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This Processor enables token swaps from a Uniswap pool. The swap is executed via Uniswap’s Universal Router contract, the same contract used when swapping through the Uniswap interface. Supported pool types for swapping:
  • Uniswap V2
  • Uniswap V3
  • Uniswap V4
Libraries used in the swap Processor code:
Library nameVersion
@uniswap/universal-router-sdk2.2.4
@uniswap/sdk-core5.3.1
@uniswap/v3-sdk3.13.1
@uniswap/v2-sdk4.4.1
@uniswap/router-sdk1.10.0
@uniswap/permit2-sdk1.3.0
ethers5.7.2
Note: This Processor only swaps within a single pool and does not use an aggregator to swap across multiple pools. Therefore, you must configure the pool address for the swap.
Example: Swap DEGEN tokens to ETH

Example: Swap DEGEN tokens to ETH

In the example above, the configuration swaps DEGEN tokens to WETH from the DEGEN/WETH pool on the Base network.

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Configuration fields

Field nameRequired?Detail
Variable to save resultYesThis Processor will output the transaction hash of the swap. You can choose a variable name to store the transaction hash. For example: TX_HASH_SWAP_TOKEN_EVM
Private keyYesThis is the private key of the wallet performing the transaction. Each Profile has a default variable for storing the private key, so you can use the default variable WALLET_PRIVATE_KEY
ChainYesThe blockchain network where you want to perform the swap
Node endpoint groupYesSelect the node provider to interact with the blockchain
Pool addressYesThe address of the pool you want to swap in
Input token addressYesA pool contains two tokens; this is the address of the token you want to deposit into the pool to swap for the other token. For example, if you want to swap DEGEN for ETH (sell DEGEN), enter the address of the DEGEN token here
Output token addressYesThe address of the token you want to receive after the swap. For example, if you want to swap DEGEN for WETH (sell DEGEN), enter the address of the WETH token here. If you prefer to receive the native token instead of WETH, you can select Receive native token after swap (if the output token is a wrapped token). This option applies only to pools with wrapped tokens
Amount of input tokenYeshe number of tokens you want to sell. For example, if you want to sell 1,000 DEGEN for ETH, enter 1000
Slippage tolerance (%)YesMaximum slippage for swaps. For pools with low price volatility, you should set this value low (e.g., 0.3%, 0.5%). For pools with high price volatility over short periods, set a higher value to increase the likelihood of a successful swap
Deadline (second)YesMaximum time allowed to complete the swap transaction. For example, if you enter 10, the transaction will be canceled (reverted) if the swap is not completed within 10 seconds
Max price impact (%)YesMaximum price impact for swaps. For pools with high liquidity, you should set this value low (e.g., 0.3%, 0.5%). For pools with low liquidity, you may choose a higher value
Gas limitNoGas limit for executing the transaction
Gas price (Gwei)NoGas price for executing the transaction. If you do not specify a value, the gas price will default to the current average on the chain. For best results, it is recommended to set the gas price to increase the likelihood of a successful swap transaction
Total number of transactionYesThe minimum value is 1. If you enter a value greater than 1, such as 10, this Processor will broadcast 10 swap transactions simultaneously, each with a different nonce, to increase the likelihood that multiple transactions are mined in the same block
Wait for the transaction to be confirmed?NoIf you enable this option, the Processor will wait for the swap transaction to be confirmed before proceeding to the next Processor. If you leave it unchecked, the Processor will broadcast the swap transaction without waiting for confirmation and immediately move on to the next Processor

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How to select Gas Limit and Gas Price

If you want to speed up transaction mining by competing on gas, or if the Processor cannot estimate the Gas Limit for certain transactions, you can manually specify the Gas Limit and Gas Price for the Processor. For example, if you want to swap the DEGEN/WETH pool, review several recent transactions to see their Gas Limit and Gas Price. This will help you choose appropriate values for the Processor. Using the following transaction as a reference: https://basescan.org/tx/0x968eb4733010e3ee2501904de8dc987b87233726a917c94a8ba5446cea35d87b, you can set the Gas price (Gwei) to 0.2 Gwei and the Gas limit to 176073 for the Processor.
Example of how to choose values for Gas Price (Gwei) and Gas Limit

Example of how to choose values for Gas Price (Gwei) and Gas Limit