The providers themselves can't keep this straight even within their own ecosystem. Plus everyone is running at a million miles/hour.

For example `Claude code` used to set 2 specific beta headers with some version numbers for their Max subscription to be supported.

Oauth tokens for Max plan is different from how their API keys looked. They kind of look similar, but has specific prefix that these tool pre-validate.

It is barely working at this point even within a single provider