> Is there / why isn't there a solution/API that a website to embed a specific request for authentication that the password manager can pick up, and automatical

> Is there / why isn't there a solution/API that a website to embed a specific request for authentication that the password manager can pick up, and automatically prompt me? If your browser's built-in pw manager/pw manager plugin can't fill the login fields automatically now it's likely because of two things: (a) the site developers deliberately do something to prevent the fields being filled automatically; or (b) the site developers have written an abomination of a login form. In either scenario, it seems highly unlikely that said developers would do whatever work is required to support your hypothetical "login API". I think in the coming years we'll see more sites/services/software supporting https://en.wikipedia.org/wiki/WebAuthn https://en.wikipedia.org/wiki/WebAuthn, but again: if the developers (c|w)ouldn't make a login form that can be auto-filled, I doubt their ability/desire to support WebAuthn.