On-Chain Interface

Airlift is available through LiFi's API on the following mainnet chains.

• Ethereum

• Optimism

• Binance Smart Chain

• Polygon PoS

• Base

• Mode

• Arbitrum

• Avalanche

• Linea

• Scroll

Airlift is exclusively used by LiFi on all chains that LiFi is enabled on. If you would like to use Airlift on a chain that was not listed above, please contact us.

There is a single point of entry for Airlift's smart contracts: the send function.

function send(
    address token, 
    uint256 amount, 
    bytes32 receiver, 
    uint256 destinationChainId, 
    address refundAddress
) payable returns (bytes memory)

This send function allows you to send any token registered to Airlift across chains. The parameters are as follows:

• token - The address of the token that you wish to send across chains.

• amount - The amount of the token that you wish to send across chains.

• receiver - The address of the receiver in bytes32 format. If an ethereum based wallet, encode the address as packed.

• destinationChainId - The EVM Chain ID of the destination chain. If the destination chain is not an EVM, special IDs will be allocated.

• refundAddress - The EVM address that the GMP addresses should refund unused cross-chain gas to in case too much was provided.

Note that the send function is payable. Native gas currency must be included to pay for the cross-chain transfer, since the destination chain transfer must be incentivized. The amount required can be estimated via our API's quote endpoint.