Bridge to Quai

Technical details and contract addresses for bridging assets to and from Quai Network via Symbiosis.

Bridge assets to Quai Network using the Symbiosis cross-chain protocol. Symbiosis enables seamless transfers between Quai and other major networks including Ethereum and Base.

Quick Bridge Links

Bridge WQUAI from Base to Quai Network

Bridge WQUAI from Ethereum to Quai Network

Bridge USDT from Ethereum to Quai Network

Note: USDT bridging from Base to Quai is not currently available. For USDT, use Ethereum → Quai.

Key Contract Addresses

Use these exact addresses when bridging to avoid interacting with the wrong tokens.

Network	Token	Address
Quai	USDT	0x0049F7cbCa3556C2DfaE62Aafa7015F99de1b8f5
Quai	WQUAI	0x006C3e2AaAE5DB1bCd11A1a097cE572312EADdBB
Base	QUAI (Symbiosis)	0x5c97D726bf5130AE15408cE32bc764e458320D2f
Ethereum	QUAI (Symbiosis)	0x70b7f7044D2ca8E2F1E999B90EF16d7Cb7A0cDA1

Add Token to Wallet

Use the buttons below to add the QUAI token (Symbiosis representation) to your wallet on Base or Ethereum. Make sure your wallet (e.g., MetaMask) is installed. The button will switch to the correct network and prompt an “Add Token” dialog.

Add QUAI on Base to Base Wallet

Add QUAI on Ethereum to Ethereum Wallet

Symbiosis Bridge

Symbiosis is a cross-chain AMM DEX that pools liquidity across multiple blockchains, allowing users to swap any token on any supported chain with a single transaction.

Symbiosis App

Access the Symbiosis bridge interface to transfer assets to and from Quai Network.

Quai Network Configuration

Property	Value
Chain ID	9
RPC Endpoint	https://rpc.quai.network/cyprus1
Block Explorer	QuaiScan
Filter Block Offset	500

Smart Contract Addresses on Quai

The following contracts are deployed on Quai Network (Chain ID: 9) for the Symbiosis bridge integration.

Contract	Address
MetaRouter	0x001C50a8527fA172A5FBcb65e5402D55cf319ADe
MetaRouterGateway	0x0024334B36aDe5b7FD9b168aD68Ad288d85Ba261
Bridge	0x003d4d57930b2E0887606bE461ab167CAC2E769e
Synthesis	0x004E53ED63b674B1e64Bed32eF037e1f94fc1996
Portal	0x003d9F9666853fD4A10351FF5364c602470A7cF6
Fabric	0x005a04B1EB81A8d1591602eb58742DEee478485D
MulticallRouter	0x0049ff6C9ACe2BAf67ad0466D82e0A2Dc7E309d1

Token on Quai

Token	Address	Decimals
WQUAI (Wrapped Quai)	0x006C3e2AaAE5DB1bCd11A1a097cE572312EADdBB	18

Symbiosis Contracts on Source Chains

Ethereum (Chain ID: 1)

Contract	Address
MetaRouter	0xf621Fb08BBE51aF70e7E0F4EA63496894166Ff7F
MetaRouterGateway	0xfCEF2Fe72413b65d3F393d278A714caD87512bcd
Bridge	0x5523985926Aa12BA58DC5Ad00DDca99678D7227E
Synthesis	0xD7c3DF25683871d18BC838E4F619126442Dd38B3
Portal	0xb8f275fBf7A959F4BCE59999A2EF122A099e81A8
Fabric	0xbBFb7cb70f84fb6fE1Cb13e42A0B71EFDe769428
MulticallRouter	0x49d3Fc00f3ACf80FABCb42D7681667B20F60889A

USDT on Ethereum: 0xdAC17F958D2ee523a2206206994597C13D831ec7 (6 decimals)

Base (Chain ID: 8453)

Contract	Address
MetaRouter	0x691df9C4561d95a4a726313089c8536dd682b946
MetaRouterGateway	0x41Ae964d0F61Bb5F5e253141A462aD6F3b625B92
Bridge	0x8097f0B9f06C27AF9579F75762F971D745bb222F
Synthesis	0x9F6424FE88fBe7785Fa34F0E369F192bF38E7A6e
Portal	0xEE981B2459331AD268cc63CE6167b446AF4161f8
Fabric	0x44487a445a7595446309464A82244B4bD4e325D5
MulticallRouter	0x01A3c8E513B758EBB011F7AFaf6C37616c9C24d9

Integration Notes

• CoinGecko Platform ID: quai-network
• Gas Token ID: quai-network
• Quai uses the Cyprus1 zone for cross-chain operations
• Transactions on Quai use standard EVM-compatible signing for the account-based (Quai) token

USDT is not currently available as a native token on Quai Network. When bridging USDT from other chains, it will be represented as a synthetic asset through the Symbiosis Synthesis contract.

Additional Resources

Symbiosis Docs

Full documentation for the Symbiosis protocol

Symbiosis SDK

JavaScript SDK for programmatic bridge integration