Chains

Chain IDs and native currency configurations for supported networks.

Import

import {
  ChainId,
  SUPPORTED_CHAINS,
  NativeCurrencyName,
  type SupportedChainsType,
} from '@uniswap/sdk-core-next'

ChainId Enum

enum ChainId {
  // Mainnets
  MAINNET = 1,
  OPTIMISM = 10,
  ARBITRUM_ONE = 42161,
  POLYGON = 137,
  BNB = 56,
  AVALANCHE = 43114,
  BASE = 8453,
  ZORA = 7777777,
  BLAST = 81457,
  ZKSYNC = 324,
  WORLDCHAIN = 480,
  UNICHAIN = 130,
  CELO = 42220,
  GNOSIS = 100,
  MOONBEAM = 1284,
  ROOTSTOCK = 30,
  SONEIUM = 1868,
  MONAD = 143,
  XLAYER = 196,
 
  // Testnets
  GOERLI = 5,
  SEPOLIA = 11155111,
  OPTIMISM_GOERLI = 420,
  OPTIMISM_SEPOLIA = 11155420,
  ARBITRUM_GOERLI = 421613,
  ARBITRUM_SEPOLIA = 421614,
  POLYGON_MUMBAI = 80001,
  BASE_GOERLI = 84531,
  BASE_SEPOLIA = 84532,
  ZORA_SEPOLIA = 999999999,
  CELO_ALFAJORES = 44787,
  UNICHAIN_SEPOLIA = 1301,
  MONAD_TESTNET = 10143,
}

Usage

import { ChainId, Ether, Token } from '@uniswap/sdk-core-next'
 
// Create ETH for a specific chain
const eth = Ether.onChain(ChainId.MAINNET)
 
// Create a token on Arbitrum
const ARB = new Token(
  ChainId.ARBITRUM_ONE,
  '0x912CE59144191C1204E64559FE8253a0e49E6548',
  18,
  'ARB',
  'Arbitrum'
)
 
// Check chain support
function isSupported(chainId: number): boolean {
  return SUPPORTED_CHAINS.includes(chainId as SupportedChainsType)
}

SUPPORTED_CHAINS

Array of all supported chain IDs:

const SUPPORTED_CHAINS = [
  ChainId.MAINNET,
  ChainId.OPTIMISM,
  ChainId.ARBITRUM_ONE,
  ChainId.POLYGON,
  ChainId.BNB,
  ChainId.AVALANCHE,
  ChainId.BASE,
  ChainId.ZORA,
  ChainId.BLAST,
  ChainId.ZKSYNC,
  ChainId.WORLDCHAIN,
  ChainId.UNICHAIN,
  ChainId.CELO,
  ChainId.ROOTSTOCK,
  ChainId.SONEIUM,
  ChainId.MONAD,
  ChainId.XLAYER,
  // ... testnets
] as const

NativeCurrencyName

Names for native currencies on different chains:

enum NativeCurrencyName {
  ETHER = 'ETH',
  MATIC = 'MATIC',
  CELO = 'CELO',
  GNOSIS = 'XDAI',
  MOONBEAM = 'GLMR',
  BNB = 'BNB',
  AVAX = 'AVAX',
  ROOTSTOCK = 'RBTC',
}

Chain Details

Chain	ID	Native	Type
Ethereum	1	ETH	Mainnet
Optimism	10	ETH	L2
Arbitrum	42161	ETH	L2
Polygon	137	MATIC	Sidechain
BNB Chain	56	BNB	L1
Avalanche	43114	AVAX	L1
Base	8453	ETH	L2
Zora	7777777	ETH	L2
Blast	81457	ETH	L2
zkSync Era	324	ETH	L2
World Chain	480	ETH	L2
Unichain	130	ETH	L2
Celo	42220	CELO	L1

Type Safety

import { ChainId, type SupportedChainsType } from '@uniswap/sdk-core-next'
 
// Type-safe chain ID
function getChainName(chainId: SupportedChainsType): string {
  switch (chainId) {
    case ChainId.MAINNET:
      return 'Ethereum'
    case ChainId.OPTIMISM:
      return 'Optimism'
    case ChainId.ARBITRUM_ONE:
      return 'Arbitrum One'
    // ... TypeScript ensures all chains are handled
    default:
      return 'Unknown'
  }
}