Cross-Chain Contract Calls
Swing API and SDK provide a cross-chain contract feature that allows developers to execute contract calls on different blockchains, enabling interoperability between blockchain ecosystems.
How it Works
The cross-chain contract feature works by passing contract call data through a bridge to execute the final contract call on the destination blockchain. This allows developers to perform cross-chain transactions in a single transaction on the source blockchain, without the need to switch RPC or sign another transaction on the destination blockchain.
For example, in a normal any-to-any cross-chain swap, converting MATIC on Polygon to ETH on Ethereum requires several steps. With Swing, you can perform all three steps in a single transaction on Polygon by passing the destination swap contract call data through a bridge to execute the final swap for the user and then send the swapped tokens to the user.
- Celer (coming soon)
Note: Same-chain contract calls are not available yet.
By enabling cross-chain interoperability, Swing’s cross-chain contract feature unlocks new possibilities for DeFi applications, making them more flexible, efficient, and user-friendly. Below you can find some of the most exciting use cases:
1. Cross-Chain Staking Protocol Deposits
Users can use any asset on any supported chain to stake a token on a different chain. This provides flexibility to the users by allowing them to stake with one transaction without having to figure out how to get an asset to stake.
Example: A user can send USDT on Polygon to stake ETH on Ethereum to Lido Protocol and receive stETH in their wallet.
Some of the supported protocols:
- and more…
2. Lending Protocol Deposits
Example: Users can send USDT on Polygon to supply AVAX on Avalanche to Aave Protocol and receive aAVAX in their wallet to start earning rewards.
3. Liquidity Protocol Deposits
Example: User sends USDC on Ethereum to deposit into a single asset pool on GMX to receive rewards.
Possibilities are endless… talk to us about your use case and how we can help.
To implement the cross-chain contract feature in your application, follow one of these guides:
- API Integration Guide
- SDK Integration Guide (TBD)
- SDK Lido Staking Template (TBD)