post
https://trade-api.gateway.uniswap.org/v1/lp/approve
Checks if the wallet address has the required approvals. If the wallet address does not have the required approval, then the response will include the transactions to approve the tokens. If the wallet address has the required approval, then the response will be empty for the corresponding tokens. If the parameter simulateTransaction is set to true, then the response will include the gas fees for the approval transactions.
Note that approval is required for both creating and removing positions in V2 pools. Approval is only required for creating positions in V3 and V4 pools.