Configure your development server to proxy API requests. For example, with Webpack Dev Server or Vite:

The foundation of web security is the Same-Origin Policy. SOP is a critical security mechanism that restricts how a document or script loaded from one origin (domain, protocol, and port) can interact with resources from another origin. It prevents a malicious site from reading private data from a legitimate site (like your banking portal) simply because you have it open in another tab.

After launching Chrome with the flag, open and check:

A more reliable variation used by developers is editing the /etc/hosts file (or C:\Windows\System32\drivers\etc\hosts ).