Bitcoin's L2 ecosystem is evolving fast, stablecoins and tokenized assets are coming to Lightning and beyond. The Kaleido SDK is the developer toolkit to swap them. In this keynote we'll walk through the architecture of the KaleidoSwap Protocol, API, and SDK, and show real code examples of how to connect to an RGB Lightning Node, get BTC and RGB asset liquidity from an LSP, and execute trustless atomic swaps across Bitcoin L2s.