Find working coupon codes at checkout with ChatGPT agent

Posted

Oct 10, 2025 by Joe V Kolo (@joevkolo)

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Last checked

Oct 16, 2026

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Method:

How we verify

Evidence: Screenshots or logsThe source shows screenshots, a transcript or the agent's output.

Outcome

ChatGPT agent kept trying coupon codes until it found ones that worked; the poster says it saved them $79.

Agent

ChatGPT agent

The source didn't share its exact prompt, so we wrote this from what it describes.

Here's a task I'd like your help with. Read it all the way through before you start.

Goal: Find a coupon code that actually works for my order at this store and apply the best one before I pay.

Check with me first: Which store and cart is this for, and is there a minimum saving that makes it worth it?

What I'll give you:
- The store's website, with my items already in the cart
- My login, if the store needs it (I'll sign in myself)

Rules:
- Look for coupon codes for this store and try them one at a time at checkout.
- Keep going until you find codes that work, then keep the one that saves the most.
- If something is missing or unclear, ask me instead of guessing.
- Don't change the items in the cart or the delivery details.
- Don't place the order. Stop at the final checkout page and hand it back to me.

Output: Which codes you tried, which worked, how much the best one saves, and the cart left ready for me to check out.

You'll know it worked when: the cart shows a lower total with a working code applied, and I just need to press pay.

Here's a task I'd like your help with. Read it all the way through before you start.

Goal: Find and apply the best working coupon for my current cart before I pay.

Quick check first: tell me if anything below is missing or unclear.

Inputs (fill in or confirm):
- Store and cart (items already in it)
- Minimum saving worth applying
- Any loyalty or student discounts
- Store website (cart already filled)

Rules:
- Try codes from reputable sources; record each code and result.
- Stop trying after [N] codes or when one beats [AMOUNT].
- Never sign up for newsletters or accounts to get a code without asking.
- Keep the cart unchanged.
- Check whether codes stack, and whether a code removes another existing discount.
- Prefer codes from the store's own pages, newsletters or official partners.
- Show the final total before and after the best code.

Checkpoint: Stop before payment; I place the order.

If you get stuck: If the store limits code attempts or shows a login, CAPTCHA or two-step code, stop and ask me; never guess or store passwords.

Verify before you finish: Confirm the discount appears in the order total.

Output: Codes tried, results, final total before and after.

Done when: the best working code is applied and visible in the total.

Source

https://x.com/joevkolo/status/1976496831623463109