ERC20 GAS SPONSORSHIP NOT WORKING

[lawrenceuchenye]

I am trying to allow users sponsor gas in usdc/my community erc20 token but it still keeps using gas from the eth i sent earlier and not usdc

const chain = base;
const ZERODEV_RPC = `https://rpc.zerodev.app/api/v3/${
  import.meta.env.VITE_ZERO_DEV_APP_ID
}/chain/${chain.id}`;

const entryPoint = getEntryPoint("0.7");

const paymasterClient = createZeroDevPaymasterClient({
  chain,
  transport: http(ZERODEV_RPC),
});

const createOrder = async (serviceName: string, approvedAmount: number) => {
  const { kernelClient } = useQuiverStore.getState();
  const data = encodeFunctionData({
    abi: QuiverPayManagerABI,
    functionName: "createOrder",
    args: [approvedAmount, serviceName],
  });

  const userOpHash = await kernelClient.sendUserOperation({
    callData: await kernelClient.account.encodeCalls([
       await getERC20PaymasterApproveCall(paymasterClient, {
        gasToken: TA,
        approveAmount: parseEther("0.0035"),
        entryPoint,
      }),
      {
        to: CA,
        value: BigInt(0),
        data: data,
      },
    ]),
  });

  await kernelClient.waitForUserOperationReceipt({
    hash: userOpHash,
    timeout: 1000 * 15,
  });
};
``

[rnagulapalle]

i am having same issue durng the valdiateops its failing

[jintukumardas]

@lawrenceuchenye @rnagulapalle Maybe you're missing paymasterContext when creating your kernel client. Without paymasterContext: { token: Your USDC/ERC20 token address } at the client level, the paymaster will ignore your ERC20 approval and default to ETH sponsorship.

When you create your kernelClient (in your store or wherever it's initialized), add paymaster and paymasterContext similar to below example or you can refer to this example:

zerodev-examples/pay-gas-with-erc20/main.ts

Line 62 in da7c560

const kernelClient = createKernelAccountClient({