Providing liquidity with Uniswap v3 on Polygon is the same as providing liquidity on Ethereum.
This guide will show you how to select a pair, a fee tier, a price range, and a deposit amount using the Uniswap web app: How to add liquidity on Uniswap v3
Please note the following when providing liquidity on Polygon:
- You will only earn fees from trading volume on Polygon. Liquidity positions will not earn fees from swap volume on other networks because there is no swap routing between different networks.
- Network costs may be different than when providing liquidity on Ethereum
You can find Polygon liquidity pool data on the Uniswap Info site: https://info.uniswap.org/#/polygon/*
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