README.md

Tampermonkey userscripts for automatically adding credit card offers

amex-offers.js

// ==UserScript==
// @name         Add all Amex offers
// @namespace    http://tampermonkey.net/
// @version      2025-03-22
// @description  Read all this code don't trust me. This adds a big button to the offers page.
// @author       Tom MacWright
// @match        https://global.americanexpress.com/offers/eligible
// @icon         https://www.google.com/s2/favicons?sz=64&domain=americanexpress.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function setup() {
        const offers = document.querySelector('section#offers');
        const button = document.createElement('button');
        button.textContent = 'Add all';
        button.onclick = addAll;
        button.style = 'background:magenta;color:white;padding:10px';
        offers.insertBefore(button, offers.firstChild ?? null);
        async function addAll() {
            for (let i = 0; i < 200; i++) {
                const buttons = document.querySelectorAll('button[title="Add to Card"]');
                const first = buttons[0];

                if (first) {
                    button.innerText = 'Clicking button';
                    first.click();
                    await new Promise(resolve => setTimeout(resolve, 1000));

                    const closer = document.querySelector('button[aria-expanded="true"]');
                    if (closer) closer.click();
                } else {
                    button.innerText = 'No buttons found';
                }
            }
        }
    }

    (async () => {
        // Try to set up for 20 seconds.
        for (let i = 0; i < 20; i++) {
            try {
                setup();
                return;
            } catch (e) {
                await new Promise(resolve => setTimeout(resolve, 1000));
            }
        }
    })()
})();

chase-offers.js

// ==UserScript==
// @name         Chase offers
// @namespace    http://tampermonkey.net/
// @version      2024-07-14
// @description  Automatically add chase offers
// @author       tmcw
// @match        https://secure.chase.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=chase.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const urlPattern = /https:\/\/secure\.chase\.com\/web\/auth\/dashboard#\/dashboard\/merchantOffers\/offer-hub\?accountId=.*/;

    const navigateBack = () => {
        window.history.back();
        setTimeout(scanAndClick, Math.random() * 1000 + 300);
    };

    const scanAndClick = () => {
        const btns = [...document.querySelectorAll('[role="button"][data-cy="commerce-tile"]')]
            .filter(b => b.querySelector('[type=ico_add_circle]'));
        const b = btns.pop();
        if (!b) {
            console.log('added all!');
            return;
        }
        b.childNodes[0].click();
        setTimeout(navigateBack, Math.random() * 1000 + 300);
    };

    const waitForElements = () => {
        const observer = new MutationObserver((mutations, observer) => {
            if (document.querySelectorAll('[role="button"][data-cy="commerce-tile"]').length > 0) {
                observer.disconnect();
                scanAndClick();
            }
        });

        observer.observe(document.body, { childList: true, subtree: true });
    };

    const checkUrlAndRun = () => {
        if (urlPattern.test(window.location.href)) {
            waitForElements();
        }
    };

    // Initial check
    checkUrlAndRun();

    // Monitor URL changes
    let oldHref = document.location.href;
    const body = document.querySelector("body");
    const observer = new MutationObserver(mutations => {
        if (oldHref !== document.location.href) {
            oldHref = document.location.href;
            checkUrlAndRun();
        }
    });
    observer.observe(body, { childList: true, subtree: true });

})();

citi.js

// ==UserScript==
// @name         Add all Citi offers
// @namespace    http://tampermonkey.net/
// @version      2025-03-22
// @description  try to take over the world!
// @author       You
// @match        https://online.citi.com/US/ag/products-offers/merchantoffers
// @icon         https://www.google.com/s2/favicons?sz=64&domain=citi.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function setup() {
        const offers = document.querySelector('app-merchant-offer');
        const button = document.createElement('button');
        button.textContent = 'Add all';
        button.onclick = addAll;
        button.style = 'background:magenta;color:white;padding:10px';
        offers.insertBefore(button, offers.firstChild ?? null);
        async function addAll() {
            const loadMoreButtons = [...document.querySelectorAll('button.load-more-button')];
            for (const button of loadMoreButtons) {
                button.click();
                await new Promise(resolve => setTimeout(resolve, 1000));
            }
            for (let i = 0; i < 200; i++) {
                const buttons = [...document.querySelectorAll('button.cds-button')].filter(button => button.textContent === 'Enroll');
                const first = buttons[0];

                if (first) {
                    button.innerText = 'Clicking button';
                    first.click();
                    await new Promise(resolve => setTimeout(resolve, 2000));

                    const closer = document.querySelector('button[aria-label="Close"]');
                    if (closer) closer.click();
                } else {
                    button.innerText = 'No buttons found';
                }
                await new Promise(resolve => setTimeout(resolve, 1000));
            }
        }
    }

    (async () => {
        // Try to set up for 20 seconds.
        for (let i = 0; i < 20; i++) {
            try {
                setup();
                return;
            } catch (e) {
                await new Promise(resolve => setTimeout(resolve, 1000));
            }
        }
    })()
})();