diff --git a/internal/domain/playback.go b/internal/domain/playback.go
index 567e73b..36286f9 100644
--- a/internal/domain/playback.go
+++ b/internal/domain/playback.go
@@ -8,6 +8,7 @@ import (
 type PlaybackService interface {
 	BuildWatchData(ctx context.Context, animeID int, titleCandidates []string, episode string, mode string, userID string) (map[string]any, error)
 	SaveProgress(ctx context.Context, userID string, animeID int64, episode int, timeSeconds float64) error
+	ResolveProxyToken(token string) (string, string, error)
 }
 
 type ProviderStream struct {