Sponsor transactions

One of the biggest UX enhancements unlocked by smart accounts is the ability for app developers to sponsor their users' transactions. If your ecosystem has a gas policy enabled, you can start sponsorship your user's transactions by using the policy in your dashboard.

To make these instructions concrete, we have created a sample ecosystem wallet called Rapidfire ID. To interact with it, you can find its SDK in the NPM package directory: @rapidfire/id.

You can check out the GitHub repository for Rapidfire Wallet to learn how to create your own wallet.

Use a policy when injecting your provider#

Sponsor all transactions that will be made with the injected provider.

app.tsx

sdk.ts

import { sdk } from './sdk'
function App() {
  useEffect(() => {
    config.getEthereumProvider({policy: 'pol_...'});
  }, []);
  return (
    <div/>
  )
}

Updating the policy#

Updating your policy is useful if you change chain and need to specify a different policy ID.

app.tsx

sdk.ts

import { sdk } from './sdk'
function App() {
  useEffect(() => {
    config.setPolicy({policy: 'pol_...'});
  }, []);
  return (
    <div/>
  )
}

You can also configure your own app level policy. Check the details in the dashboard section.

Using an external paymaster setup.
Learn how to use erc20 tokens to pay for gas fees.