Macaroons Escalated Quickly

Fly.io has implemented a new security token system using Macaroons, a type of bearer token designed to be user-editable and enable JIT-generated least-privilege tokens. The platform uses first-party caveats for straightforward restrictions and third-party caveats for more complex scenarios. This implementation allows users to create their own roles and permissions without involving the platform developers, making it a flexible and efficient security solution.