We’re running E2E tests of our storefront solution using Cypress against a Shopify storefront. The tests essentially add one or more products to the cart and verify that the cart page and checkout page render as expected. The system under test is a combination of a script (App Embed), back-end APIs …

Hi @BartCoppens , thanks for sharing the link to the other thread there. I can’t share specific internal details currently, but I did just want to let you know that we are looking into this with our product team at the moment and the thread there with Kyle would be the best place for further details …

Hey @BartCoppens :waving_hand: , the AJAX cart API has no hard rate limits on the number of requests, but it is still protected against malicious traffic via abuse-prevention measures as you mentioned there. Generally, if requests appear suspicious (high volumes from a single IP), Shopify may respo…

[image] Alan_G: at said, you mentioned the failure rate seems to have become more frequent just as of recently? If you’re able to share a specific date when you noticed this first happening or an X-Reque Hi Alan, see Bug: 429 page errors are too aggressive - #25 by TPA_Admin

E2E tests on storefront result in 429

Online Store and Theme Development

BartCoppens July 21, 2025, 12:14pm 3

Hi Alan, see Bug: 429 page errors are too aggressive - #25 by TPA_Admin

Topic		Replies	Views
Bug: 429 page errors are too aggressive Shopify App Store dev-stores	57	2673	August 4, 2026
Aggressive bot detection with 429 errors AJAX Cart API Online Store and Theme Development ajax-api	112	3815	September 29, 2026
Ajax API aggresive 429 status responses when running theme locally Online Store and Theme Development theme-troubleshootin , ajax-api	2	113	February 18, 2026
Shopify Ajax API returning Cloudflare 403 verification errors Hydrogen and Storefront APIs storefront-api	17	732	June 29, 2026
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E2E tests on storefront result in 429

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