This gist shows a Keep3r autotask that can be used with OpenZeppelin Defender with relayers

!keeper_auto_task_relayer.js

// Settings edited by user
const INFURA_PROJECT_ID = ""
const INFURA_PROJECT_SECRET = ""

// Code starts here
const { ethers } = require("ethers");
const { DefenderRelaySigner } = require('defender-relay-client/lib/ethers');

const UniswapOracleV2 = "UniswapOracleV2";
const HegicPoolKeep3r = "HegicPoolKeep3r";
const YearnV1EarnKeep3r = "YearnV1EarnKeep3r";
const UniswapSlidingWindow = "UniswapSlidingWindow";

const abis = {
    UniswapOracleV2: [{"inputs":[{"internalType":"address","name":"_keep3r","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"KP3R","outputs":[{"internalType":"contract IKeep3rV1","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"address","name":"tokenOut","type":"address"}],"name":"consult","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"governance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"granularity","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"lastUpdated","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"observationIndexOf","outputs":[{"internalType":"uint8","name":"index","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"pairObservations","outputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"uint256","name":"price0Cumulative","type":"uint256"},{"internalType":"uint256","name":"price1Cumulative","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pairs","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingGovernance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"periodSize","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_governance","type":"address"}],"name":"setGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_keep3r","type":"address"}],"name":"setKeep3r","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"update","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"i","type":"uint256"},{"internalType":"uint256","name":"length","type":"uint256"}],"name":"updateFor","outputs":[{"internalType":"bool","name":"updated","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"pair","type":"address"}],"name":"updatePair","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"updateable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"i","type":"uint256"},{"internalType":"uint256","name":"length","type":"uint256"}],"name":"updateableFor","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"updateableList","outputs":[{"internalType":"address[]","name":"list","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"windowSize","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"work","outputs":[],"stateMutability":"nonpayable","type":"function"}],
    HegicPoolKeep3r: [{"inputs":[{"internalType":"address","name":"_keep3r","type":"address"},{"internalType":"address","name":"_hegicPool","type":"address"},{"internalType":"uint256","name":"_minETHRewards","type":"uint256"},{"internalType":"uint256","name":"_minWBTCRewards","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"DustSent","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rewards","type":"uint256"}],"name":"ForcedClaimedRewards","type":"event"},{"anonymous":false,"inputs":[],"name":"GovernorAccepted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"hegicPool","type":"address"}],"name":"HegicPoolSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"keep3r","type":"address"}],"name":"Keep3rSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"eth","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"wbtc","type":"uint256"}],"name":"LotsBought","type":"event"},{"anonymous":false,"inputs":[],"name":"ManagerAccepted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_minETHRewards","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_minWBTCRewards","type":"uint256"}],"name":"MinRewardsSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"pendingGovernor","type":"address"}],"name":"PendingGovernorSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"pendingManager","type":"address"}],"name":"PendingManagerSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"rewards","type":"uint256"}],"name":"RewardsClaimedByKeeper","type":"event"},{"inputs":[],"name":"ETH_ADDRESS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"HegicPool","outputs":[{"internalType":"contract IHegicPoolV2","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptGovernor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"acceptManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_eth","type":"uint256"},{"internalType":"uint256","name":"_wbtc","type":"uint256"}],"name":"buyLots","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"forceClaimRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"governor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"keep3r","outputs":[{"internalType":"contract IKeep3rV1","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minETHRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minWBTCRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingGovernor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"sendDust","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_hegicPool","type":"address"}],"name":"setHegicPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_keep3r","type":"address"}],"name":"setKeep3r","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_minETHRewards","type":"uint256"},{"internalType":"uint256","name":"_minWBTCRewards","type":"uint256"}],"name":"setMinRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_pendingGovernor","type":"address"}],"name":"setPendingGovernor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_pendingManager","type":"address"}],"name":"setPendingManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"workable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}],
    YearnV1EarnKeep3r: [{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"BASE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"KP3R","outputs":[{"internalType":"contract IKeep3rV1","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"THRESHOLD","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IYERC20","name":"_token","type":"address"}],"name":"shouldRebalance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokens","outputs":[{"internalType":"contract IYERC20[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"work","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"workable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}],
    UniswapSlidingWindow: [{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"KP3R","outputs":[{"internalType":"contract IKeep3rV1","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"address","name":"tokenOut","type":"address"}],"name":"current","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"governance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"lastObservation","outputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"uint256","name":"price0Cumulative","type":"uint256"},{"internalType":"uint256","name":"price1Cumulative","type":"uint256"},{"internalType":"uint256","name":"timeElapsed","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"lastUpdated","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"pairObservations","outputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"uint256","name":"price0Cumulative","type":"uint256"},{"internalType":"uint256","name":"price1Cumulative","type":"uint256"},{"internalType":"uint256","name":"timeElapsed","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pairs","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingGovernance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"periodSize","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"address","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"granularity","type":"uint256"}],"name":"quote","outputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_governance","type":"address"}],"name":"setGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"update","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"i","type":"uint256"},{"internalType":"uint256","name":"length","type":"uint256"}],"name":"updateFor","outputs":[{"internalType":"bool","name":"updated","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"pair","type":"address"}],"name":"updatePair","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"work","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"workable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"pair","type":"address"}],"name":"workable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}],
}

class KeeperJob {
    constructor(name, addr, workableFunctionName, workFunctionName) {
        this.name = name;
        this.abi = abis[name];
        this.addr = addr;
        this.workableFunctionName = workableFunctionName;
        this.workFunctionName = workFunctionName;
    }
}

const jobs = [
    new KeeperJob(UniswapSlidingWindow, "0xd20b88Ca8bF84Ca829f7A9Cf0eC64e2bFE91c204", "workable()", "work"),
    new KeeperJob(UniswapOracleV2, "0x127a2975c4E1c75f1ed4757a861bbd42523DB035", "updateable", "work"),
    new KeeperJob(HegicPoolKeep3r, "0x5DDe926b0A31346f2485900C5e64c2577F43F774", "workable", "claimRewards"),
    new KeeperJob(YearnV1EarnKeep3r,"0xe7F4ab593aeC81EcA754Da1B3B7cE0C42a13Ec0C", "workable", "work"),
]

// Entrypoint for the Autotask
exports.handler = async function(credentials) {
  const provider = ethers.getDefaultProvider('mainnet',
  {
     infura: {
      projectId: INFURA_PROJECT_ID,
      projectSecret: INFURA_PROJECT_SECRET,
    },
  });

  const signer = new DefenderRelaySigner(credentials, provider, { speed: 'fastest', from });

  for (var i = 0; i < jobs.length; i++)
  {
    const job = jobs[i];
    const contract = new ethers.Contract(job.addr, job.abi, signer);
    // Run work if needed
    if (await contract[job.workableFunctionName].call()) {
        console.log(job.name + " workable");

        var overrideOptions = {}
        try {
            const estimateGas = await contract.estimateGas[job.workFunctionName];
            const gasLimitCalculated = await estimateGas();

            overrideOptions = {
              gasLimit: gasLimitCalculated * 1.5
            }
        } catch {

        }

        const tx = await contract[job.workFunctionName](overrideOptions);
        console.log(tx.hash);
    } else {
       console.log(job.name + " not workable");
    }
  }
}

LICENSE

Copyright 2020 Jesse Liston

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.