We have been receiving more and more complaints of merchants seeing their cart crash due to 429 errors, not only on the /cart/add.js and other mutation endpoints, but on the /cart.js endpoint as well. The issue is particularly visible when connecting through a VPN (I have used NordVPN P2P connectio…

429 errors affecting real shoppers have been resolved. The remaining issue is CLI-specific, and we’re still working on a proper fix. Thanks to @bakin11 for sharing a great workaround, which I’d recommend following to get unblocked in the meantime. To keep CLI discussion in one place, I’m going to c…

@mrkaluzny , we have just released a fix for CLI in version 3.92.1.

Has this been fixed for the AJAX API? We’ve been trying to find a workaround for this issue but nothing so far has worked. We’re worried that this is impacting conversion for some sessions since we rely heavily on the AJAX API for a dynamic pop-out cart.

Still hitting those rate limits locally with version 3.92.1 as well as seeing this happening for live stores. This is still ongoing

I’ve updated to @GovRayt /cli latest version and still get blocked after 2-5 page refreshes using localhost. If I use the actual dev Shop it takes longer, but we still see this problem. Nott sure why Shopify decides to spend so much resources on AI tokens, but decided to start blocking cart request…

Been running into these 429 errors this morning while trying to test some cart changes using shopify theme dev. I can add about 3 products to the cart before I get locked out with 429 errors for several minutes. This is really frustrating, I need to add dozens of items to the cart to test the theme …

For anyone still experiencing 429 errors, please DM me or send me an email ( josh.faigan@shopify.com ) with your shopify store domain that you are working with IE ( mystore.myshopify.com ). It will let us check logs to see what is happening. If I can get more information I will be able to chat with our …

Hi guys, When using an Express VPN on our live site and after adding to cart a couple of times getting the 429 response rate limit messages and the cloudflare verification for a simple cart retrieval. Nothing fancy on the cart page just trying to load the cart from a simple add to cart. is there a…

Can we get an update on the progress with this issue?

[image] 429 Too many requests Shopify CLI and Libraries 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 are…

Aggressive bot detection with 429 errors AJAX Cart API

Online Store and Theme Development

Paige-Shopify March 31, 2026, 12:07am 63

Although we had shipped a fix for this in CLI version 3.92.1, thanks for letting us know you’re still encountering issues with it.

Just a heads up that we’re mostly discussing 429 errors with CLI here:

Topic		Replies	Views
429 Too many requests Shopify CLI and Libraries theme-commands , app-dev-on-localhost	42	892	May 22, 2026
CLI > Theme Dev > cart ajax 401 Shopify CLI and Libraries theme-commands	66	1070	May 20, 2026
Bug: 429 page errors are too aggressive Shopify App Store dev-stores	52	1766	May 13, 2026
Your connection needs to be verified before you can proceed Shopify CLI and Libraries theme-commands	32	1040	May 21, 2026
Ajax API aggresive 429 status responses when running theme locally Online Store and Theme Development theme-troubleshootin , ajax-api	2	62	February 18, 2026

Aggressive bot detection with 429 errors AJAX Cart API

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