Relay
gasless
transactions

Available on all major EVM compatible networks
to supercharge your Web3 UX

> enter app > read the docs

Introduction

How it works

Off chain
On chain

Users sign a message off-chain to interact with your Web3 app. This message gets forwarded to Gelato Relayer via a simple API call
Gelato submits the corresponding transaction to the respective blockchain and pays for the gas

Off chain
On chain

Users sign a message off-chain to interact with your Web3 app.
This message gets forwarded to Gelato Relayer via a simple API call
Gelato submits the corresponding transaction to the respective blockchain and pays for the gas

Easy to integrate

Import the Gelato Relay SDK
into your application

Make your target contract compatible with ERC2771

Solidity

import {
    ERC2771Context
} from "@gelatonetwork/relay-context/contracts/vendor/ERC2771Context.sol";

contract GaslessCounter is ERC2771Context {
    mapping(address => uint256) public counter;

    constructor(address trustedForwarder) ERC2771Context(trustedForwarder) {}
    
    // Target function 🎯
    function increment() external {
        counter[_msgSender()]++;
    }
}

Using Gelato Relay SDK, call your target function gaslessly with user signature authentication

Javascript

import { GelatoRelaySDK } from "@gelatonetwork/relay-sdk";

const counter = "0x...";
const abi = ["function increment()"];
const provider = new ethers.providers.Web3Provider(window.ethereum);
const signer = provider.getSigner();
const user = signer.getAddress();

const contract = new ethers.Contract(counter, abi, signer);
const { payload } = await contract.populateTransaction.increment();

const relayRequest = {
  chainId: provider.network.chainId;
  target: counter;
  data: payload;
  user: user;
};

const apiKey = "stracciatella";

// Get user signature and send relay request to Gelato Relay
const relayResponse =
  await GelatoRelaySDK.relayWithSponsoredCallERC2771(relayRequest, provider, apiKey);

console.log(relayResponse);