Yes, I think there's no standard yet and nostr:npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z made a nip to save it somewhere else so it's doesn't affect the others clients that don't support this.
You can add the relay to your relay list normally for now if your client doesn't have a separated relay list.
Some clients also doesn't support connections without ssl I still have to find a good way to add support for that
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