There are several types of bots that traders use for DeFi (decentralized finance) on various protocols, such as Uniswap, SushiSwap, Curve, and others. Some of the commonly used bots in DeFi trading are:

1. Arbitrage bots: These bots scan different decentralized exchanges (DEXs) and identify price discrepancies between them. They then buy the asset from the lower-priced exchange and sell it at a higher price on the higher-priced exchange, earning a profit.
2. Market-making bots: These bots provide liquidity to DEXs by placing limit orders on both sides of the order book. They aim to profit from the spread between the buy and sell prices while also helping to maintain the liquidity and stability of the market.
3. Automated trading bots: These bots use pre-set trading strategies and algorithms to execute trades automatically based on certain market conditions, such as price movements or trading volume. Sometimes these bots are also called “sniper bot”.
4. Flash loan bots: These bots use flash loans to borrow large amounts of assets from lending protocols such as Aave and then use these assets for arbitrage, market making, or other trading strategies before returning the borrowed assets to the lending protocol.
5. Portfolio management bots: These bots help traders manage their DeFi portfolios by automating tasks such as rebalancing, asset allocation, and risk management.

It’s worth noting that using bots for DeFi trading requires a deep understanding of the market and the risks involved. Traders should also be aware of the potential risks associated with using bots, such as system errors, bugs, and vulnerabilities, which could lead to significant losses.