ZeroDev Presets

ECDSA Validator

To set up a Kernel account using ECDSA for validation (mimicking EOAs):

import { createEcdsaKernelAccountClient } from "@zerodev/presets/zerodev"
import { polygonMumbai } from "viem/chains"

const kernelClient = await createEcdsaKernelAccountClient({
    // required
    chain: polygonMumbai,
    projectId: ZERODEV_PROJECT_ID,
    signer: SIGNER,

    // optional
    provider: "PIMLICO", // defaults to a recommended provider
    index: BigInt(1), // defaults to 0
    paymaster: 'SPONSOR', // defaults to SPONSOR
})

• chain is a Viem chain object
• projectId is a ZeroDev project ID from the ZeroDev dashboard.
• signer is a Viem account.
• (optional) provider can be any provider that ZeroDev supports.
• (optional) index can be any positive integer. Different indexes will yield different accounts.
• (optional) paymaster can be:
  • 'NONE': not using any paymaster (the user pays their own gas).
  • 'SPONSOR' (default): sponsor gas for users according to gas policies.
  • A ERC20 token address: use the specified ERC20 token as gas tokens. See the ERC20 gas token docs for details.

is a boolean flag that determines whether ZeroDev will use the sponsoring paymaster.