ethereum
Coinbase Wrapped BTC
cbBTC
8
Base
Live supported assets and their current rates can always be queried at runtime through the SDK, including assets beyond the statically registered set (for example, staking assets).
Surf SDK is fully wallet-agnostic. It works with any wallet that exposes an EIP-1193 compatible provider:
MetaMask
WalletConnect
Coinbase Wallet
Safe (Gnosis) multi-sig
Rabby
Phantom
Trust Wallet
Any browser-injected wallet
The SDK is extensible. Partners can register additional chains, tokens and wallet adapters at build time to fit their own deployment requirements. Contact the Surf team for guidance on custom chain and asset registration.
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