Developer Guides
Developer Guides
Hands-on, step-by-step integration guides for building with Across Protocol.
Available Guides
Integrate Across Swap API
Build a complete crosschain bridge from scratch — discover chains, look up tokens, get a quote, and execute a USDC transfer from Arbitrum to Base using viem.
Crosschain Deposit into Aave
Bridge USDC from Arbitrum to Ethereum, swap it to ETH, and deposit directly into Aave's lending pool — all in a single user transaction using embedded actions.