To get the addon into Eclipse, copy the manifest URL, then on the app go to Settings → Cloud Storage → Add Connection → CLOUD.
After installing, go to Cloud Storage and in the connections section you'll see Vault - Music. Open that and make sure both Tidal and Apple Music are enabled. I recommend using Apple Music as the default music player. Also, Tidal serves as a fallback to AM anyways.
This addon is hosted and run by me and it works similarly to the likes of Monochrome or SpotiFLAC, except I pay and run the accounts directly which cuts latency and makes streams much quicker. Having me maintain it means we don't rely on 3rd party instances, making it a better experience.
These methods have been around for many years and as usual there's an inherent risk to it all, but given its longevity we will keep it going for as long as we can!