Learn how to set up your environment to start implementing FedCM.
You need a secure context (HTTPS or localhost) both on the IdP and RP in Chrome to use the FedCM.
Debug code on Chrome on Android
Set up and run a server locally to debug your FedCM code. You can access this server in Chrome on an Android device connected using a USB cable with port forwarding.
You can use DevTools on desktop to debug Chrome on Android by following the instructions at Remote debug Android devices.
Block third-party cookies on Chrome
You can test how FedCM works without third-party cookies on Chrome before it's actually enforced.
To block third-party cookies, use Incognito
mode, or choose "Block
third-party cookies" in your desktop settings at chrome://settings/cookies or on
mobile by navigating to Settings > Site settings > Cookies.