I’m trying to find out if there’s a method to send both an NFT and ERC-20 tokens together in a single transaction. Specifically, I’m interested in sending an ERC-1155 or ERC-721 token along with some ERC-20 tokens to a user without executing two separate transactions.
The reason behind this is to avoid paying for two gas fees, which seems inefficient. I’m curious if there’s a custom smart contract solution or a particular technique that permits such simultaneous transfers.
Has anyone done this successfully? If so, could you provide any coding examples or resources to help me understand the implementation better? I want to be aware of any challenges that might arise during these combined transactions.
Oh this is actually a really interesting question! I’ve been wondering the same thing since gas fees have been brutal lately.
From what I understand, you’d need a wrapper contract that handles both transfers in one transaction. The contract would need approval for your NFT and ERC-20 tokens, then execute both transfers in a single function call. But what happens if one transfer succeeds and the other fails? Like if the NFT goes through but the ERC-20 part reverts?
Also, wouldn’t the recipient need to approve your wrapper contract for both token types first? That could complicate the user experience.
Another thing - are you making this wrapper reusable for different token pairs, or just specific tokens? The implementation would vary quite a bit.
I haven’t built something like this myself, but I’m curious what solutions people come up with. Have you looked into existing protocols that handle batch transfers? Maybe a multi-send contract could work?
yeah, i’ve managed to pull this off! just create a simple contract that acts as a middleman. make sure to call transferFrom for both tokens in the same function. just take care of approvals first or itll fail. with gas prices sky high, saving is a huge plus!
Just built this for a marketplace contract. Use a batch transfer function that handles both token types atomically - pass in arrays of token addresses, IDs, amounts, and recipients. Here’s what nobody mentioned: error handling is crucial. If any single transfer fails, revert the entire transaction or you’ll get inconsistent states. Found this out the hard way during testing. For gas optimization, use safeTransferFrom variants and check for zero addresses upfront. The savings vs separate transactions are huge, especially on mainnet. ERC-1155 has built-in batch transfers so it’s cleaner to implement. ERC-721 needs individual transfer loops but you can still keep everything atomic with proper transaction structure.