Uniswap v4 SDK Integration App-layer SDK for swaps, quotes, and liquidity. For Solidity hook contracts, use the skill. For Trading API or v3-centric swaps, use the skill. When to Use - Token swap UI (single-hop or multi-hop) - Quote/price display before executing a trade - Liquidity position management (add/remove/collect) - Pool state reads (price, tick, liquidity) Packages --- v4 vs v3 Decision Table | Aspect | v3 | v4 | | ------------------ | -------------------------- | --------------------------------------------- | | Swap execution | SwapRouter directly | Universal Router required (V4Pl…