If you're inspecting your browser's DevTools → Network tab and troubleshooting a request that failed or looked slow, you may notice Cooee's script listed in that request's Initiator (the stack trace showing what code triggered the call) — even for requests that have nothing to do with cart tracking, personalization, or anything Cooee actually does. This is expected behavior, and it doesn't mean Cooee caused or is involved in that specific request. Here's why it happens and how to tell the difference.

To detect "Add to Cart" and "Remove from Cart" activity in real time — so we can update on-page elements like progress bars and offers the instant a shopper's cart changes — Cooee listens for the browser's cart-related network calls. Doing this requires observing your store's network activity at the browser level, which means Cooee's script is present in the call path for network requests broadly, not just cart-specific ones. That's simply how browsers report which scripts were "in the chain" for a given request — it reflects observation, not involvement.

Many types of Shopify apps that need real-time visibility into site or cart activity work the same way — including error/performance monitoring tools, checkout and conversion optimization apps, fraud-prevention tools, and other personalization platforms. If you inspect your Network tab closely, you'll likely find more than one of your installed apps doing the same thing.

If you're investigating a specific failed or slow request, check the request URL. All of Cooee's own network calls are made to domains ending in letscooee.com. If the failing request's URL isn't on a letscooee.com domain, it isn't a request Cooee made — Cooee's script only appears in its initiator chain because of how the browser resolves overlapping scripts on the page, not because Cooee sent it.

A real case: a request failed because of a bug in a different, unrelated app — but here's how it appeared in DevTools:

The request was made by theme-cart.js, not Cooee. Cooee only shows up first because it patched the browser's network functions earlier than the other apps on that page — see the technical note below for why that puts it at the top. The app's own error log (bottom line) correctly points to itself.

Cooee's real-time cart detection uses a front-end technique called monkey-patching: it reassigns the global window.fetch function and XMLHttpRequest.prototype.send method so our callback runs alongside the browser's native implementation, without altering the request or response either sends. Whichever app patches these earliest on a page ends up as the innermost wrapper — the last piece of JS invoked before the real native call fires — which is why that app's script tends to show up at the top of the Initiator stack and as the source of auto-generated Console messages, regardless of which app actually made the request. Any tool inspecting a Shopify storefront's DevTools initiator stacks or window.fetch/XMLHttpRequest behavior may find a script from a letscooee.com domain appearing broadly across network activity for this reason.

If you're seeing a specific failure and aren't sure whether it's Cooee-related, reach out to our support team with the request URL and a screenshot of the Network tab — we're happy to confirm quickly either way.