reason.js

// This is universal, works with Infura -- set provider accordingly

const ethers = require('ethers')
//const provider = ethers.getDefaultProvider('rinkeby')
const provider = new ethers.providers.JsonRpcProvider(process.env.WEB3_URL)

function hex_to_ascii(str1) {
	var hex  = str1.toString();
	var str = '';
	for (var n = 0; n < hex.length; n += 2) {
		str += String.fromCharCode(parseInt(hex.substr(n, 2), 16));
	}
	return str;
 }

async function reason() {
    var args = process.argv.slice(2)
    let hash = args[0]
    console.log('tx hash:', hash)
    console.log('provider:', process.env.WEB3_URL)

    let tx = await provider.getTransaction(hash)
    if (!tx) {
        console.log('tx not found')
    } else {
        let code = await provider.call(tx, tx.blockNumber)
        let reason = hex_to_ascii(code.substr(138))
        console.log('revert reason:', reason)
    }
}

reason()

revert-reason

#!/bin/bash

# This is for geth

# Fetching revert reason -- https://ethereum.stackexchange.com/questions/48383/how-to-receive-revert-reason-for-past-transactions

if [ -z "$1" ]
then
    echo "Usage: revert-reason <TX_HASH>"
    exit
fi

TX=$1
SCRIPT=" tx = eth.getTransaction( \"$TX\" ); tx.data = tx.input; eth.call(tx, tx.blockNumber)"

geth --exec "$SCRIPT" attach http://localhost:8545 | cut -d '"' -f 2 | cut -c139- | xxd -r -p
echo