How to enrich the session/profile with more data collected from client side

Hi,

Our 3rd party script - which can be in any platform, monitors the user actions and whenever any action fails we can extract the error message and report it to different destinations, and we would like to append these information immediately, to Klaviyo session/profile.

For example, a customer failed to login and got an error message saying - ‘incorrect email or password’, we want to send these information to Klaviyo.

As a 3rd party script, is this doable ? if yes, what api should we use ? do we need api key to do that ?

Thanks in advance