I have reproduced the issue on the latest CLI version. Yes, I am on the latest version I have searched existing posts and this report is not a duplicate. Yes, this isn’t a duplicate In which of these areas are you experiencing a problem? Theme Expected behavior Cart Items should be added/updated/…

I appreciate the responses. We have identified the root cause and are actively working on a fix. I will update again once that’s shipped. We will likely create a snap build for anyone to test as well.

Good morning everyone, we released a patch for the CLI and the new version is 3.92.1. This should fix the rate limiting issues we’ve been seeing along with the 401 status. If you are still experiencing problems, please let us know and we can take a look.

@Josh-Shopify Still getting 401 errors on 3.92.1 [image] [image] Also getting 502s from cart/add.js

Hey @Nic_Oliver , could I get some verbose logs from you so I can look at some of the requests going out?

Still having the same issues with the 429 getting triggered after a single add to cart action, making the localhost useless.

Are you also on version 3.92.1?

@Josh-Shopify Don’t know if it’s related but I’m still getting a Expired Access Token Error. See Shopify Theme Dev > Access Token Expired

Assuming you were talking to me: Yes :slight_smile:

For anyone experiencing the error, I want to track something else from some of our logs. When you are experiencing the issue, are you using AI sessions through Cursor, claude code etc? If you are, do you experience the same problem when running theme dev outside of it and clicking around to get cart…

Has there been any movement on this yet? I’m still having to fight with this each time. I’m updated to the latest version of CLI 3.93.1 --verbose doesn’t seem to output much, but shows the below items The store shows prices in USD, not the default GBP. When I use the country selector dropdown, i…

CLI > Theme Dev > cart ajax 401

Shopify CLI and Libraries

RomnyCristopher-Phnx May 19, 2026, 10:59pm 70

Any updates on this? I’m experiencing the same issue.

Shopify version
3.94.3

Node Version
22.19.0

POST 401 /cart/add

429 Too many requests

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429 Too many requests Shopify CLI and Libraries theme-commands , app-dev-on-localhost	51	1389	July 7, 2026
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Limit AJAX Cart API Online Store and Theme Development ajax-api , cli-themes	3	116	December 9, 2025
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CLI > Theme Dev > cart ajax 401

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