Across

Across is a decentralized interoperability protocol designed to enable fast, secure, and cost-efficient crosschain token bridging and swaps. It leverages an intent-based architecture that allows users to specify desired outcomes rather than execution paths, improving security and reducing costs compared to traditional bridges. Across supports a growing number of blockchain networks, making it suitable for developers building multichain applications that require seamless asset transfers and swaps.

The protocol offers a Swap API that abstracts the complexity of crosschain swaps into a single composable contract call, enabling developers to integrate 1-click crosschain swaps directly into their applications. This API supports bridging and swapping tokens simultaneously, streamlining user experience and reducing friction. Additionally, Across provides an SDK and REST APIs for easy integration, allowing developers to embed crosschain actions such as staking and minting with bridging abstracted away.

What sets Across apart is its focus on security tradeoffs through its intent-based model, which enhances decentralization and reduces reliance on centralized intermediaries. The protocol also supports a network of independent relayers who facilitate transaction settlement and can earn rewards, contributing to the system's decentralization and robustness. Across is actively maintained with comprehensive documentation, developer support via Discord, and ongoing audits to ensure security.

Developers can get started quickly by following the Bridge Integration Guide or Swap Integration Guide available in the documentation. The protocol supports multiple mainnet and testnet chains, with contract addresses and technical details openly available. Across is suited for teams building DeFi platforms, DAO tooling, and enterprise blockchain solutions that require reliable crosschain interoperability.