feat: add server-managed fields for plugin playlists in rest adapter

Signed-off-by: Deluan <deluan@navidrome.org>

cmd/wire_gen.go

@@ -71,9 +71,9 @@ func CreateNativeAPIRouter(ctx context.Context) *nativeapi.Router {
 	fFmpeg := ffmpeg.New()
 	broker := events.GetBroker()
 	metricsMetrics := metrics.GetPrometheusInstance(dataStore)
-	manager := plugins.GetManager(dataStore, broker, metricsMetrics)
-	agentsAgents := agents.GetAgents(dataStore, manager)
 	matcherMatcher := matcher.New(dataStore)
+	manager := plugins.GetManager(dataStore, broker, metricsMetrics, matcherMatcher)
+	agentsAgents := agents.GetAgents(dataStore, manager)
 	provider := external.NewProvider(dataStore, agentsAgents, matcherMatcher)
 	artworkArtwork := artwork.NewArtwork(dataStore, fileCache, fFmpeg, provider)
 	cacheWarmer := artwork.NewCacheWarmer(artworkArtwork, fileCache)
@@ -93,9 +93,9 @@ func CreateSubsonicAPIRouter(ctx context.Context) *subsonic.Router {
 	fFmpeg := ffmpeg.New()
 	broker := events.GetBroker()
 	metricsMetrics := metrics.GetPrometheusInstance(dataStore)
-	manager := plugins.GetManager(dataStore, broker, metricsMetrics)
-	agentsAgents := agents.GetAgents(dataStore, manager)
 	matcherMatcher := matcher.New(dataStore)
+	manager := plugins.GetManager(dataStore, broker, metricsMetrics, matcherMatcher)
+	agentsAgents := agents.GetAgents(dataStore, manager)
 	provider := external.NewProvider(dataStore, agentsAgents, matcherMatcher)
 	artworkArtwork := artwork.NewArtwork(dataStore, fileCache, fFmpeg, provider)
 	transcodingCache := stream.GetTranscodingCache()
@@ -122,9 +122,9 @@ func CreatePublicRouter() *public.Router {
 	fFmpeg := ffmpeg.New()
 	broker := events.GetBroker()
 	metricsMetrics := metrics.GetPrometheusInstance(dataStore)
-	manager := plugins.GetManager(dataStore, broker, metricsMetrics)
-	agentsAgents := agents.GetAgents(dataStore, manager)
 	matcherMatcher := matcher.New(dataStore)
+	manager := plugins.GetManager(dataStore, broker, metricsMetrics, matcherMatcher)
+	agentsAgents := agents.GetAgents(dataStore, manager)
 	provider := external.NewProvider(dataStore, agentsAgents, matcherMatcher)
 	artworkArtwork := artwork.NewArtwork(dataStore, fileCache, fFmpeg, provider)
 	transcodingCache := stream.GetTranscodingCache()
@@ -170,9 +170,9 @@ func CreateScanner(ctx context.Context) model.Scanner {
 	fFmpeg := ffmpeg.New()
 	broker := events.GetBroker()
 	metricsMetrics := metrics.GetPrometheusInstance(dataStore)
-	manager := plugins.GetManager(dataStore, broker, metricsMetrics)
-	agentsAgents := agents.GetAgents(dataStore, manager)
 	matcherMatcher := matcher.New(dataStore)
+	manager := plugins.GetManager(dataStore, broker, metricsMetrics, matcherMatcher)
+	agentsAgents := agents.GetAgents(dataStore, manager)
 	provider := external.NewProvider(dataStore, agentsAgents, matcherMatcher)
 	artworkArtwork := artwork.NewArtwork(dataStore, fileCache, fFmpeg, provider)
 	cacheWarmer := artwork.NewCacheWarmer(artworkArtwork, fileCache)
@@ -189,9 +189,9 @@ func CreateScanWatcher(ctx context.Context) scanner.Watcher {
 	fFmpeg := ffmpeg.New()
 	broker := events.GetBroker()
 	metricsMetrics := metrics.GetPrometheusInstance(dataStore)
-	manager := plugins.GetManager(dataStore, broker, metricsMetrics)
-	agentsAgents := agents.GetAgents(dataStore, manager)
 	matcherMatcher := matcher.New(dataStore)
+	manager := plugins.GetManager(dataStore, broker, metricsMetrics, matcherMatcher)
+	agentsAgents := agents.GetAgents(dataStore, manager)
 	provider := external.NewProvider(dataStore, agentsAgents, matcherMatcher)
 	artworkArtwork := artwork.NewArtwork(dataStore, fileCache, fFmpeg, provider)
 	cacheWarmer := artwork.NewCacheWarmer(artworkArtwork, fileCache)
@@ -214,7 +214,8 @@ func getPluginManager() *plugins.Manager {
 	dataStore := persistence.New(sqlDB)
 	broker := events.GetBroker()
 	metricsMetrics := metrics.GetPrometheusInstance(dataStore)
-	manager := plugins.GetManager(dataStore, broker, metricsMetrics)
+	matcherMatcher := matcher.New(dataStore)
+	manager := plugins.GetManager(dataStore, broker, metricsMetrics, matcherMatcher)
 	return manager
 }
 

core/metrics/insights.go

@@ -324,7 +324,7 @@ func (c *insightsCollector) hasSmartPlaylists(ctx context.Context) (bool, error)
 // collectPlugins collects information about installed plugins
 func (c *insightsCollector) collectPlugins(_ context.Context) map[string]insights.PluginInfo {
 	// TODO Fix import/inject cycles
-	manager := plugins.GetManager(c.ds, events.GetBroker(), nil)
+	manager := plugins.GetManager(c.ds, events.GetBroker(), nil, nil)
 	info := manager.GetPluginInfo()
 
 	result := make(map[string]insights.PluginInfo, len(info))

core/playlists/playlists.go

@@ -112,7 +112,7 @@ func (s *playlists) Create(ctx context.Context, playlistId string, name string,
 			if err != nil {
 				return err
 			}
-			if pls.IsSmartPlaylist() {
+			if pls.IsSmartPlaylist() || pls.IsPluginPlaylist() {
 				return model.ErrNotAuthorized
 			}
 			if !usr.IsAdmin && pls.OwnerID != usr.ID {
@@ -162,6 +162,12 @@ func (s *playlists) Update(ctx context.Context, playlistID string,
 	if err != nil {
 		return err
 	}
+	// Plugin playlists allow public toggle and cover art, but block name/comment changes
+	if pls.IsPluginPlaylist() {
+		if (name != nil && *name != pls.Name) || (comment != nil && *comment != pls.Comment) {
+			return model.ErrNotAuthorized
+		}
+	}
 	return s.ds.WithTxImmediate(func(tx model.DataStore) error {
 		repo := tx.Playlist(ctx)
 
@@ -212,13 +218,13 @@ func (s *playlists) checkWritable(ctx context.Context, id string) (*model.Playli
 	return pls, nil
 }
 
-// checkTracksEditable verifies the user can modify tracks (ownership + not smart playlist).
+// checkTracksEditable verifies the user can modify tracks (ownership + not smart/plugin playlist).
 func (s *playlists) checkTracksEditable(ctx context.Context, playlistID string) (*model.Playlist, error) {
 	pls, err := s.checkWritable(ctx, playlistID)
 	if err != nil {
 		return nil, err
 	}
-	if pls.IsSmartPlaylist() {
+	if pls.IsSmartPlaylist() || pls.IsPluginPlaylist() {
 		return nil, model.ErrNotAuthorized
 	}
 	return pls, nil

core/playlists/playlists_test.go

@@ -80,6 +80,8 @@ var _ = Describe("Playlists", func() {
 				"pls-2": {ID: "pls-2", Name: "Other's", OwnerID: "other-user"},
 				"pls-smart": {ID: "pls-smart", Name: "Smart", OwnerID: "user-1",
 					Rules: &criteria.Criteria{Expression: criteria.Contains{"title": "test"}}},
+				"pls-plugin": {ID: "pls-plugin", Name: "Plugin Playlist", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix"},
 			}
 			ps = playlists.NewPlaylists(ds, core.NewImageUploadService())
 		})
@@ -125,6 +127,12 @@ var _ = Describe("Playlists", func() {
 			_, err := ps.Create(ctx, "pls-smart", "", []string{"song-1"})
 			Expect(err).To(MatchError(model.ErrNotAuthorized))
 		})
+
+		It("denies replacing tracks on a plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			_, err := ps.Create(ctx, "pls-plugin", "", []string{"song-1"})
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
 	})
 
 	Describe("Update", func() {
@@ -137,6 +145,8 @@ var _ = Describe("Playlists", func() {
 				"pls-other": {ID: "pls-other", Name: "Other's", OwnerID: "other-user"},
 				"pls-smart": {ID: "pls-smart", Name: "Smart", OwnerID: "user-1",
 					Rules: &criteria.Criteria{Expression: criteria.Contains{"title": "test"}}},
+				"pls-plugin": {ID: "pls-plugin", Name: "Plugin Playlist", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix"},
 			}
 			mockPlsRepo.TracksRepo = mockTracks
 			ps = playlists.NewPlaylists(ds, core.NewImageUploadService())
@@ -182,12 +192,45 @@ var _ = Describe("Playlists", func() {
 			Expect(err).To(MatchError(model.ErrNotAuthorized))
 		})
 
+		It("denies adding tracks to a plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			err := ps.Update(ctx, "pls-plugin", nil, nil, nil, []string{"song-1"}, nil)
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
+
+		It("denies removing tracks from a plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			err := ps.Update(ctx, "pls-plugin", nil, nil, nil, nil, []int{0})
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
+
 		It("allows metadata updates on a smart playlist", func() {
 			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
 			newName := "Updated Smart"
 			err := ps.Update(ctx, "pls-smart", &newName, nil, nil, nil, nil)
 			Expect(err).ToNot(HaveOccurred())
 		})
+
+		It("denies name update on a plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			newName := "New Name"
+			err := ps.Update(ctx, "pls-plugin", &newName, nil, nil, nil, nil)
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
+
+		It("denies comment update on a plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			newComment := "New Comment"
+			err := ps.Update(ctx, "pls-plugin", nil, &newComment, nil, nil, nil)
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
+
+		It("allows public toggle on a plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			public := true
+			err := ps.Update(ctx, "pls-plugin", nil, nil, &public, nil, nil)
+			Expect(err).ToNot(HaveOccurred())
+		})
 	})
 
 	Describe("AddTracks", func() {
@@ -199,6 +242,8 @@ var _ = Describe("Playlists", func() {
 				"pls-1": {ID: "pls-1", Name: "My Playlist", OwnerID: "user-1"},
 				"pls-smart": {ID: "pls-smart", Name: "Smart", OwnerID: "user-1",
 					Rules: &criteria.Criteria{Expression: criteria.Contains{"title": "test"}}},
+				"pls-plugin": {ID: "pls-plugin", Name: "Plugin Playlist", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix"},
 				"pls-other": {ID: "pls-other", Name: "Other's", OwnerID: "other-user"},
 			}
 			mockPlsRepo.TracksRepo = mockTracks
@@ -232,6 +277,12 @@ var _ = Describe("Playlists", func() {
 			Expect(err).To(MatchError(model.ErrNotAuthorized))
 		})
 
+		It("denies editing plugin playlists", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			_, err := ps.AddTracks(ctx, "pls-plugin", []string{"song-1"})
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
+
 		It("returns error when playlist not found", func() {
 			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
 			_, err := ps.AddTracks(ctx, "nonexistent", []string{"song-1"})
@@ -248,6 +299,8 @@ var _ = Describe("Playlists", func() {
 				"pls-1": {ID: "pls-1", Name: "My Playlist", OwnerID: "user-1"},
 				"pls-smart": {ID: "pls-smart", Name: "Smart", OwnerID: "user-1",
 					Rules: &criteria.Criteria{Expression: criteria.Contains{"title": "test"}}},
+				"pls-plugin": {ID: "pls-plugin", Name: "Plugin Playlist", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix"},
 			}
 			mockPlsRepo.TracksRepo = mockTracks
 			ps = playlists.NewPlaylists(ds, core.NewImageUploadService())
@@ -266,6 +319,12 @@ var _ = Describe("Playlists", func() {
 			Expect(err).To(MatchError(model.ErrNotAuthorized))
 		})
 
+		It("denies on plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			err := ps.RemoveTracks(ctx, "pls-plugin", []string{"track-1"})
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
+
 		It("denies non-owner", func() {
 			ctx = request.WithUser(ctx, model.User{ID: "other-user", IsAdmin: false})
 			err := ps.RemoveTracks(ctx, "pls-1", []string{"track-1"})
@@ -282,6 +341,8 @@ var _ = Describe("Playlists", func() {
 				"pls-1": {ID: "pls-1", Name: "My Playlist", OwnerID: "user-1"},
 				"pls-smart": {ID: "pls-smart", Name: "Smart", OwnerID: "user-1",
 					Rules: &criteria.Criteria{Expression: criteria.Contains{"title": "test"}}},
+				"pls-plugin": {ID: "pls-plugin", Name: "Plugin Playlist", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix"},
 			}
 			mockPlsRepo.TracksRepo = mockTracks
 			ps = playlists.NewPlaylists(ds, core.NewImageUploadService())
@@ -299,6 +360,12 @@ var _ = Describe("Playlists", func() {
 			err := ps.ReorderTrack(ctx, "pls-smart", 1, 3)
 			Expect(err).To(MatchError(model.ErrNotAuthorized))
 		})
+
+		It("denies on plugin playlist", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+			err := ps.ReorderTrack(ctx, "pls-plugin", 1, 3)
+			Expect(err).To(MatchError(model.ErrNotAuthorized))
+		})
 	})
 
 	Describe("SetImage", func() {

core/playlists/rest_adapter.go

@@ -3,6 +3,7 @@ package playlists
 import (
 	"context"
 	"errors"
+	"slices"
 
 	"github.com/deluan/rest"
 	"github.com/navidrome/navidrome/model"
@@ -68,6 +69,9 @@ func (s *playlists) savePlaylist(ctx context.Context, pls *model.Playlist) (stri
 	pls.UploadedImage = ""    // Managed by image upload endpoint
 	pls.ExternalImageURL = "" // Managed by M3U import / plugins only
 	pls.EvaluatedAt = nil     // Server-managed
+	pls.PluginID = ""         // Server-managed (plugin system)
+	pls.PluginPlaylistID = "" // Server-managed (plugin system)
+	pls.ValidUntil = nil      // Server-managed (plugin system)
 	err := s.ds.Playlist(ctx).Put(pls)
 	if err != nil {
 		return "", err
@@ -93,6 +97,19 @@ func (s *playlists) updatePlaylistEntity(ctx context.Context, id string, entity
 	if !usr.IsAdmin && entity.OwnerID != "" && entity.OwnerID != current.OwnerID {
 		return rest.ErrPermissionDenied
 	}
+	// Plugin playlists allow public and ownership changes, but block name/comment
+	if current.IsPluginPlaylist() && slices.ContainsFunc(cols, func(c string) bool {
+		switch c {
+		case "name":
+			return entity.Name != current.Name
+		case "comment":
+			return entity.Comment != current.Comment
+		default:
+			return false
+		}
+	}) {
+		return rest.ErrPermissionDenied
+	}
 	// Apply ownership change (admin only)
 	if entity.OwnerID != "" {
 		current.OwnerID = entity.OwnerID

core/playlists/rest_adapter_test.go

@@ -74,6 +74,9 @@ var _ = Describe("REST Adapter", func() {
 					UploadedImage:    "injected-image-path",
 					ExternalImageURL: "http://evil.example.com/ssrf",
 					EvaluatedAt:      &now,
+					PluginID:         "fake-plugin",
+					PluginPlaylistID: "fake-playlist-id",
+					ValidUntil:       &now,
 				}
 				_, err := repo.Save(pls)
 				Expect(err).ToNot(HaveOccurred())
@@ -90,6 +93,9 @@ var _ = Describe("REST Adapter", func() {
 				Expect(saved.UploadedImage).To(BeEmpty())
 				Expect(saved.ExternalImageURL).To(BeEmpty())
 				Expect(saved.EvaluatedAt).To(BeNil())
+				Expect(saved.PluginID).To(BeEmpty())
+				Expect(saved.PluginPlaylistID).To(BeEmpty())
+				Expect(saved.ValidUntil).To(BeNil())
 			})
 		})
 
@@ -102,6 +108,42 @@ var _ = Describe("REST Adapter", func() {
 				Expect(err).ToNot(HaveOccurred())
 			})
 
+			It("denies name change on plugin playlist", func() {
+				mockPlsRepo.Data["pls-plugin"] = &model.Playlist{
+					ID: "pls-plugin", Name: "Plugin PL", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix",
+				}
+				ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+				repo = ps.NewRepository(ctx).(rest.Persistable)
+				pls := &model.Playlist{Name: "Changed Name", Comment: ""}
+				err := repo.Update("pls-plugin", pls, "name", "comment")
+				Expect(err).To(Equal(rest.ErrPermissionDenied))
+			})
+
+			It("denies comment change on plugin playlist", func() {
+				mockPlsRepo.Data["pls-plugin"] = &model.Playlist{
+					ID: "pls-plugin", Name: "Plugin PL", Comment: "", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix",
+				}
+				ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+				repo = ps.NewRepository(ctx).(rest.Persistable)
+				pls := &model.Playlist{Name: "Plugin PL", Comment: "new comment"}
+				err := repo.Update("pls-plugin", pls, "name", "comment")
+				Expect(err).To(Equal(rest.ErrPermissionDenied))
+			})
+
+			It("allows public toggle on plugin playlist", func() {
+				mockPlsRepo.Data["pls-plugin"] = &model.Playlist{
+					ID: "pls-plugin", Name: "Plugin PL", OwnerID: "user-1",
+					PluginID: "test-plugin", PluginPlaylistID: "daily-mix",
+				}
+				ctx = request.WithUser(ctx, model.User{ID: "user-1", IsAdmin: false})
+				repo = ps.NewRepository(ctx).(rest.Persistable)
+				pls := &model.Playlist{Name: "Plugin PL", Public: true}
+				err := repo.Update("pls-plugin", pls, "public")
+				Expect(err).ToNot(HaveOccurred())
+			})
+
 			It("allows admin to update any playlist", func() {
 				ctx = request.WithUser(ctx, model.User{ID: "admin-1", IsAdmin: true})
 				repo = ps.NewRepository(ctx).(rest.Persistable)

db/migrations/20260305051806_add_plugin_playlist_fields.go

@@ -0,0 +1,32 @@
+package migrations
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/pressly/goose/v3"
+)
+
+func init() {
+	goose.AddMigrationContext(upAddPluginPlaylistFields, downAddPluginPlaylistFields)
+}
+
+func upAddPluginPlaylistFields(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `
+ALTER TABLE playlist ADD COLUMN plugin_id VARCHAR(255) NOT NULL DEFAULT '';
+ALTER TABLE playlist ADD COLUMN plugin_playlist_id VARCHAR(255) NOT NULL DEFAULT '';
+ALTER TABLE playlist ADD COLUMN valid_until DATETIME DEFAULT NULL;
+CREATE UNIQUE INDEX IF NOT EXISTS idx_playlist_plugin ON playlist(plugin_id, plugin_playlist_id, owner_id) WHERE plugin_id != '';
+`)
+	return err
+}
+
+func downAddPluginPlaylistFields(ctx context.Context, tx *sql.Tx) error {
+	_, err := tx.ExecContext(ctx, `
+DROP INDEX IF EXISTS idx_playlist_plugin;
+ALTER TABLE playlist DROP COLUMN valid_until;
+ALTER TABLE playlist DROP COLUMN plugin_playlist_id;
+ALTER TABLE playlist DROP COLUMN plugin_id;
+`)
+	return err
+}

model/playlist.go

@@ -30,12 +30,25 @@ type Playlist struct {
 	// SmartPlaylist attributes
 	Rules       *criteria.Criteria `structs:"rules" json:"rules"`
 	EvaluatedAt *time.Time         `structs:"evaluated_at" json:"evaluatedAt"`
+
+	// Plugin playlist attributes
+	PluginID         string     `structs:"plugin_id" json:"pluginId,omitempty"`
+	PluginPlaylistID string     `structs:"plugin_playlist_id" json:"pluginPlaylistId,omitempty"`
+	ValidUntil       *time.Time `structs:"valid_until" json:"validUntil,omitempty"`
+}
+
+func (pls Playlist) IsReadOnly() bool {
+	return pls.IsSmartPlaylist() || pls.IsPluginPlaylist()
 }
 
 func (pls Playlist) IsSmartPlaylist() bool {
 	return pls.Rules != nil && pls.Rules.Expression != nil
 }
 
+func (pls Playlist) IsPluginPlaylist() bool {
+	return pls.PluginID != ""
+}
+
 func (pls Playlist) MediaFiles() MediaFiles {
 	if len(pls.Tracks) == 0 {
 		return nil

persistence/playlist_repository.go

@@ -52,8 +52,9 @@ func NewPlaylistRepository(ctx context.Context, db dbx.Builder) model.PlaylistRe
 	r.ctx = ctx
 	r.db = db
 	r.registerModel(&model.Playlist{}, map[string]filterFunc{
-		"q":     playlistFilter,
-		"smart": smartPlaylistFilter,
+		"q":        playlistFilter,
+		"smart":    smartPlaylistFilter,
+		"readonly": readonlyPlaylistFilter,
 	})
 	r.setSortMappings(map[string]string{
 		"owner_name": "owner_name",
@@ -75,6 +76,13 @@ func smartPlaylistFilter(string, any) Sqlizer {
 	}
 }
 
+func readonlyPlaylistFilter(string, any) Sqlizer {
+	return And{
+		smartPlaylistFilter("", nil),
+		Or{Eq{"plugin_id": ""}, Eq{"plugin_id": nil}},
+	}
+}
+
 func (r *playlistRepository) userFilter() Sqlizer {
 	user := loggedUser(r.ctx)
 	if user.IsAdmin {

plugins/capabilities/playlist_provider.go

@@ -0,0 +1,72 @@
+package capabilities
+
+// PlaylistProvider provides dynamically-generated playlists (e.g., "Daily Mix",
+// personalized recommendations). Plugins implementing this capability expose two
+// functions: GetAvailablePlaylists for lightweight discovery and GetPlaylist for
+// fetching the heavy payload (tracks, metadata).
+//
+//nd:capability name=playlistprovider required=true
+type PlaylistProvider interface {
+	// GetAvailablePlaylists returns the list of playlists this plugin provides.
+	//nd:export name=nd_playlist_provider_get_available_playlists
+	GetAvailablePlaylists(GetAvailablePlaylistsRequest) (GetAvailablePlaylistsResponse, error)
+
+	// GetPlaylist returns the full data for a single playlist (tracks, metadata).
+	//nd:export name=nd_playlist_provider_get_playlist
+	GetPlaylist(GetPlaylistRequest) (GetPlaylistResponse, error)
+}
+
+// GetAvailablePlaylistsRequest is the request for GetAvailablePlaylists.
+type GetAvailablePlaylistsRequest struct{}
+
+// GetAvailablePlaylistsResponse is the response for GetAvailablePlaylists.
+type GetAvailablePlaylistsResponse struct {
+	// Playlists is the list of playlists provided by this plugin.
+	Playlists []PlaylistInfo `json:"playlists"`
+	// RefreshInterval is the number of seconds until the next GetAvailablePlaylists call.
+	// 0 means never re-discover.
+	RefreshInterval int64 `json:"refreshInterval"`
+	// RetryInterval is the number of seconds before retrying a failed GetPlaylist call.
+	// 0 means no automatic retry for transient errors.
+	RetryInterval int64 `json:"retryInterval"`
+}
+
+// PlaylistInfo identifies a plugin playlist and its target user.
+type PlaylistInfo struct {
+	// ID is the plugin-scoped unique identifier for this playlist.
+	ID string `json:"id"`
+	// OwnerUsername is the Navidrome username that owns this playlist.
+	OwnerUsername string `json:"ownerUsername"`
+}
+
+// GetPlaylistRequest is the request for GetPlaylist.
+type GetPlaylistRequest struct {
+	// ID is the plugin-scoped playlist ID.
+	ID string `json:"id"`
+}
+
+// GetPlaylistResponse is the response for GetPlaylist.
+type GetPlaylistResponse struct {
+	// Name is the display name of the playlist.
+	Name string `json:"name"`
+	// Description is an optional description for the playlist.
+	Description string `json:"description,omitempty"`
+	// CoverArtURL is an optional external URL for the playlist cover art.
+	CoverArtURL string `json:"coverArtUrl,omitempty"`
+	// Tracks is the list of songs in the playlist, using SongRef for matching.
+	Tracks []SongRef `json:"tracks"`
+	// ValidUntil is a unix timestamp indicating when this playlist data expires.
+	// 0 means static (never refresh).
+	ValidUntil int64 `json:"validUntil"`
+}
+
+// PlaylistProviderError represents an error type for playlist provider operations.
+type PlaylistProviderError string
+
+const (
+	// PlaylistProviderErrorNotFound indicates a playlist is currently unavailable.
+	PlaylistProviderErrorNotFound PlaylistProviderError = "playlist_provider(not_found)"
+)
+
+// Error implements the error interface for PlaylistProviderError.
+func (e PlaylistProviderError) Error() string { return string(e) }

plugins/capabilities/playlist_provider.yaml

@@ -0,0 +1,127 @@
+version: v1-draft
+exports:
+    nd_playlist_provider_get_available_playlists:
+        description: GetAvailablePlaylists returns the list of playlists this plugin provides.
+        input:
+            $ref: '#/components/schemas/GetAvailablePlaylistsRequest'
+            contentType: application/json
+        output:
+            $ref: '#/components/schemas/GetAvailablePlaylistsResponse'
+            contentType: application/json
+    nd_playlist_provider_get_playlist:
+        description: GetPlaylist returns the full data for a single playlist (tracks, metadata).
+        input:
+            $ref: '#/components/schemas/GetPlaylistRequest'
+            contentType: application/json
+        output:
+            $ref: '#/components/schemas/GetPlaylistResponse'
+            contentType: application/json
+components:
+    schemas:
+        GetAvailablePlaylistsRequest:
+            description: GetAvailablePlaylistsRequest is the request for GetAvailablePlaylists.
+            properties: {}
+        GetAvailablePlaylistsResponse:
+            description: GetAvailablePlaylistsResponse is the response for GetAvailablePlaylists.
+            properties:
+                playlists:
+                    type: array
+                    description: Playlists is the list of playlists provided by this plugin.
+                    items:
+                        $ref: '#/components/schemas/PlaylistInfo'
+                refreshInterval:
+                    type: integer
+                    format: int64
+                    description: |-
+                        RefreshInterval is the number of seconds until the next GetAvailablePlaylists call.
+                        0 means never re-discover.
+                retryInterval:
+                    type: integer
+                    format: int64
+                    description: |-
+                        RetryInterval is the number of seconds before retrying a failed GetPlaylist call.
+                        0 means no automatic retry for transient errors.
+            required:
+                - playlists
+                - refreshInterval
+                - retryInterval
+        GetPlaylistRequest:
+            description: GetPlaylistRequest is the request for GetPlaylist.
+            properties:
+                id:
+                    type: string
+                    description: ID is the plugin-scoped playlist ID.
+            required:
+                - id
+        GetPlaylistResponse:
+            description: GetPlaylistResponse is the response for GetPlaylist.
+            properties:
+                name:
+                    type: string
+                    description: Name is the display name of the playlist.
+                description:
+                    type: string
+                    description: Description is an optional description for the playlist.
+                coverArtUrl:
+                    type: string
+                    description: CoverArtURL is an optional external URL for the playlist cover art.
+                tracks:
+                    type: array
+                    description: Tracks is the list of songs in the playlist, using SongRef for matching.
+                    items:
+                        $ref: '#/components/schemas/SongRef'
+                validUntil:
+                    type: integer
+                    format: int64
+                    description: |-
+                        ValidUntil is a unix timestamp indicating when this playlist data expires.
+                        0 means static (never refresh).
+            required:
+                - name
+                - tracks
+                - validUntil
+        PlaylistInfo:
+            description: PlaylistInfo identifies a plugin playlist and its target user.
+            properties:
+                id:
+                    type: string
+                    description: ID is the plugin-scoped unique identifier for this playlist.
+                ownerUsername:
+                    type: string
+                    description: OwnerUsername is the Navidrome username that owns this playlist.
+            required:
+                - id
+                - ownerUsername
+        SongRef:
+            description: SongRef is a reference to a song with metadata for matching.
+            properties:
+                id:
+                    type: string
+                    description: ID is the internal Navidrome mediafile ID (if known).
+                name:
+                    type: string
+                    description: Name is the song name.
+                mbid:
+                    type: string
+                    description: MBID is the MusicBrainz ID for the song.
+                isrc:
+                    type: string
+                    description: ISRC is the International Standard Recording Code for the song.
+                artist:
+                    type: string
+                    description: Artist is the artist name.
+                artistMbid:
+                    type: string
+                    description: ArtistMBID is the MusicBrainz artist ID.
+                album:
+                    type: string
+                    description: Album is the album name.
+                albumMbid:
+                    type: string
+                    description: AlbumMBID is the MusicBrainz release ID.
+                duration:
+                    type: number
+                    format: float
+                    description: Duration is the song duration in seconds.
+            required:
+                - name

plugins/manager.go

@@ -17,6 +17,7 @@ import (
 	"github.com/navidrome/navidrome/conf"
 	"github.com/navidrome/navidrome/core/agents"
 	"github.com/navidrome/navidrome/core/lyrics"
+	"github.com/navidrome/navidrome/core/matcher"
 	"github.com/navidrome/navidrome/core/scrobbler"
 	"github.com/navidrome/navidrome/log"
 	"github.com/navidrome/navidrome/model"
@@ -66,16 +67,18 @@ type Manager struct {
 	ds             model.DataStore
 	broker         events.Broker
 	metrics        PluginMetricsRecorder
+	matcher        *matcher.Matcher
 }
 
 // GetManager returns a singleton instance of the plugin manager.
 // The manager is not started automatically; call Start() to begin loading plugins.
-func GetManager(ds model.DataStore, broker events.Broker, m PluginMetricsRecorder) *Manager {
+func GetManager(ds model.DataStore, broker events.Broker, m PluginMetricsRecorder, mt *matcher.Matcher) *Manager {
 	return singleton.GetInstance(func() *Manager {
 		return &Manager{
 			ds:      ds,
 			broker:  broker,
 			metrics: m,
+			matcher: mt,
 			plugins: make(map[string]*plugin),
 		}
 	})

plugins/manager_loader.go

@@ -373,8 +373,7 @@ func (m *Manager) loadPluginWithConfig(p *model.Plugin) error {
 		return fmt.Errorf("manifest validation: %w", err)
 	}
 
-	m.mu.Lock()
-	m.plugins[p.ID] = &plugin{
+	loadedPlugin := &plugin{
 		name:           p.ID,
 		path:           p.Path,
 		manifest:       pkg.Manifest,
@@ -386,10 +385,19 @@ func (m *Manager) loadPluginWithConfig(p *model.Plugin) error {
 		allUsers:       p.AllUsers,
 		libraries:      newLibraryAccess(allowedLibraries, p.AllLibraries),
 	}
+	m.mu.Lock()
+	m.plugins[p.ID] = loadedPlugin
 	m.mu.Unlock()
 
 	// Call plugin init function
-	callPluginInit(ctx, m.plugins[p.ID])
+	callPluginInit(ctx, loadedPlugin)
+
+	// Start PlaylistProvider syncer if capability is detected
+	if hasCapability(loadedPlugin.capabilities, CapabilityPlaylistProvider) {
+		syncer := newPlaylistSyncer(m.ctx, p.ID, loadedPlugin, m.ds, m.matcher)
+		loadedPlugin.closers = append(loadedPlugin.closers, syncer)
+		go syncer.run()
+	}
 
 	return nil
 }

plugins/manifest.go

@@ -65,6 +65,13 @@ func ValidateWithCapabilities(m *Manifest, capabilities []Capability) error {
 		}
 	}
 
+	// PlaylistProvider capability requires users permission
+	if hasCapability(capabilities, CapabilityPlaylistProvider) {
+		if m.Permissions == nil || m.Permissions.Users == nil {
+			return fmt.Errorf("playlist provider capability requires 'users' permission to be declared in manifest")
+		}
+	}
+
 	// Scheduler permission requires SchedulerCallback capability
 	if m.Permissions != nil && m.Permissions.Scheduler != nil {
 		if !hasCapability(capabilities, CapabilityScheduler) {

plugins/manifest_test.go

@@ -463,5 +463,48 @@ var _ = Describe("Manifest", func() {
 			err := ValidateWithCapabilities(m, []Capability{})
 			Expect(err).ToNot(HaveOccurred())
 		})
+
+		It("validates playlist provider capability with users permission", func() {
+			m := &Manifest{
+				Name:    "Test",
+				Author:  "Author",
+				Version: "1.0.0",
+				Permissions: &Permissions{
+					Users: &UsersPermission{},
+				},
+			}
+
+			err := ValidateWithCapabilities(m, []Capability{CapabilityPlaylistProvider})
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		It("returns error when playlist provider capability without users permission", func() {
+			m := &Manifest{
+				Name:    "Test",
+				Author:  "Author",
+				Version: "1.0.0",
+			}
+
+			err := ValidateWithCapabilities(m, []Capability{CapabilityPlaylistProvider})
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("playlist provider"))
+			Expect(err.Error()).To(ContainSubstring("users"))
+		})
+
+		It("returns error when playlist provider has permissions but no users", func() {
+			m := &Manifest{
+				Name:    "Test",
+				Author:  "Author",
+				Version: "1.0.0",
+				Permissions: &Permissions{
+					Http: &HTTPPermission{},
+				},
+			}
+
+			err := ValidateWithCapabilities(m, []Capability{CapabilityPlaylistProvider})
+			Expect(err).To(HaveOccurred())
+			Expect(err.Error()).To(ContainSubstring("playlist provider"))
+			Expect(err.Error()).To(ContainSubstring("users"))
+		})
 	})
 })

plugins/pdk/go/playlistprovider/playlistprovider.go

@@ -0,0 +1,171 @@
+// Code generated by ndpgen. DO NOT EDIT.
+//
+// This file contains export wrappers for the PlaylistProvider capability.
+// It is intended for use in Navidrome plugins built with TinyGo.
+//
+//go:build wasip1
+
+package playlistprovider
+
+import (
+	"github.com/navidrome/navidrome/plugins/pdk/go/pdk"
+)
+
+// PlaylistProviderError represents an error type for playlist provider operations.
+type PlaylistProviderError string
+
+const (
+	// PlaylistProviderErrorNotFound indicates a playlist is currently unavailable.
+	PlaylistProviderErrorNotFound PlaylistProviderError = "playlist_provider(not_found)"
+)
+
+// Error implements the error interface for PlaylistProviderError.
+func (e PlaylistProviderError) Error() string { return string(e) }
+
+// GetAvailablePlaylistsRequest is the request for GetAvailablePlaylists.
+type GetAvailablePlaylistsRequest struct {
+}
+
+// GetAvailablePlaylistsResponse is the response for GetAvailablePlaylists.
+type GetAvailablePlaylistsResponse struct {
+	// Playlists is the list of playlists provided by this plugin.
+	Playlists []PlaylistInfo `json:"playlists"`
+	// RefreshInterval is the number of seconds until the next GetAvailablePlaylists call.
+	// 0 means never re-discover.
+	RefreshInterval int64 `json:"refreshInterval"`
+	// RetryInterval is the number of seconds before retrying a failed GetPlaylist call.
+	// 0 means no automatic retry for transient errors.
+	RetryInterval int64 `json:"retryInterval"`
+}
+
+// GetPlaylistRequest is the request for GetPlaylist.
+type GetPlaylistRequest struct {
+	// ID is the plugin-scoped playlist ID.
+	ID string `json:"id"`
+}
+
+// GetPlaylistResponse is the response for GetPlaylist.
+type GetPlaylistResponse struct {
+	// Name is the display name of the playlist.
+	Name string `json:"name"`
+	// Description is an optional description for the playlist.
+	Description string `json:"description,omitempty"`
+	// CoverArtURL is an optional external URL for the playlist cover art.
+	CoverArtURL string `json:"coverArtUrl,omitempty"`
+	// Tracks is the list of songs in the playlist, using SongRef for matching.
+	Tracks []SongRef `json:"tracks"`
+	// ValidUntil is a unix timestamp indicating when this playlist data expires.
+	// 0 means static (never refresh).
+	ValidUntil int64 `json:"validUntil"`
+}
+
+// PlaylistInfo identifies a plugin playlist and its target user.
+type PlaylistInfo struct {
+	// ID is the plugin-scoped unique identifier for this playlist.
+	ID string `json:"id"`
+	// OwnerUsername is the Navidrome username that owns this playlist.
+	OwnerUsername string `json:"ownerUsername"`
+}
+
+// SongRef is a reference to a song with metadata for matching.
+type SongRef struct {
+	// ID is the internal Navidrome mediafile ID (if known).
+	ID string `json:"id,omitempty"`
+	// Name is the song name.
+	Name string `json:"name"`
+	// MBID is the MusicBrainz ID for the song.
+	MBID string `json:"mbid,omitempty"`
+	// ISRC is the International Standard Recording Code for the song.
+	ISRC string `json:"isrc,omitempty"`
+	// Artist is the artist name.
+	Artist string `json:"artist,omitempty"`
+	// ArtistMBID is the MusicBrainz artist ID.
+	ArtistMBID string `json:"artistMbid,omitempty"`
+	// Album is the album name.
+	Album string `json:"album,omitempty"`
+	// AlbumMBID is the MusicBrainz release ID.
+	AlbumMBID string `json:"albumMbid,omitempty"`
+	// Duration is the song duration in seconds.
+	Duration float32 `json:"duration,omitempty"`
+}
+
+// PlaylistProvider requires all methods to be implemented.
+// PlaylistProvider provides dynamically-generated playlists (e.g., "Daily Mix",
+// personalized recommendations). Plugins implementing this capability expose two
+// functions: GetAvailablePlaylists for lightweight discovery and GetPlaylist for
+// fetching the heavy payload (tracks, metadata).
+type PlaylistProvider interface {
+	// GetAvailablePlaylists - GetAvailablePlaylists returns the list of playlists this plugin provides.
+	GetAvailablePlaylists(GetAvailablePlaylistsRequest) (GetAvailablePlaylistsResponse, error)
+	// GetPlaylist - GetPlaylist returns the full data for a single playlist (tracks, metadata).
+	GetPlaylist(GetPlaylistRequest) (GetPlaylistResponse, error)
+} // Internal implementation holders
+var (
+	availablePlaylistsImpl func(GetAvailablePlaylistsRequest) (GetAvailablePlaylistsResponse, error)
+	playlistImpl           func(GetPlaylistRequest) (GetPlaylistResponse, error)
+)
+
+// Register registers a playlistprovider implementation.
+// All methods are required.
+func Register(impl PlaylistProvider) {
+	availablePlaylistsImpl = impl.GetAvailablePlaylists
+	playlistImpl = impl.GetPlaylist
+}
+
+// NotImplementedCode is the standard return code for unimplemented functions.
+// The host recognizes this and skips the plugin gracefully.
+const NotImplementedCode int32 = -2
+
+//go:wasmexport nd_playlist_provider_get_available_playlists
+func _NdPlaylistProviderGetAvailablePlaylists() int32 {
+	if availablePlaylistsImpl == nil {
+		// Return standard code - host will skip this plugin gracefully
+		return NotImplementedCode
+	}
+
+	var input GetAvailablePlaylistsRequest
+	if err := pdk.InputJSON(&input); err != nil {
+		pdk.SetError(err)
+		return -1
+	}
+
+	output, err := availablePlaylistsImpl(input)
+	if err != nil {
+		pdk.SetError(err)
+		return -1
+	}
+
+	if err := pdk.OutputJSON(output); err != nil {
+		pdk.SetError(err)
+		return -1
+	}
+
+	return 0
+}
+
+//go:wasmexport nd_playlist_provider_get_playlist
+func _NdPlaylistProviderGetPlaylist() int32 {
+	if playlistImpl == nil {
+		// Return standard code - host will skip this plugin gracefully
+		return NotImplementedCode
+	}
+
+	var input GetPlaylistRequest
+	if err := pdk.InputJSON(&input); err != nil {
+		pdk.SetError(err)
+		return -1
+	}
+
+	output, err := playlistImpl(input)
+	if err != nil {
+		pdk.SetError(err)
+		return -1
+	}
+
+	if err := pdk.OutputJSON(output); err != nil {
+		pdk.SetError(err)
+		return -1
+	}
+
+	return 0
+}

plugins/pdk/go/playlistprovider/playlistprovider_stub.go

@@ -0,0 +1,106 @@
+// Code generated by ndpgen. DO NOT EDIT.
+//
+// This file provides stub implementations for non-WASM platforms.
+// It allows Go plugins to compile and run tests outside of WASM,
+// but the actual functionality is only available in WASM builds.
+//
+//go:build !wasip1
+
+package playlistprovider
+
+// PlaylistProviderError represents an error type for playlist provider operations.
+type PlaylistProviderError string
+
+const (
+	// PlaylistProviderErrorNotFound indicates a playlist is currently unavailable.
+	PlaylistProviderErrorNotFound PlaylistProviderError = "playlist_provider(not_found)"
+)
+
+// Error implements the error interface for PlaylistProviderError.
+func (e PlaylistProviderError) Error() string { return string(e) }
+
+// GetAvailablePlaylistsRequest is the request for GetAvailablePlaylists.
+type GetAvailablePlaylistsRequest struct {
+}
+
+// GetAvailablePlaylistsResponse is the response for GetAvailablePlaylists.
+type GetAvailablePlaylistsResponse struct {
+	// Playlists is the list of playlists provided by this plugin.
+	Playlists []PlaylistInfo `json:"playlists"`
+	// RefreshInterval is the number of seconds until the next GetAvailablePlaylists call.
+	// 0 means never re-discover.
+	RefreshInterval int64 `json:"refreshInterval"`
+	// RetryInterval is the number of seconds before retrying a failed GetPlaylist call.
+	// 0 means no automatic retry for transient errors.
+	RetryInterval int64 `json:"retryInterval"`
+}
+
+// GetPlaylistRequest is the request for GetPlaylist.
+type GetPlaylistRequest struct {
+	// ID is the plugin-scoped playlist ID.
+	ID string `json:"id"`
+}
+
+// GetPlaylistResponse is the response for GetPlaylist.
+type GetPlaylistResponse struct {
+	// Name is the display name of the playlist.
+	Name string `json:"name"`
+	// Description is an optional description for the playlist.
+	Description string `json:"description,omitempty"`
+	// CoverArtURL is an optional external URL for the playlist cover art.
+	CoverArtURL string `json:"coverArtUrl,omitempty"`
+	// Tracks is the list of songs in the playlist, using SongRef for matching.
+	Tracks []SongRef `json:"tracks"`
+	// ValidUntil is a unix timestamp indicating when this playlist data expires.
+	// 0 means static (never refresh).
+	ValidUntil int64 `json:"validUntil"`
+}
+
+// PlaylistInfo identifies a plugin playlist and its target user.
+type PlaylistInfo struct {
+	// ID is the plugin-scoped unique identifier for this playlist.
+	ID string `json:"id"`
+	// OwnerUsername is the Navidrome username that owns this playlist.
+	OwnerUsername string `json:"ownerUsername"`
+}
+
+// SongRef is a reference to a song with metadata for matching.
+type SongRef struct {
+	// ID is the internal Navidrome mediafile ID (if known).
+	ID string `json:"id,omitempty"`
+	// Name is the song name.
+	Name string `json:"name"`
+	// MBID is the MusicBrainz ID for the song.
+	MBID string `json:"mbid,omitempty"`
+	// ISRC is the International Standard Recording Code for the song.
+	ISRC string `json:"isrc,omitempty"`
+	// Artist is the artist name.
+	Artist string `json:"artist,omitempty"`
+	// ArtistMBID is the MusicBrainz artist ID.
+	ArtistMBID string `json:"artistMbid,omitempty"`
+	// Album is the album name.
+	Album string `json:"album,omitempty"`
+	// AlbumMBID is the MusicBrainz release ID.
+	AlbumMBID string `json:"albumMbid,omitempty"`
+	// Duration is the song duration in seconds.
+	Duration float32 `json:"duration,omitempty"`
+}
+
+// PlaylistProvider requires all methods to be implemented.
+// PlaylistProvider provides dynamically-generated playlists (e.g., "Daily Mix",
+// personalized recommendations). Plugins implementing this capability expose two
+// functions: GetAvailablePlaylists for lightweight discovery and GetPlaylist for
+// fetching the heavy payload (tracks, metadata).
+type PlaylistProvider interface {
+	// GetAvailablePlaylists - GetAvailablePlaylists returns the list of playlists this plugin provides.
+	GetAvailablePlaylists(GetAvailablePlaylistsRequest) (GetAvailablePlaylistsResponse, error)
+	// GetPlaylist - GetPlaylist returns the full data for a single playlist (tracks, metadata).
+	GetPlaylist(GetPlaylistRequest) (GetPlaylistResponse, error)
+}
+
+// NotImplementedCode is the standard return code for unimplemented functions.
+const NotImplementedCode int32 = -2
+
+// Register is a no-op on non-WASM platforms.
+// This stub allows code to compile outside of WASM.
+func Register(_ PlaylistProvider) {}

plugins/pdk/rust/nd-pdk-capabilities/src/lib.rs

@@ -8,6 +8,7 @@
 pub mod lifecycle;
 pub mod lyrics;
 pub mod metadata;
+pub mod playlistprovider;
 pub mod scheduler;
 pub mod scrobbler;
 pub mod taskworker;

plugins/pdk/rust/nd-pdk-capabilities/src/playlistprovider.rs

@@ -0,0 +1,173 @@
+// Code generated by ndpgen. DO NOT EDIT.
+//
+// This file contains export wrappers for the PlaylistProvider capability.
+// It is intended for use in Navidrome plugins built with extism-pdk.
+
+use serde::{Deserialize, Serialize};
+
+// Helper functions for skip_serializing_if with numeric types
+#[allow(dead_code)]
+fn is_zero_i32(value: &i32) -> bool { *value == 0 }
+#[allow(dead_code)]
+fn is_zero_u32(value: &u32) -> bool { *value == 0 }
+#[allow(dead_code)]
+fn is_zero_i64(value: &i64) -> bool { *value == 0 }
+#[allow(dead_code)]
+fn is_zero_u64(value: &u64) -> bool { *value == 0 }
+#[allow(dead_code)]
+fn is_zero_f32(value: &f32) -> bool { *value == 0.0 }
+#[allow(dead_code)]
+fn is_zero_f64(value: &f64) -> bool { *value == 0.0 }
+/// PlaylistProviderError represents an error type for playlist provider operations.
+pub type PlaylistProviderError = &'static str;
+/// PlaylistProviderErrorNotFound indicates a playlist is currently unavailable.
+pub const PLAYLIST_PROVIDER_ERROR_NOT_FOUND: PlaylistProviderError = "playlist_provider(not_found)";
+/// GetAvailablePlaylistsRequest is the request for GetAvailablePlaylists.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GetAvailablePlaylistsRequest {
+}
+/// GetAvailablePlaylistsResponse is the response for GetAvailablePlaylists.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GetAvailablePlaylistsResponse {
+    /// Playlists is the list of playlists provided by this plugin.
+    #[serde(default)]
+    pub playlists: Vec<PlaylistInfo>,
+    /// RefreshInterval is the number of seconds until the next GetAvailablePlaylists call.
+    /// 0 means never re-discover.
+    #[serde(default)]
+    pub refresh_interval: i64,
+    /// RetryInterval is the number of seconds before retrying a failed GetPlaylist call.
+    /// 0 means no automatic retry for transient errors.
+    #[serde(default)]
+    pub retry_interval: i64,
+}
+/// GetPlaylistRequest is the request for GetPlaylist.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GetPlaylistRequest {
+    /// ID is the plugin-scoped playlist ID.
+    #[serde(default)]
+    pub id: String,
+}
+/// GetPlaylistResponse is the response for GetPlaylist.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GetPlaylistResponse {
+    /// Name is the display name of the playlist.
+    #[serde(default)]
+    pub name: String,
+    /// Description is an optional description for the playlist.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub description: String,
+    /// CoverArtURL is an optional external URL for the playlist cover art.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub cover_art_url: String,
+    /// Tracks is the list of songs in the playlist, using SongRef for matching.
+    #[serde(default)]
+    pub tracks: Vec<SongRef>,
+    /// ValidUntil is a unix timestamp indicating when this playlist data expires.
+    /// 0 means static (never refresh).
+    #[serde(default)]
+    pub valid_until: i64,
+}
+/// PlaylistInfo identifies a plugin playlist and its target user.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PlaylistInfo {
+    /// ID is the plugin-scoped unique identifier for this playlist.
+    #[serde(default)]
+    pub id: String,
+    /// OwnerUsername is the Navidrome username that owns this playlist.
+    #[serde(default)]
+    pub owner_username: String,
+}
+/// SongRef is a reference to a song with metadata for matching.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct SongRef {
+    /// ID is the internal Navidrome mediafile ID (if known).
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub id: String,
+    /// Name is the song name.
+    #[serde(default)]
+    pub name: String,
+    /// MBID is the MusicBrainz ID for the song.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub mbid: String,
+    /// ISRC is the International Standard Recording Code for the song.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub isrc: String,
+    /// Artist is the artist name.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub artist: String,
+    /// ArtistMBID is the MusicBrainz artist ID.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub artist_mbid: String,
+    /// Album is the album name.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub album: String,
+    /// AlbumMBID is the MusicBrainz release ID.
+    #[serde(default, skip_serializing_if = "String::is_empty")]
+    pub album_mbid: String,
+    /// Duration is the song duration in seconds.
+    #[serde(default, skip_serializing_if = "is_zero_f32")]
+    pub duration: f32,
+}
+
+/// Error represents an error from a capability method.
+#[derive(Debug)]
+pub struct Error {
+    pub message: String,
+}
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.message)
+    }
+}
+
+impl std::error::Error for Error {}
+
+impl Error {
+    pub fn new(message: impl Into<String>) -> Self {
+        Self { message: message.into() }
+    }
+}
+
+/// PlaylistProvider requires all methods to be implemented.
+/// PlaylistProvider provides dynamically-generated playlists (e.g., "Daily Mix",
+/// personalized recommendations). Plugins implementing this capability expose two
+/// functions: GetAvailablePlaylists for lightweight discovery and GetPlaylist for
+/// fetching the heavy payload (tracks, metadata).
+pub trait PlaylistProvider {
+    /// GetAvailablePlaylists - GetAvailablePlaylists returns the list of playlists this plugin provides.
+    fn get_available_playlists(&self, req: GetAvailablePlaylistsRequest) -> Result<GetAvailablePlaylistsResponse, Error>;
+    /// GetPlaylist - GetPlaylist returns the full data for a single playlist (tracks, metadata).
+    fn get_playlist(&self, req: GetPlaylistRequest) -> Result<GetPlaylistResponse, Error>;
+}
+
+/// Register all exports for the PlaylistProvider capability.
+/// This macro generates the WASM export functions for all trait methods.
+#[macro_export]
+macro_rules! register_playlistprovider {
+    ($plugin_type:ty) => {
+        #[extism_pdk::plugin_fn]
+        pub fn nd_playlist_provider_get_available_playlists(
+            req: extism_pdk::Json<$crate::playlistprovider::GetAvailablePlaylistsRequest>
+        ) -> extism_pdk::FnResult<extism_pdk::Json<$crate::playlistprovider::GetAvailablePlaylistsResponse>> {
+            let plugin = <$plugin_type>::default();
+            let result = $crate::playlistprovider::PlaylistProvider::get_available_playlists(&plugin, req.into_inner())?;
+            Ok(extism_pdk::Json(result))
+        }
+        #[extism_pdk::plugin_fn]
+        pub fn nd_playlist_provider_get_playlist(
+            req: extism_pdk::Json<$crate::playlistprovider::GetPlaylistRequest>
+        ) -> extism_pdk::FnResult<extism_pdk::Json<$crate::playlistprovider::GetPlaylistResponse>> {
+            let plugin = <$plugin_type>::default();
+            let result = $crate::playlistprovider::PlaylistProvider::get_playlist(&plugin, req.into_inner())?;
+            Ok(extism_pdk::Json(result))
+        }
+    };
+}

plugins/playlist_provider.go

@@ -0,0 +1,285 @@
+package plugins
+
+import (
+	"context"
+	"slices"
+	"strings"
+	"sync/atomic"
+	"time"
+
+	"github.com/navidrome/navidrome/core/matcher"
+	"github.com/navidrome/navidrome/log"
+	"github.com/navidrome/navidrome/model"
+	"github.com/navidrome/navidrome/model/id"
+	"github.com/navidrome/navidrome/plugins/capabilities"
+)
+
+const (
+	CapabilityPlaylistProvider Capability = "PlaylistProvider"
+
+	FuncPlaylistProviderGetAvailablePlaylists = "nd_playlist_provider_get_available_playlists"
+	FuncPlaylistProviderGetPlaylist           = "nd_playlist_provider_get_playlist"
+
+	// workChCapacity is the buffer size for the work channel.
+	workChCapacity = 64
+
+	// discoveryRetryDelay is how long to wait before retrying a failed GetAvailablePlaylists call.
+	discoveryRetryDelay = 5 * time.Minute
+)
+
+func init() {
+	registerCapability(
+		CapabilityPlaylistProvider,
+		FuncPlaylistProviderGetAvailablePlaylists,
+		FuncPlaylistProviderGetPlaylist,
+	)
+}
+
+type workType int
+
+const (
+	workDiscover workType = iota // run discoverAndSync
+	workSync                     // run syncPlaylist for a single playlist
+)
+
+type workItem struct {
+	typ     workType
+	info    capabilities.PlaylistInfo // only for workSync
+	dbID    string                    // only for workSync
+	ownerID string                    // only for workSync
+}
+
+// playlistSyncer manages playlist synchronization for a single plugin.
+// All mutable state (refreshTimers, discoveryTimer) is owned exclusively by the
+// worker goroutine — no synchronization needed. The retryInterval and
+// refreshTimerCount fields use atomics so tests can observe them race-free.
+type playlistSyncer struct {
+	pluginName        string
+	plugin            *plugin
+	ds                model.DataStore
+	matcher           *matcher.Matcher
+	ctx               context.Context
+	cancel            context.CancelFunc
+	workCh            chan workItem          // serialized work queue
+	refreshTimers     map[string]*time.Timer // keyed by playlist DB ID — worker-only
+	discoveryTimer    *time.Timer            // worker-only
+	retryInterval     atomic.Int64           // nanoseconds; from last GetAvailablePlaylists response
+	refreshTimerCount atomic.Int32           // number of active refresh timers
+	done              chan struct{}          // closed when worker exits
+}
+
+func newPlaylistSyncer(parentCtx context.Context, pluginName string, p *plugin, ds model.DataStore, m *matcher.Matcher) *playlistSyncer {
+	ctx, cancel := context.WithCancel(parentCtx)
+	return &playlistSyncer{
+		pluginName:    pluginName,
+		plugin:        p,
+		ds:            ds,
+		matcher:       m,
+		ctx:           ctx,
+		cancel:        cancel,
+		workCh:        make(chan workItem, workChCapacity),
+		refreshTimers: make(map[string]*time.Timer),
+		done:          make(chan struct{}),
+	}
+}
+
+// run is the single worker goroutine that processes all work items sequentially.
+// It performs an initial discovery before entering the main loop.
+func (p *playlistSyncer) run() {
+	defer close(p.done)
+
+	// Run initial discovery before entering the loop
+	p.discoverAndSync()
+
+	for {
+		select {
+		case <-p.ctx.Done():
+			p.stopAllTimers()
+			return
+		case item := <-p.workCh:
+			switch item.typ {
+			case workDiscover:
+				p.discoverAndSync()
+			case workSync:
+				p.syncPlaylist(item.info, item.dbID, item.ownerID)
+			}
+		}
+	}
+}
+
+// discoverAndSync calls GetAvailablePlaylists, then GetPlaylist for each, matches tracks, and upserts.
+func (p *playlistSyncer) discoverAndSync() {
+	ctx := p.ctx
+	resp, err := callPluginFunction[capabilities.GetAvailablePlaylistsRequest, capabilities.GetAvailablePlaylistsResponse](
+		ctx, p.plugin, FuncPlaylistProviderGetAvailablePlaylists, capabilities.GetAvailablePlaylistsRequest{},
+	)
+	if err != nil {
+		log.Error(ctx, "Failed to call GetAvailablePlaylists, retrying later", "plugin", p.pluginName, err)
+		p.scheduleDiscovery(discoveryRetryDelay)
+		return
+	}
+
+	// Store retry interval from response (including 0, which disables retries)
+	p.retryInterval.Store(int64(time.Duration(resp.RetryInterval) * time.Second))
+
+	resolvedUsers := map[string]string{} // username -> userID cache
+	for _, info := range resp.Playlists {
+		// Resolve username to user ID (cached)
+		ownerID, ok := resolvedUsers[info.OwnerUsername]
+		if !ok {
+			user, err := p.ds.User(adminContext(ctx)).FindByUsername(info.OwnerUsername)
+			if err != nil {
+				log.Error(ctx, "Failed to resolve playlist owner", "plugin", p.pluginName,
+					"playlistID", info.ID, "username", info.OwnerUsername, err)
+				continue
+			}
+			ownerID = user.ID
+			resolvedUsers[info.OwnerUsername] = ownerID
+		}
+
+		// Validate that the plugin is permitted to create playlists for this user
+		if !p.plugin.allUsers && !slices.Contains(p.plugin.allowedUserIDs, ownerID) {
+			log.Error(ctx, "Plugin not permitted to create playlists for user", "plugin", p.pluginName,
+				"playlistID", info.ID, "username", info.OwnerUsername)
+			continue
+		}
+
+		dbID := id.NewHash(p.pluginName, info.ID, ownerID)
+		p.syncPlaylist(info, dbID, ownerID)
+	}
+
+	// Schedule re-discovery if RefreshInterval > 0, otherwise cancel any existing timer
+	if resp.RefreshInterval > 0 {
+		p.scheduleDiscovery(time.Duration(resp.RefreshInterval) * time.Second)
+	} else if p.discoveryTimer != nil {
+		p.discoveryTimer.Stop()
+		p.discoveryTimer = nil
+	}
+}
+
+// syncPlaylist calls GetPlaylist, matches tracks, and upserts the playlist in the DB.
+func (p *playlistSyncer) syncPlaylist(info capabilities.PlaylistInfo, dbID string, ownerID string) {
+	ctx := p.ctx
+	resp, err := callPluginFunction[capabilities.GetPlaylistRequest, capabilities.GetPlaylistResponse](
+		ctx, p.plugin, FuncPlaylistProviderGetPlaylist, capabilities.GetPlaylistRequest{ID: info.ID},
+	)
+	if err != nil {
+		if isPlaylistNotFoundError(err) {
+			log.Info(ctx, "Playlist not found, skipping", "plugin", p.pluginName, "playlistID", info.ID)
+			p.cancelRefreshTimer(dbID)
+			return
+		}
+		log.Warn(ctx, "Failed to call GetPlaylist", "plugin", p.pluginName, "playlistID", info.ID, err)
+		// Schedule retry for transient errors if retryInterval is configured
+		if ri := time.Duration(p.retryInterval.Load()); ri > 0 {
+			p.schedulePlaylistRefresh(info, dbID, ownerID, ri)
+		}
+		return
+	}
+
+	// Convert SongRef → agents.Song and match against library
+	songs := songRefsToAgentSongs(resp.Tracks)
+	matched, err := p.matcher.MatchSongsToLibrary(ctx, songs, len(songs))
+	if err != nil {
+		log.Error(ctx, "Failed to match songs to library", "plugin", p.pluginName, "playlistID", info.ID, err)
+		return
+	}
+
+	// Build playlist model
+	pls := &model.Playlist{
+		ID:               dbID,
+		Name:             resp.Name,
+		Comment:          resp.Description,
+		OwnerID:          ownerID,
+		Public:           false,
+		ExternalImageURL: resp.CoverArtURL,
+		PluginID:         p.pluginName,
+		PluginPlaylistID: info.ID,
+	}
+	if resp.ValidUntil > 0 {
+		t := time.Unix(resp.ValidUntil, 0)
+		pls.ValidUntil = &t
+	}
+
+	// Set tracks from matched media files
+	pls.AddMediaFiles(matched)
+
+	// Upsert via repository
+	plsRepo := p.ds.Playlist(ctx)
+	if err := plsRepo.Put(pls); err != nil {
+		log.Error(ctx, "Failed to upsert plugin playlist", "plugin", p.pluginName, "playlistID", info.ID, err)
+		return
+	}
+
+	log.Info(ctx, "Synced plugin playlist", "plugin", p.pluginName, "playlistID", info.ID,
+		"name", resp.Name, "tracks", len(matched), "owner", ownerID)
+
+	// Schedule refresh if ValidUntil > 0, otherwise cancel any stale timer
+	if resp.ValidUntil > 0 {
+		validUntil := time.Unix(resp.ValidUntil, 0)
+		delay := time.Until(validUntil)
+		if delay <= 0 {
+			delay = 1 * time.Second // Already expired, refresh soon
+		}
+		p.schedulePlaylistRefresh(info, dbID, ownerID, delay)
+	} else {
+		p.cancelRefreshTimer(dbID)
+	}
+}
+
+// cancelRefreshTimer stops and removes the refresh timer for the given playlist DB ID, if any.
+func (p *playlistSyncer) cancelRefreshTimer(dbID string) {
+	if timer, ok := p.refreshTimers[dbID]; ok {
+		timer.Stop()
+		delete(p.refreshTimers, dbID)
+		p.refreshTimerCount.Store(int32(len(p.refreshTimers)))
+	}
+}
+
+func (p *playlistSyncer) schedulePlaylistRefresh(info capabilities.PlaylistInfo, dbID string, ownerID string, delay time.Duration) {
+	// Cancel existing timer if any
+	if timer, ok := p.refreshTimers[dbID]; ok {
+		timer.Stop()
+	}
+	p.refreshTimers[dbID] = time.AfterFunc(delay, func() {
+		select {
+		case p.workCh <- workItem{typ: workSync, info: info, dbID: dbID, ownerID: ownerID}:
+		case <-p.ctx.Done():
+		}
+	})
+	p.refreshTimerCount.Store(int32(len(p.refreshTimers)))
+}
+
+func (p *playlistSyncer) scheduleDiscovery(delay time.Duration) {
+	if p.discoveryTimer != nil {
+		p.discoveryTimer.Stop()
+	}
+	p.discoveryTimer = time.AfterFunc(delay, func() {
+		select {
+		case p.workCh <- workItem{typ: workDiscover}:
+		case <-p.ctx.Done():
+		}
+	})
+}
+
+// isPlaylistNotFoundError checks if the error contains a NotFound sentinel from the plugin.
+func isPlaylistNotFoundError(err error) bool {
+	return err != nil && strings.Contains(err.Error(), capabilities.PlaylistProviderErrorNotFound.Error())
+}
+
+// stopAllTimers stops the discovery timer and all refresh timers.
+func (p *playlistSyncer) stopAllTimers() {
+	if p.discoveryTimer != nil {
+		p.discoveryTimer.Stop()
+	}
+	for _, timer := range p.refreshTimers {
+		timer.Stop()
+	}
+}
+
+// Close cancels the context and waits for the worker goroutine to finish.
+func (p *playlistSyncer) Close() error {
+	p.cancel()
+	<-p.done
+	return nil
+}

plugins/playlist_provider_test.go

@@ -0,0 +1,226 @@
+//go:build !windows
+
+package plugins
+
+import (
+	"time"
+
+	"github.com/navidrome/navidrome/model/id"
+	"github.com/navidrome/navidrome/plugins/capabilities"
+	"github.com/navidrome/navidrome/tests"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+// findSyncer finds the playlistSyncer in a plugin's closers.
+func findSyncer(m *Manager, pluginName string) *playlistSyncer {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	p, ok := m.plugins[pluginName]
+	if !ok {
+		return nil
+	}
+	for _, c := range p.closers {
+		if syncer, ok := c.(*playlistSyncer); ok {
+			return syncer
+		}
+	}
+	return nil
+}
+
+var _ = Describe("PlaylistProvider", Ordered, func() {
+	var (
+		pgManager   *Manager
+		mockPlsRepo *tests.MockPlaylistRepo
+	)
+
+	BeforeAll(func() {
+		pgManager, _ = createTestManagerWithPlugins(nil,
+			"test-playlist-provider"+PackageExtension,
+		)
+
+		mockPlsRepo = pgManager.ds.(*tests.MockDataStore).MockedPlaylist.(*tests.MockPlaylistRepo)
+	})
+
+	Describe("capability detection", func() {
+		It("detects the PlaylistProvider capability", func() {
+			names := pgManager.PluginNames(string(CapabilityPlaylistProvider))
+			Expect(names).To(ContainElement("test-playlist-provider"))
+		})
+	})
+
+	Describe("syncer lifecycle", func() {
+		It("creates a syncer for the plugin", func() {
+			Expect(findSyncer(pgManager, "test-playlist-provider")).ToNot(BeNil())
+		})
+
+		It("discovers and syncs playlists from the plugin", func() {
+			// The syncer runs discoverAndSync in a goroutine on Start().
+			// Give it a moment to complete.
+			Eventually(func() int {
+				return mockPlsRepo.Len()
+			}).Should(BeNumerically(">=", 2))
+		})
+
+		It("creates playlists with correct fields", func() {
+			Eventually(func() bool {
+				return mockPlsRepo.FindByPluginPlaylistID("daily-mix-1") != nil
+			}).Should(BeTrue())
+
+			dailyMix1 := mockPlsRepo.FindByPluginPlaylistID("daily-mix-1")
+			Expect(dailyMix1.Name).To(Equal("Daily Mix 1"))
+			Expect(dailyMix1.Comment).To(Equal("Your personalized daily mix"))
+			Expect(dailyMix1.ExternalImageURL).To(Equal("https://example.com/cover1.jpg"))
+			Expect(dailyMix1.OwnerID).To(Equal("user-1"))
+			Expect(dailyMix1.PluginID).To(Equal("test-playlist-provider"))
+			Expect(dailyMix1.PluginPlaylistID).To(Equal("daily-mix-1"))
+			Expect(dailyMix1.Public).To(BeFalse())
+			Expect(dailyMix1.ValidUntil).To(BeNil())
+		})
+
+		It("generates deterministic playlist IDs", func() {
+			expectedID := id.NewHash("test-playlist-provider", "daily-mix-1", "user-1")
+			Eventually(func() bool {
+				_, exists := mockPlsRepo.GetData(expectedID)
+				return exists
+			}).Should(BeTrue())
+		})
+
+		It("creates distinct IDs for different playlists", func() {
+			id1 := id.NewHash("test-playlist-provider", "daily-mix-1", "user-1")
+			id2 := id.NewHash("test-playlist-provider", "daily-mix-2", "user-1")
+			Expect(id1).ToNot(Equal(id2))
+
+			Eventually(func() bool {
+				_, exists1 := mockPlsRepo.GetData(id1)
+				_, exists2 := mockPlsRepo.GetData(id2)
+				return exists1 && exists2
+			}).Should(BeTrue())
+		})
+	})
+
+	Describe("GetAvailablePlaylists error handling", func() {
+		It("handles plugin errors gracefully", func() {
+			errManager, _ := createTestManagerWithPlugins(map[string]map[string]string{
+				"test-playlist-provider": {"error": "service unavailable"},
+			}, "test-playlist-provider"+PackageExtension)
+
+			// Should still have the syncer (error is logged, not fatal)
+			Expect(findSyncer(errManager, "test-playlist-provider")).ToNot(BeNil())
+
+			// But no playlists created
+			errPlsRepo := errManager.ds.(*tests.MockDataStore).MockedPlaylist.(*tests.MockPlaylistRepo)
+			// The syncer was started but GetAvailablePlaylists returned error,
+			// so no playlists should be created
+			Consistently(func() int {
+				return errPlsRepo.Len()
+			}, "500ms").Should(Equal(0))
+		})
+	})
+
+	Describe("GetPlaylist NotFound error", func() {
+		It("skips playlists when plugin returns NotFound", func() {
+			notFoundManager, _ := createTestManagerWithPlugins(map[string]map[string]string{
+				"test-playlist-provider": {
+					"get_playlist_error":      "playlist temporarily unavailable",
+					"get_playlist_error_type": string(capabilities.PlaylistProviderErrorNotFound),
+				},
+			}, "test-playlist-provider"+PackageExtension)
+
+			// Should still have the syncer
+			Expect(findSyncer(notFoundManager, "test-playlist-provider")).ToNot(BeNil())
+
+			// No playlists should be created (all returned NotFound)
+			notFoundPlsRepo := notFoundManager.ds.(*tests.MockDataStore).MockedPlaylist.(*tests.MockPlaylistRepo)
+			Consistently(func() int {
+				return notFoundPlsRepo.Len()
+			}, "500ms").Should(Equal(0))
+
+			// No refresh timers should be scheduled for NotFound playlists
+			syncer := findSyncer(notFoundManager, "test-playlist-provider")
+			Eventually(func() int32 {
+				return syncer.refreshTimerCount.Load()
+			}).Should(Equal(int32(0)))
+		})
+	})
+
+	Describe("GetPlaylist transient error with RetryInterval", func() {
+		It("stores retryInterval and schedules retry on transient errors", func() {
+			retryManager, _ := createTestManagerWithPlugins(map[string]map[string]string{
+				"test-playlist-provider": {
+					"get_playlist_error": "temporary failure",
+					"retry_interval":     "60",
+				},
+			}, "test-playlist-provider"+PackageExtension)
+
+			syncer := findSyncer(retryManager, "test-playlist-provider")
+			Expect(syncer).ToNot(BeNil())
+
+			// retryInterval should be stored from the response
+			Eventually(func() time.Duration {
+				return time.Duration(syncer.retryInterval.Load())
+			}).Should(Equal(60 * time.Second))
+
+			// No playlists should be created (GetPlaylist failed)
+			retryPlsRepo := retryManager.ds.(*tests.MockDataStore).MockedPlaylist.(*tests.MockPlaylistRepo)
+			Consistently(func() int {
+				return retryPlsRepo.Len()
+			}, "500ms").Should(Equal(0))
+
+			// Refresh timers should be scheduled for transient errors
+			Eventually(func() int32 {
+				return syncer.refreshTimerCount.Load()
+			}).Should(BeNumerically(">=", int32(1)))
+		})
+	})
+
+	Describe("user permission validation", func() {
+		It("skips playlists for unauthorized users when AllUsers is false", func() {
+			// Create manager with restricted users — only "other-user" is allowed,
+			// but the plugin returns playlists for "admin" which resolves to "user-1"
+			restrictedManager, _ := createTestManagerWithPluginOverrides(nil,
+				map[string]pluginOverride{
+					"test-playlist-provider": {AllUsers: false, Users: `["other-user"]`},
+				},
+				"test-playlist-provider"+PackageExtension,
+			)
+
+			// No playlists should be created because "user-1" is not in allowed users
+			restrictedPlsRepo := restrictedManager.ds.(*tests.MockDataStore).MockedPlaylist.(*tests.MockPlaylistRepo)
+			Consistently(func() int {
+				return restrictedPlsRepo.Len()
+			}, "500ms").Should(Equal(0))
+		})
+
+		It("creates playlists for authorized users when AllUsers is false", func() {
+			// Create manager with restricted users — "user-1" is allowed,
+			// and the plugin returns playlists for "admin" which resolves to "user-1"
+			allowedManager, _ := createTestManagerWithPluginOverrides(nil,
+				map[string]pluginOverride{
+					"test-playlist-provider": {AllUsers: false, Users: `["user-1"]`},
+				},
+				"test-playlist-provider"+PackageExtension,
+			)
+
+			// Playlists should be created because "user-1" is in allowed users
+			allowedPlsRepo := allowedManager.ds.(*tests.MockDataStore).MockedPlaylist.(*tests.MockPlaylistRepo)
+			Eventually(func() int {
+				return allowedPlsRepo.Len()
+			}).Should(BeNumerically(">=", 2))
+		})
+	})
+
+	Describe("stop", func() {
+		It("stops the syncer when the manager stops", func() {
+			stopManager, _ := createTestManagerWithPlugins(nil,
+				"test-playlist-provider"+PackageExtension,
+			)
+			Expect(findSyncer(stopManager, "test-playlist-provider")).ToNot(BeNil())
+
+			err := stopManager.Stop()
+			Expect(err).ToNot(HaveOccurred())
+			// After Stop(), the plugin is unloaded so findSyncer returns nil
+			Expect(findSyncer(stopManager, "test-playlist-provider")).To(BeNil())
+		})
+	})
+})

plugins/plugins_suite_test.go

@@ -17,6 +17,7 @@ import (
 
 	"github.com/navidrome/navidrome/conf"
 	"github.com/navidrome/navidrome/conf/configtest"
+	"github.com/navidrome/navidrome/core/matcher"
 	"github.com/navidrome/navidrome/log"
 	"github.com/navidrome/navidrome/model"
 	"github.com/navidrome/navidrome/tests"
@@ -81,10 +82,26 @@ func createTestManagerWithPlugins(pluginConfig map[string]map[string]string, plu
 	return createTestManagerWithPluginsAndMetrics(pluginConfig, noopMetricsRecorder{}, plugins...)
 }
 
+// pluginOverride allows tests to override model.Plugin fields for specific plugins.
+type pluginOverride struct {
+	AllUsers bool
+	Users    string // JSON array of user IDs, e.g. `["user-1"]`
+}
+
+// createTestManagerWithPluginOverrides creates a new plugin Manager with the given plugin config,
+// per-plugin overrides, and specified plugins.
+func createTestManagerWithPluginOverrides(pluginConfig map[string]map[string]string, overrides map[string]pluginOverride, plugins ...string) (*Manager, string) {
+	return createTestManagerFull(pluginConfig, overrides, noopMetricsRecorder{}, plugins...)
+}
+
 // createTestManagerWithPluginsAndMetrics creates a new plugin Manager with the given plugin config,
 // metrics recorder, and specified plugins. It creates a temp directory, copies the specified plugins, and starts the manager.
 // Returns the manager and temp directory path.
 func createTestManagerWithPluginsAndMetrics(pluginConfig map[string]map[string]string, metrics PluginMetricsRecorder, plugins ...string) (*Manager, string) {
+	return createTestManagerFull(pluginConfig, nil, metrics, plugins...)
+}
+
+func createTestManagerFull(pluginConfig map[string]map[string]string, overrides map[string]pluginOverride, metrics PluginMetricsRecorder, plugins ...string) (*Manager, string) {
 	// Create temp directory
 	tmpDir, err := os.MkdirTemp("", "plugins-test-*")
 	Expect(err).ToNot(HaveOccurred())
@@ -113,14 +130,21 @@ func createTestManagerWithPluginsAndMetrics(pluginConfig map[string]map[string]s
 			configJSON = string(configBytes)
 		}
 
-		enabledPlugins = append(enabledPlugins, model.Plugin{
+		p := model.Plugin{
 			ID:       pluginName,
 			Path:     destPath,
 			SHA256:   hashHex,
 			Enabled:  true,
 			Config:   configJSON,
 			AllUsers: true, // Allow all users by default in tests
-		})
+		}
+		if overrides != nil {
+			if o, ok := overrides[pluginName]; ok {
+				p.AllUsers = o.AllUsers
+				p.Users = o.Users
+			}
+		}
+		enabledPlugins = append(enabledPlugins, p)
 	}
 
 	// Setup config
@@ -133,12 +157,19 @@ func createTestManagerWithPluginsAndMetrics(pluginConfig map[string]map[string]s
 	mockPluginRepo := tests.CreateMockPluginRepo()
 	mockPluginRepo.Permitted = true
 	mockPluginRepo.SetData(enabledPlugins)
-	dataStore := &tests.MockDataStore{MockedPlugin: mockPluginRepo}
+
+	// Pre-seed a mock user repo with a default user so that
+	// PlaylistProvider's discoverAndSync can resolve usernames.
+	mockUserRepo := tests.CreateMockUserRepo()
+	_ = mockUserRepo.Put(&model.User{ID: "user-1", UserName: "admin"})
+
+	dataStore := &tests.MockDataStore{MockedPlugin: mockPluginRepo, MockedUser: mockUserRepo, MockedPlaylist: tests.CreateMockPlaylistRepo()}
 
 	// Create and start manager
 	manager := &Manager{
 		plugins:        make(map[string]*plugin),
 		ds:             dataStore,
+		matcher:        matcher.New(dataStore),
 		metrics:        metrics,
 		subsonicRouter: http.NotFoundHandler(), // Stub router for tests
 	}

plugins/testdata/test-playlist-provider/go.mod

@@ -0,0 +1,16 @@
+module test-playlist-provider
+
+go 1.25
+
+require github.com/navidrome/navidrome/plugins/pdk/go v0.0.0
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/extism/go-pdk v1.1.3 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
+
+replace github.com/navidrome/navidrome/plugins/pdk/go => ../../pdk/go

plugins/testdata/test-playlist-provider/go.sum

@@ -0,0 +1,14 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/extism/go-pdk v1.1.3 h1:hfViMPWrqjN6u67cIYRALZTZLk/enSPpNKa+rZ9X2SQ=
+github.com/extism/go-pdk v1.1.3/go.mod h1:Gz+LIU/YCKnKXhgge8yo5Yu1F/lbv7KtKFkiCSzW/P4=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

plugins/testdata/test-playlist-provider/main.go

@@ -0,0 +1,86 @@
+// Test playlist provider plugin for Navidrome plugin system integration tests.
+package main
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/navidrome/navidrome/plugins/pdk/go/pdk"
+	pp "github.com/navidrome/navidrome/plugins/pdk/go/playlistprovider"
+)
+
+func init() {
+	pp.Register(&testPlaylistProvider{})
+}
+
+type testPlaylistProvider struct{}
+
+func (t *testPlaylistProvider) GetAvailablePlaylists(_ pp.GetAvailablePlaylistsRequest) (pp.GetAvailablePlaylistsResponse, error) {
+	// Check for configured error
+	errMsg, hasErr := pdk.GetConfig("error")
+	if hasErr && errMsg != "" {
+		return pp.GetAvailablePlaylistsResponse{}, fmt.Errorf("%s", errMsg)
+	}
+
+	// Get the owner username from config (defaults to "admin")
+	ownerUsername := "admin"
+	if u, ok := pdk.GetConfig("owner_username"); ok && u != "" {
+		ownerUsername = u
+	}
+
+	resp := pp.GetAvailablePlaylistsResponse{
+		Playlists: []pp.PlaylistInfo{
+			{ID: "daily-mix-1", OwnerUsername: ownerUsername},
+			{ID: "daily-mix-2", OwnerUsername: ownerUsername},
+		},
+		RefreshInterval: 0, // No re-discovery in tests
+	}
+
+	// Support configurable retry interval
+	if ri, ok := pdk.GetConfig("retry_interval"); ok && ri != "" {
+		if v, err := strconv.ParseInt(ri, 10, 64); err == nil {
+			resp.RetryInterval = v
+		}
+	}
+
+	return resp, nil
+}
+
+func (t *testPlaylistProvider) GetPlaylist(req pp.GetPlaylistRequest) (pp.GetPlaylistResponse, error) {
+	// Check for configured error
+	errMsg, hasErr := pdk.GetConfig("get_playlist_error")
+	if hasErr && errMsg != "" {
+		// Check if the error should be typed (e.g., NotFound)
+		errType, _ := pdk.GetConfig("get_playlist_error_type")
+		if errType == pp.PlaylistProviderErrorNotFound.Error() {
+			return pp.GetPlaylistResponse{}, fmt.Errorf("%w: %s", pp.PlaylistProviderErrorNotFound, errMsg)
+		}
+		return pp.GetPlaylistResponse{}, fmt.Errorf("%s", errMsg)
+	}
+
+	switch req.ID {
+	case "daily-mix-1":
+		return pp.GetPlaylistResponse{
+			Name:        "Daily Mix 1",
+			Description: "Your personalized daily mix",
+			CoverArtURL: "https://example.com/cover1.jpg",
+			Tracks: []pp.SongRef{
+				{Name: "Song A", Artist: "Artist One"},
+				{Name: "Song B", Artist: "Artist Two"},
+			},
+			ValidUntil: 0, // Static, no refresh
+		}, nil
+	case "daily-mix-2":
+		return pp.GetPlaylistResponse{
+			Name: "Daily Mix 2",
+			Tracks: []pp.SongRef{
+				{Name: "Song C", Artist: "Artist Three"},
+			},
+			ValidUntil: 0,
+		}, nil
+	default:
+		return pp.GetPlaylistResponse{}, fmt.Errorf("unknown playlist: %s", req.ID)
+	}
+}
+
+func main() {}

plugins/testdata/test-playlist-provider/manifest.json

@@ -0,0 +1,11 @@
+{
+  "name": "Test Playlist Provider",
+  "author": "Navidrome Test",
+  "version": "1.0.0",
+  "description": "A test playlist provider plugin for integration testing",
+  "permissions": {
+    "users": {
+      "reason": "Required for playlist ownership"
+    }
+  }
+}

server/subsonic/playlists.go

@@ -165,11 +165,13 @@ func buildOSPlaylist(ctx context.Context, p model.Playlist) *responses.OpenSubso
 	}
 	pls := responses.OpenSubsonicPlaylist{}
 
-	if p.IsSmartPlaylist() {
+	if p.IsReadOnly() {
 		pls.Readonly = true
 
-		if p.EvaluatedAt != nil {
+		if p.IsSmartPlaylist() && p.EvaluatedAt != nil {
 			pls.ValidUntil = P(p.EvaluatedAt.Add(conf.Server.SmartPlaylistRefreshDelay))
+		} else if p.IsPluginPlaylist() && p.ValidUntil != nil {
+			pls.ValidUntil = p.ValidUntil
 		}
 	} else {
 		user, ok := request.UserFrom(ctx)

server/subsonic/playlists_test.go

@@ -156,6 +156,51 @@ var _ = Describe("buildPlaylist", func() {
 		})
 	})
 
+	Describe("plugin playlist", func() {
+		BeforeEach(func() {
+			createdAt := time.Date(2023, 1, 15, 10, 30, 0, 0, time.UTC)
+			updatedAt := time.Date(2023, 2, 20, 14, 45, 0, 0, time.UTC)
+
+			playlist = model.Playlist{
+				ID:               "pls-plugin",
+				Name:             "Daily Mix",
+				Comment:          "Generated by plugin",
+				OwnerName:        "admin",
+				OwnerID:          "1234",
+				Public:           false,
+				SongCount:        5,
+				Duration:         300,
+				CreatedAt:        createdAt,
+				UpdatedAt:        updatedAt,
+				PluginID:         "test-plugin",
+				PluginPlaylistID: "daily-mix",
+			}
+		})
+
+		It("marks plugin playlist as readonly with no ValidUntil when not set", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "1234", UserName: "admin"})
+			result := router.buildPlaylist(ctx, playlist)
+			Expect(result.Readonly).To(BeTrue())
+			Expect(result.ValidUntil).To(BeNil())
+		})
+
+		It("exposes ValidUntil when set on the model", func() {
+			validUntil := time.Date(2023, 3, 1, 12, 0, 0, 0, time.UTC)
+			playlist.ValidUntil = &validUntil
+
+			ctx = request.WithUser(ctx, model.User{ID: "1234", UserName: "admin"})
+			result := router.buildPlaylist(ctx, playlist)
+			Expect(result.Readonly).To(BeTrue())
+			Expect(result.ValidUntil).To(Equal(&validUntil))
+		})
+
+		It("marks plugin playlist as readonly even for non-owner", func() {
+			ctx = request.WithUser(ctx, model.User{ID: "other-user", UserName: "other"})
+			result := router.buildPlaylist(ctx, playlist)
+			Expect(result.Readonly).To(BeTrue())
+		})
+	})
+
 	Describe("smart playlist", func() {
 		evaluatedAt := time.Date(2023, 2, 20, 15, 45, 0, 0, time.UTC)
 		validUntil := evaluatedAt.Add(5 * time.Second)

tests/mock_playlist_repo.go

@@ -2,6 +2,7 @@ package tests
 
 import (
 	"errors"
+	"sync"
 
 	"github.com/deluan/rest"
 	"github.com/navidrome/navidrome/model"
@@ -17,6 +18,7 @@ func CreateMockPlaylistRepo() *MockPlaylistRepo {
 
 type MockPlaylistRepo struct {
 	model.PlaylistRepository
+	mu         sync.RWMutex
 	Data       map[string]*model.Playlist // keyed by ID
 	PathMap    map[string]*model.Playlist // keyed by path
 	Last       *model.Playlist
@@ -26,10 +28,14 @@ type MockPlaylistRepo struct {
 }
 
 func (m *MockPlaylistRepo) SetError(err bool) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	m.Err = err
 }
 
 func (m *MockPlaylistRepo) Get(id string) (*model.Playlist, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
 	if m.Err {
 		return nil, errors.New("error")
 	}
@@ -46,6 +52,8 @@ func (m *MockPlaylistRepo) GetWithTracks(id string, _, _ bool) (*model.Playlist,
 }
 
 func (m *MockPlaylistRepo) Put(pls *model.Playlist) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	if m.Err {
 		return errors.New("error")
 	}
@@ -60,6 +68,8 @@ func (m *MockPlaylistRepo) Put(pls *model.Playlist) error {
 }
 
 func (m *MockPlaylistRepo) FindByPath(path string) (*model.Playlist, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
 	if m.Err {
 		return nil, errors.New("error")
 	}
@@ -72,6 +82,8 @@ func (m *MockPlaylistRepo) FindByPath(path string) (*model.Playlist, error) {
 }
 
 func (m *MockPlaylistRepo) Delete(id string) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
 	if m.Err {
 		return errors.New("error")
 	}
@@ -80,10 +92,14 @@ func (m *MockPlaylistRepo) Delete(id string) error {
 }
 
 func (m *MockPlaylistRepo) Tracks(_ string, _ bool) model.PlaylistTrackRepository {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
 	return m.TracksRepo
 }
 
 func (m *MockPlaylistRepo) Exists(id string) (bool, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
 	if m.Err {
 		return false, errors.New("error")
 	}
@@ -95,6 +111,8 @@ func (m *MockPlaylistRepo) Exists(id string) (bool, error) {
 }
 
 func (m *MockPlaylistRepo) Count(_ ...rest.QueryOptions) (int64, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
 	if m.Err {
 		return 0, errors.New("error")
 	}
@@ -102,10 +120,39 @@ func (m *MockPlaylistRepo) Count(_ ...rest.QueryOptions) (int64, error) {
 }
 
 func (m *MockPlaylistRepo) CountAll(_ ...model.QueryOptions) (int64, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
 	if m.Err {
 		return 0, errors.New("error")
 	}
 	return int64(len(m.Data)), nil
 }
 
+// Len returns the number of playlists in the repo in a thread-safe manner.
+func (m *MockPlaylistRepo) Len() int {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	return len(m.Data)
+}
+
+// GetData returns a playlist by ID in a thread-safe manner.
+func (m *MockPlaylistRepo) GetData(id string) (*model.Playlist, bool) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	pls, ok := m.Data[id]
+	return pls, ok
+}
+
+// FindByPluginPlaylistID returns the first playlist with the given plugin playlist ID.
+func (m *MockPlaylistRepo) FindByPluginPlaylistID(pluginPlaylistID string) *model.Playlist {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+	for _, pls := range m.Data {
+		if pls.PluginPlaylistID == pluginPlaylistID {
+			return pls
+		}
+	}
+	return nil
+}
+
 var _ model.PlaylistRepository = (*MockPlaylistRepo)(nil)

ui/src/common/playlistUtils.js

@@ -11,5 +11,7 @@ export const isReadOnly = (ownerId) => {
 
 export const isSmartPlaylist = (pls) => !!pls.rules
 
+export const isPluginPlaylist = (pls) => !!pls.pluginId
+
 export const canChangeTracks = (pls) =>
-  isWritable(pls.ownerId) && !isSmartPlaylist(pls)
+  isWritable(pls.ownerId) && !isSmartPlaylist(pls) && !isPluginPlaylist(pls)

ui/src/common/playlistUtils.test.js

@@ -2,6 +2,7 @@ import {
   isWritable,
   isReadOnly,
   isSmartPlaylist,
+  isPluginPlaylist,
   canChangeTracks,
 } from './playlistUtils'
 
@@ -56,6 +57,18 @@ describe('playlistUtils', () => {
     })
   })
 
+  describe('isPluginPlaylist', () => {
+    it('returns true if playlist has pluginId', () => {
+      const playlist = { pluginId: 'test-plugin' }
+      expect(isPluginPlaylist(playlist)).toBe(true)
+    })
+
+    it('returns false if playlist does not have pluginId', () => {
+      const playlist = {}
+      expect(isPluginPlaylist(playlist)).toBe(false)
+    })
+  })
+
   describe('canChangeTracks', () => {
     it('returns true if user is the owner and playlist is not smart', () => {
       localStorage.setItem('userId', 'user1')
@@ -74,5 +87,11 @@ describe('playlistUtils', () => {
       const playlist = { ownerId: 'user1', rules: [] }
       expect(canChangeTracks(playlist)).toBe(false)
     })
+
+    it('returns false if playlist is a plugin playlist', () => {
+      localStorage.setItem('userId', 'user1')
+      const playlist = { ownerId: 'user1', pluginId: 'test-plugin' }
+      expect(canChangeTracks(playlist)).toBe(false)
+    })
   })
 })

ui/src/dialogs/AddToPlaylistDialog.test.jsx

@@ -46,7 +46,7 @@ const createTestUtils = (mockDataProvider) =>
                 data: mockIndexedData,
                 list: {
                   cachedRequests: {
-                    '{"pagination":{"page":1,"perPage":-1},"sort":{"field":"name","order":"ASC"},"filter":{"smart":false}}':
+                    '{"pagination":{"page":1,"perPage":-1},"sort":{"field":"name","order":"ASC"},"filter":{"readonly":false}}':
                       {
                         ids: ['sample-id1', 'sample-id2'],
                         total: 2,

ui/src/dialogs/SelectPlaylistInput.jsx

@@ -264,7 +264,7 @@ export const SelectPlaylistInput = ({ onChange }) => {
     'playlist',
     { page: 1, perPage: -1 },
     { field: 'name', order: 'ASC' },
-    { smart: false },
+    { readonly: false },
   )
 
   const options =

ui/src/dialogs/SelectPlaylistInput.test.jsx

@@ -53,7 +53,7 @@ const createTestComponent = (
                 data: indexedData,
                 list: {
                   cachedRequests: {
-                    '{"pagination":{"page":1,"perPage":-1},"sort":{"field":"name","order":"ASC"},"filter":{"smart":false}}':
+                    '{"pagination":{"page":1,"perPage":-1},"sort":{"field":"name","order":"ASC"},"filter":{"readonly":false}}':
                       {
                         ids: Object.keys(indexedData),
                         total: Object.keys(indexedData).length,

ui/src/playlist/PlaylistEdit.jsx

@@ -11,7 +11,7 @@ import {
   ReferenceInput,
   SelectInput,
 } from 'react-admin'
-import { isWritable, Title } from '../common'
+import { isWritable, isPluginPlaylist, Title } from '../common'
 
 const SyncFragment = ({ formData, variant, ...rest }) => {
   return (
@@ -33,12 +33,17 @@ const PlaylistEditForm = (props) => {
   const { permissions } = usePermissions()
   return (
     <SimpleForm redirect="list" variant={'outlined'} {...props}>
-      <TextInput source="name" validate={required()} />
+      <TextInput
+        source="name"
+        validate={required()}
+        disabled={isPluginPlaylist(record)}
+      />
       <TextInput
         multiline
         minRows={3}
         source="comment"
         fullWidth
+        disabled={isPluginPlaylist(record)}
         inputProps={{
           style: { resize: 'vertical' },
         }}

ui/src/playlist/PlaylistList.jsx

@@ -24,6 +24,7 @@ import {
   List,
   Writable,
   isWritable,
+  isPluginPlaylist,
   useSelectedFields,
   useResourceRefresh,
 } from '../common'
@@ -115,7 +116,7 @@ const ToggleAutoImport = ({ resource, source }) => {
     <Switch
       checked={record[source]}
       onClick={handleClick}
-      disabled={!isWritable(record.ownerId)}
+      disabled={!isWritable(record.ownerId) || isPluginPlaylist(record)}
     />
   ) : null
 }