Build A Gasless NFT Minter

Have you ever wanted to drop an NFT collection where minters pay zero gas, and can even mint without a MetaMask pop-up? With Magmar’s Account-Abstraction toolkit you can do exactly that in a few straightforward steps.

Important This tutorial is for educational purposes only. The final code has not been security-audited. Do not deploy it to main net or use it in production without a professional review.

What You’ll Build

A Next.js application that lets anyone mint, transfer, and burn an ERC-721 on Sepolia without paying gas. Behind the scenes the dApp uses:

• Magmar Smart Accounts – ERC-4337 smart-contract wallets created on-demand for each user.

• Magmar Paymaster – covers all transaction fees.

• MagmarOperation API – bundles the mint / burn / transfer calls into single, sponsor-paid operations.

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Tutorial Road-Map

1. Bootstrap the Front-End Generate a Next.js project with Create Web3 Dapp and wire in wagmi + ethers.

2. Lightweight User Management Add password-less e-mail authentication with Userbase to avoid spinning up your own database.

3. Deploy the NFT Contract Compile and push an ERC-721 to Sepolia. We’ll use Hardhat + @openzeppelin/contracts for a clean, upgrade-ready template.

4. Integrate Magmar SDK for Gasless Actions

   • Instantiate a Magmar Smart Account for each authenticated user.

   • Configure the Magmar Paymaster to sponsor gas.

   • Use sdk.createMagmarOperation() to call mint(), transferFrom() and burn() on the ERC-721 with zero user gas cost.

Each step builds on the previous one, so by the end you’ll have a fully functional, gas-free NFT minter that can be extended to any token or DeFi workflow.

Pre-Requisities

• Node.js version 16.14.0 or higher.

• This project will make use of Create Web3 Dapp, a web3-enabled wrapper of Create Next App.

Please note: Create Web3 Dapp ships out of the box using NextJS 13 which means the project’s main folder is /app instead of /pages.