I built a small tool for myself and ended up turning it into a product.
As a cofounder and CTO of GeekSeller, we rely on many external APIs. Amazon, Walmart, Shopify, shipping providers, and others. Keeping up with their changes is harder than it should be. Changelogs are scattered, updates are easy to miss, and sometimes things break before you even realize something changed.
I originally built this locally just for my own use. The goal was simple: track API changelogs in one place and get notified about updates.
It worked well, so I kept improving it. Eventually I decided to make it public.
That is how apiPulse.app came out.
It lets you subscribe to APIs you depend on and get notified when something changes, before it becomes a problem.
A big part of the project was built using Codex, OpenAI’s coding agent. This started as a small weekend project, but it is something I now use daily.
If you work with multiple APIs, you probably have the same problem. This is my attempt to solve it in a simple way.
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