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Life & Hobbies

A Bot That Fills a Walmart Cart Like a Human Shopper

With no customer-facing Walmart API, the bot fills a cart through one signed-in tab and checks out only after approval.

Grok Bot

How it works

  1. Because Walmart had no customer-facing API, the author built a Grok Bot that fills a shopping cart like a human shopper and named it Marty.
  2. It shops by actually clicking in a single signed-in browser tab and does not make a payment before the author gives permission.

Results

The author released the bot as a free template. Specific figures such as the number of orders placed were not disclosed.

Notes

The post does not explain how out-of-stock products or substitutions are handled.

Source

X Original post ↗

Example prompt · Grok Bot

Fill the cart at my online grocery store according to my shopping list. Make a payment only after I give permission.

Inputs: store website [e.g., the store normally used], shopping list [products, quantities, preferred brands], budget [maximum amount], and substitution rules [e.g., a different brand of the same size is acceptable]. First check whether you can work in a signed-in session on this website in my browser and whether the website's usage rules impose any restrictions.

Process: 1) Find and add products one by one in a single signed-in tab. 2) If a product is out of stock, show suitable substitutes only as candidates without adding them. 3) After filling the cart, show a summary of each product's price, the total, delivery time, and substitution candidates. 4) Move to checkout if I approve. Do not press the payment button without my explicit permission, and do not remove products that were already in the cart.

Deliverables: a cart summary table and order confirmation details. First add only 3 products and verify that the quantities and options are correct.