Add concentrated liquidity to Uniswap V4 pools by minting a position NFT. Supports native ETH (no WETH wrapping), custom price ranges, and hook contracts. Uses Permit2 for approvals. Returns position NFT token ID. Ideal for: V4 liquidity provision, native ETH pools, hook-enabled pools, advanced LP strategies.

Remove liquidity from Uniswap V4 position NFTs. Supports partial removal (1-100%), full removal with NFT burning, and native ETH withdrawal. Specify position by token ID. Ideal for: exiting V4 positions, partial withdrawals, closing positions, native ETH retrieval.