Supported chains

Unlink is multichain. SDK clients connect to a hosted deployment by its environment name. Pass that name when you create a client, and use the matching chain ID when you derive an account with account.fromWallet.

Environments

Only production environments are listed here.

Testnets

Environment	Network	Chain ID	Status
`arc-testnet`	Arc Testnet	5042002	Available
`avalanche-fuji`	Avalanche Fuji	43113	Available
`base-sepolia`	Base Sepolia	84532	Available
`bsc-testnet`	BSC Testnet	97	Available
`ethereum-sepolia`	Ethereum Sepolia	11155111	Available
`monad-testnet`	Monad Testnet	10143	Available

Mainnets

Mainnet environments currently require an access grant before use.

Environment	Network	Chain ID	Status
`base`	Base	8453	Contact us for access
`bsc`	BNB Smart Chain	56	Contact us for access
`monad`	Monad	143	Contact us for access

const client = createUnlinkClient({
  environment: "base-sepolia",
  account: unlinkAccount,
});

The chain ID you pass to account.fromWallet must match the environment’s chain. Deriving with the wrong chain ID produces a different account. See Accounts and keys for how derivation binds to chainId.

Get testnet gas

Use these public faucets to fund wallets with native testnet gas.

Network	Environment	Gas token	Faucet
Arc Testnet	`arc-testnet`	USDC	Circle faucet
Avalanche Fuji	`avalanche-fuji`	AVAX	Avalanche faucet
Base Sepolia	`base-sepolia`	ETH	Alchemy faucet
BSC Testnet	`bsc-testnet`	tBNB	BNB Chain faucet
Ethereum Sepolia	`ethereum-sepolia`	ETH	Alchemy faucet
Monad Testnet	`monad-testnet`	MON	Monad faucet

Get Started

Concepts

Build

Reference

Tutorial

Environments

Testnets

Mainnets

Get testnet gas

​Environments

​Testnets

​Mainnets

​Get testnet gas

Environments

Testnets

Mainnets

Get testnet gas