Add all the Amex Offers to the card...

amex.js

/**
      You need to already be in https://global.americanexpress.com/offers/eligible route. 
      This script will automatically add all the offers to the card. 
      To Run this script:
      - Login to Amex and go to the above URL.
      - Open 'Inspect Element'
      - Go to Scripts tab and copy this script.
      - Run this script.
*/

let buttons = document.getElementsByClassName('btn offer-cta');

function timeout(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
}

function getNewButtons() {
    let newButtons = document.getElementsByClassName('btn offer-cta');

    let filtered = []

    for (let i = 0; i < newButtons.length; i++) {
        if (newButtons[i].textContent === 'Add to Card') {
            filtered.push(newButtons[i]);
        }
    }

    return filtered;
}

async function begin() {
    for (let i =0; i < buttons.length; i++) {
        if (buttons[i].textContent === 'Add to Card') {
            console.log('clicking ', i)
            buttons[i].click();
            console.log('clicked...')
            await timeout(2000);
            console.log('timeout done')
        }
    }

    buttons = getNewButtons();

    if (buttons.length > 0) {
        console.log("Recursing...")
        await begin();
    }
    
}


begin();