zkSync Era Batch Sender with Stablecoin Fee Payment

WHAT IT DOES

zkSync Era Batch Sender with Stablecoin Fee Payment is a specialized DeFi tool that enables batch token distributions where the sender contract fee is paid in a stablecoin (USDC, USDT, or DAI) rather than native ETH on the zkSync Era network. Instead of requiring users to hold ETH for the batch sender fee, this tool allows you to pay the fee in a stable asset, making batch distributions more accessible and predictable within zkSync's unique L2 environment. The tool reads your stablecoin balance and allowance, automatically approves the sender contract for the required fee amount, and executes the batched transfer—all in one guided workflow. This is ideal for users who primarily hold stablecoins, DAOs that manage treasury in stable assets, and any scenario where avoiding ETH price volatility for fee payments is desirable. By supporting stablecoin fee payments on zkSync Era's low-cost zk-rollup network, the tool significantly reduces the friction of batch distributions for stablecoin-heavy users while leveraging zkSync's fast finality and low fees.

HOW TO USE

Connect your Web3 wallet to the zkSync Era network. Enter the stablecoin fee token address (USDC, USDT, or DAI) you wish to use for fee payment. Enter the ERC-20 token contract address you wish to distribute. Paste or upload your list of recipients in the format "address, amount" with one entry per line—amounts are in human-readable token units. The tool parses the list and calculates the total tokens to be sent. It automatically checks your stablecoin balance and displays whether you have sufficient stablecoins to cover the fee. Review the sender contract address, fee in native ETH, estimated fee in stablecoin, and contract owner for transparency. Click the send batch button, review the transaction in your wallet, and confirm. The tool checks and approves the stablecoin fee amount (if needed), then executes the batched transfer with the fee paid in stablecoin on zkSync Era.

MECHANISM: STABLECOIN FEE INTEGRATION WITH ZKSYNC ERA BATCH TRANSFER

The tool interacts with a specialized BotGentz sender contract deployed on zkSync Era that supports fee payment in stablecoins via the batchTransferERC20WithFeeToken function. This function accepts the token to send, the fee token address, recipient arrays, amounts, and the fee amount in stablecoin. The tool first reads the fee() function from the sender contract to determine the required fee amount in native ETH. It then reads the user's stablecoin balance and allowance on zkSync Era, automatically approving the sender contract for the exact fee amount if needed. The tool also handles the distribution token approval and balance checks. The batch transfer is atomic—either all recipients receive their tokens and the fee is paid in stablecoin, or the entire transaction reverts. The stablecoin fee is processed in the same transaction as the batch send, eliminating the need for separate fee transactions. The tool supports stablecoins with different decimals (6 for USDC/USDT, 18 for DAI) by dynamically reading the decimals() function from the fee token contract, ensuring compatibility with zkSync Era's asset standards.

WHAT IT CANNOT SEE

This tool reads stablecoin balance and allowance for fee payment on zkSync Era but cannot verify recipient validity, token contract correctness, transfer pausing, blacklisting, or gas fluctuations. It cannot guarantee that all transfers will succeed—if one transfer fails due to a blacklisted address, a contract that rejects the token, or any other reason, the entire batch reverts. It cannot account for zkSync Era-specific gas mechanics (e.g., L1-to-L2 fees, publish cost) or the unique fee model of zkSync's zk-rollup architecture. It cannot verify that the stablecoin fee token is not paused or blacklisted. It cannot ensure that the stablecoin approval is atomic with the batch transfer since they are separate operations (though they execute in the same user flow). It cannot recover if the stablecoin approval succeeds but the batch transfer fails—the user would have already spent gas on approval. It cannot verify that the stablecoin fee amount is accurate or covers the actual gas cost. It cannot guarantee that the stablecoin is pegged to USD.

PLEASE NOTE

This tool works exclusively on EVM-compatible chains and is specifically designed for zkSync Era. It requires the user to have sufficient native ETH for gas on the approval and batch transactions, and sufficient stablecoin balance to cover the fee. The user is solely responsible for verifying the stablecoin fee token address, distribution token address, recipient addresses, and amounts before signing. Always test with a small batch first to confirm the setup is correct. The stablecoin fee is estimated based on the current fee rate—actual fee may vary slightly. The sender contract addresses are hardcoded per chain and are publicly available for verification; no third-party custody is involved; you remain in full control of your wallet and funds at all times. zkSync Era's low transaction costs make this tool particularly cost-effective for large stablecoin-fee distributions.