What do I need to setup my own Paymaster?

Question

I am trying to setup my own Paymaster contract to sponsor transaction on behalf of other users but I am really lost on what is the right approach.

Do I have to deploy my own Entrypoint smart contract or can I use the already existing ones in different blockchains?

After deploying the AccountFactory for account abstraction and after deploying the Paymaster pointing to an Entrypoint (assuming it is the correct one): how can I build a simple UserOperation (let's say the transfer of a token) for testing using ethers and hardhat?

Answer 1

you can use the existing Entrypoint contract no need to deploy it again , you can do it if you want to . Here is the userOps object just create your Smart Account from the AccountFactory and pass the function signature in the callData field. [{ callData:"" , callGasLimit: 1000000, initCode: "0x", maxFeePerGas: 1000000016, maxPriorityFeePerGas: 1000000000, nonce: 18446744073709551616, paymasterAndData: "0x", preVerificationGas: 21000, sender: "", //Smart contract wallet address signature:"", signed userOps signature verificationGasLimit: 150000 }]