diff --git a/README.md b/README.md
index ebad6e4..ef8dd3c 100644
--- a/README.md
+++ b/README.md
@@ -130,6 +130,37 @@ err = host.CallPluginJSON(ctx, runtimehost.CallPluginJSONRequest{
 
 The `auth_provider.v1` capability also exposes OAuth-flow RPCs (`InitAuthorize`, `ExchangeCode`, `RefreshSession`) for plugins that wrap external identity providers.
 
+## Request routers
+
+`request_router.v1` lets the host hand a media request to a download backend
+such as Sonarr, Radarr, or Seerr. The host owns the request lifecycle, policy,
+and quality governance; the plugin routes the request to a configured
+connection and reports its status.
+
+A series request may name seasons in `RequestDescriptor.seasons`. Season `0`
+is Specials, and an empty list means the whole series. A plugin that fulfils
+seasons individually declares it in its manifest:
+
+```json
+{
+  "type": "request_router.v1",
+  "id": "arr",
+  "request_router": { "supports_seasons": true }
+}
+```
+
+A declaring plugin must acquire only the requested seasons. When the series
+already exists upstream, it adds those seasons to what is already tracked and
+leaves the other seasons alone, so a request for season 4 never stops tracking
+seasons 1–3. Repeating a request must converge rather than add the series
+again. `CheckStatus` receives the same descriptor, so status can cover the
+requested seasons.
+
+Plugins without the flag, including every plugin built before it existed, keep
+today's whole-series behaviour. The host requests only the missing seasons of a
+series it already has from plugins that declare `supports_seasons`, because
+any other plugin would add the whole series again.
+
 ## Watch sync providers
 
 `watch_sync_provider.v1` lets external plugins participate in Silo's host-owned
diff --git a/docs/compatibility.md b/docs/compatibility.md
index 953996c..9e28692 100644
--- a/docs/compatibility.md
+++ b/docs/compatibility.md
@@ -68,6 +68,14 @@ Watch-sync rating fields (`WatchSyncEvent.rating` and
 ratings run from 1 to 10, so zero never carries a rating and no presence check
 is needed.
 
+`RequestDescriptor.seasons` is a repeated field, so it has no presence: an
+empty list means the whole series, and season `0` in a non-empty list means
+Specials. A plugin built before the field existed decodes it as an unknown
+field and fulfils the whole series. Because the plugin cannot say so on the
+wire, the host decides who may receive a season-only request from the
+manifest's `RequestRouterDescriptor.supports_seasons` flag instead. An absent
+descriptor means the flag is false.
+
 A season-scoped `GetImagesRequest` is a scope, not a guarantee. Plugins that
 can filter by season should do so, and plugins should populate
 `ImageRecord.season_number` whenever the season is known. Hosts must bucket and
diff --git a/pkg/pluginproto/silo/plugin/v1/common.pb.go b/pkg/pluginproto/silo/plugin/v1/common.pb.go
index 267874d..ba74bcd 100644
--- a/pkg/pluginproto/silo/plugin/v1/common.pb.go
+++ b/pkg/pluginproto/silo/plugin/v1/common.pb.go
@@ -981,8 +981,12 @@ type CapabilityDescriptor struct {
 	// of type "network_access_provider.v1". The host lists available overlay
 	// providers from this descriptor without launching the plugin.
 	NetworkAccessProvider *NetworkAccessProviderDescriptor `protobuf:"bytes,11,opt,name=network_access_provider,json=networkAccessProvider,proto3" json:"network_access_provider,omitempty"`
-	unknownFields         protoimpl.UnknownFields
-	sizeCache             protoimpl.SizeCache
+	// Typed request-router contract metadata. Only meaningful for capabilities
+	// of type "request_router.v1". Optional: an absent descriptor declares no
+	// optional request-router features.
+	RequestRouter *RequestRouterDescriptor `protobuf:"bytes,12,opt,name=request_router,json=requestRouter,proto3" json:"request_router,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *CapabilityDescriptor) Reset() {
@@ -1092,6 +1096,13 @@ func (x *CapabilityDescriptor) GetNetworkAccessProvider() *NetworkAccessProvider
 	return nil
 }
 
+func (x *CapabilityDescriptor) GetRequestRouter() *RequestRouterDescriptor {
+	if x != nil {
+		return x.RequestRouter
+	}
+	return nil
+}
+
 // PluginPresentation describes a plugin for server operators and links them to
 // its publisher, source, support, and release history. These values are
 // self-declared by the plugin and never determine catalog approval.
@@ -1610,7 +1621,7 @@ var File_silo_plugin_v1_common_proto protoreflect.FileDescriptor
 
 const file_silo_plugin_v1_common_proto_rawDesc = "" +
 	"\n" +
-	"\x1bsilo/plugin/v1/common.proto\x12\x0esilo.plugin.v1\x1a\x1cgoogle/protobuf/struct.proto\x1a,silo/plugin/v1/network_access_provider.proto\x1a(silo/plugin/v1/watch_sync_provider.proto\"7\n" +
+	"\x1bsilo/plugin/v1/common.proto\x12\x0esilo.plugin.v1\x1a\x1cgoogle/protobuf/struct.proto\x1a,silo/plugin/v1/network_access_provider.proto\x1a#silo/plugin/v1/request_router.proto\x1a(silo/plugin/v1/watch_sync_provider.proto\"7\n" +
 	"\x11SupportedPlatform\x12\x0e\n" +
 	"\x02os\x18\x01 \x01(\tR\x02os\x12\x12\n" +
 	"\x04arch\x18\x02 \x01(\tR\x04arch\"\xd9\x01\n" +
@@ -1687,7 +1698,7 @@ const file_silo_plugin_v1_common_proto_rawDesc = "" +
 	"\rPackagedAsset\x12\x12\n" +
 	"\x04path\x18\x01 \x01(\tR\x04path\x12!\n" +
 	"\fcontent_type\x18\x02 \x01(\tR\vcontentType\x12\x1c\n" +
-	"\tintegrity\x18\x03 \x01(\tR\tintegrity\"\x9d\x04\n" +
+	"\tintegrity\x18\x03 \x01(\tR\tintegrity\"\xed\x04\n" +
 	"\x14CapabilityDescriptor\x12\x12\n" +
 	"\x04type\x18\x01 \x01(\tR\x04type\x12\x0e\n" +
 	"\x02id\x18\x02 \x01(\tR\x02id\x12!\n" +
@@ -1701,7 +1712,8 @@ const file_silo_plugin_v1_common_proto_rawDesc = "" +
 	"\bicon_url\x18\t \x01(\tR\aiconUrl\x12[\n" +
 	"\x13watch_sync_provider\x18\n" +
 	" \x01(\v2+.silo.plugin.v1.WatchSyncProviderDescriptorR\x11watchSyncProvider\x12g\n" +
-	"\x17network_access_provider\x18\v \x01(\v2/.silo.plugin.v1.NetworkAccessProviderDescriptorR\x15networkAccessProvider\"\xa2\x03\n" +
+	"\x17network_access_provider\x18\v \x01(\v2/.silo.plugin.v1.NetworkAccessProviderDescriptorR\x15networkAccessProvider\x12N\n" +
+	"\x0erequest_router\x18\f \x01(\v2'.silo.plugin.v1.RequestRouterDescriptorR\rrequestRouter\"\xa2\x03\n" +
 	"\x12PluginPresentation\x12!\n" +
 	"\fdisplay_name\x18\x01 \x01(\tR\vdisplayName\x12\x18\n" +
 	"\asummary\x18\x02 \x01(\tR\asummary\x121\n" +
@@ -1796,6 +1808,7 @@ var file_silo_plugin_v1_common_proto_goTypes = []any{
 	(*structpb.Struct)(nil),                 // 22: google.protobuf.Struct
 	(*WatchSyncProviderDescriptor)(nil),     // 23: silo.plugin.v1.WatchSyncProviderDescriptor
 	(*NetworkAccessProviderDescriptor)(nil), // 24: silo.plugin.v1.NetworkAccessProviderDescriptor
+	(*RequestRouterDescriptor)(nil),         // 25: silo.plugin.v1.RequestRouterDescriptor
 }
 var file_silo_plugin_v1_common_proto_depIdxs = []int32{
 	8,  // 0: silo.plugin.v1.ConfigSchema.admin_form:type_name -> silo.plugin.v1.AdminFormDescriptor
@@ -1812,27 +1825,28 @@ var file_silo_plugin_v1_common_proto_depIdxs = []int32{
 	22, // 11: silo.plugin.v1.CapabilityDescriptor.metadata:type_name -> google.protobuf.Struct
 	23, // 12: silo.plugin.v1.CapabilityDescriptor.watch_sync_provider:type_name -> silo.plugin.v1.WatchSyncProviderDescriptor
 	24, // 13: silo.plugin.v1.CapabilityDescriptor.network_access_provider:type_name -> silo.plugin.v1.NetworkAccessProviderDescriptor
-	1,  // 14: silo.plugin.v1.PluginManifest.supported_platforms:type_name -> silo.plugin.v1.SupportedPlatform
-	12, // 15: silo.plugin.v1.PluginManifest.capabilities:type_name -> silo.plugin.v1.CapabilityDescriptor
-	2,  // 16: silo.plugin.v1.PluginManifest.global_config_schema:type_name -> silo.plugin.v1.ConfigSchema
-	2,  // 17: silo.plugin.v1.PluginManifest.user_config_schema:type_name -> silo.plugin.v1.ConfigSchema
-	10, // 18: silo.plugin.v1.PluginManifest.http_routes:type_name -> silo.plugin.v1.HttpRouteDescriptor
-	11, // 19: silo.plugin.v1.PluginManifest.assets:type_name -> silo.plugin.v1.PackagedAsset
-	22, // 20: silo.plugin.v1.PluginManifest.metadata:type_name -> google.protobuf.Struct
-	13, // 21: silo.plugin.v1.PluginManifest.presentation:type_name -> silo.plugin.v1.PluginPresentation
-	14, // 22: silo.plugin.v1.GetManifestResponse.manifest:type_name -> silo.plugin.v1.PluginManifest
-	9,  // 23: silo.plugin.v1.ConfigureRequest.config:type_name -> silo.plugin.v1.ConfigEntry
-	15, // 24: silo.plugin.v1.Runtime.GetManifest:input_type -> silo.plugin.v1.GetManifestRequest
-	17, // 25: silo.plugin.v1.Runtime.Configure:input_type -> silo.plugin.v1.ConfigureRequest
-	19, // 26: silo.plugin.v1.Runtime.BindHostBroker:input_type -> silo.plugin.v1.BindHostBrokerRequest
-	16, // 27: silo.plugin.v1.Runtime.GetManifest:output_type -> silo.plugin.v1.GetManifestResponse
-	18, // 28: silo.plugin.v1.Runtime.Configure:output_type -> silo.plugin.v1.ConfigureResponse
-	20, // 29: silo.plugin.v1.Runtime.BindHostBroker:output_type -> silo.plugin.v1.BindHostBrokerResponse
-	27, // [27:30] is the sub-list for method output_type
-	24, // [24:27] is the sub-list for method input_type
-	24, // [24:24] is the sub-list for extension type_name
-	24, // [24:24] is the sub-list for extension extendee
-	0,  // [0:24] is the sub-list for field type_name
+	25, // 14: silo.plugin.v1.CapabilityDescriptor.request_router:type_name -> silo.plugin.v1.RequestRouterDescriptor
+	1,  // 15: silo.plugin.v1.PluginManifest.supported_platforms:type_name -> silo.plugin.v1.SupportedPlatform
+	12, // 16: silo.plugin.v1.PluginManifest.capabilities:type_name -> silo.plugin.v1.CapabilityDescriptor
+	2,  // 17: silo.plugin.v1.PluginManifest.global_config_schema:type_name -> silo.plugin.v1.ConfigSchema
+	2,  // 18: silo.plugin.v1.PluginManifest.user_config_schema:type_name -> silo.plugin.v1.ConfigSchema
+	10, // 19: silo.plugin.v1.PluginManifest.http_routes:type_name -> silo.plugin.v1.HttpRouteDescriptor
+	11, // 20: silo.plugin.v1.PluginManifest.assets:type_name -> silo.plugin.v1.PackagedAsset
+	22, // 21: silo.plugin.v1.PluginManifest.metadata:type_name -> google.protobuf.Struct
+	13, // 22: silo.plugin.v1.PluginManifest.presentation:type_name -> silo.plugin.v1.PluginPresentation
+	14, // 23: silo.plugin.v1.GetManifestResponse.manifest:type_name -> silo.plugin.v1.PluginManifest
+	9,  // 24: silo.plugin.v1.ConfigureRequest.config:type_name -> silo.plugin.v1.ConfigEntry
+	15, // 25: silo.plugin.v1.Runtime.GetManifest:input_type -> silo.plugin.v1.GetManifestRequest
+	17, // 26: silo.plugin.v1.Runtime.Configure:input_type -> silo.plugin.v1.ConfigureRequest
+	19, // 27: silo.plugin.v1.Runtime.BindHostBroker:input_type -> silo.plugin.v1.BindHostBrokerRequest
+	16, // 28: silo.plugin.v1.Runtime.GetManifest:output_type -> silo.plugin.v1.GetManifestResponse
+	18, // 29: silo.plugin.v1.Runtime.Configure:output_type -> silo.plugin.v1.ConfigureResponse
+	20, // 30: silo.plugin.v1.Runtime.BindHostBroker:output_type -> silo.plugin.v1.BindHostBrokerResponse
+	28, // [28:31] is the sub-list for method output_type
+	25, // [25:28] is the sub-list for method input_type
+	25, // [25:25] is the sub-list for extension type_name
+	25, // [25:25] is the sub-list for extension extendee
+	0,  // [0:25] is the sub-list for field type_name
 }
 
 func init() { file_silo_plugin_v1_common_proto_init() }
@@ -1841,6 +1855,7 @@ func file_silo_plugin_v1_common_proto_init() {
 		return
 	}
 	file_silo_plugin_v1_network_access_provider_proto_init()
+	file_silo_plugin_v1_request_router_proto_init()
 	file_silo_plugin_v1_watch_sync_provider_proto_init()
 	type x struct{}
 	out := protoimpl.TypeBuilder{
diff --git a/pkg/pluginproto/silo/plugin/v1/request_router.pb.go b/pkg/pluginproto/silo/plugin/v1/request_router.pb.go
index e30d83a..6ef7377 100644
--- a/pkg/pluginproto/silo/plugin/v1/request_router.pb.go
+++ b/pkg/pluginproto/silo/plugin/v1/request_router.pb.go
@@ -35,8 +35,14 @@ type RequestDescriptor struct {
 	// on the downstream service (e.g. Seerr). Empty when the host cannot resolve it.
 	RequesterEmail    string `protobuf:"bytes,8,opt,name=requester_email,json=requesterEmail,proto3" json:"requester_email,omitempty"`
 	RequesterUsername string `protobuf:"bytes,9,opt,name=requester_username,json=requesterUsername,proto3" json:"requester_username,omitempty"`
-	unknownFields     protoimpl.UnknownFields
-	sizeCache         protoimpl.SizeCache
+	// seasons lists the requested season numbers of a series; 0 is Specials.
+	// Empty means the whole series, which is what every request meant before
+	// this field existed. Only set when media_type is "series". Plugins that
+	// declare RequestRouterDescriptor.supports_seasons must fulfil only these
+	// seasons; see that field for the full contract.
+	Seasons       []int32 `protobuf:"varint,10,rep,packed,name=seasons,proto3" json:"seasons,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *RequestDescriptor) Reset() {
@@ -132,6 +138,68 @@ func (x *RequestDescriptor) GetRequesterUsername() string {
 	return ""
 }
 
+func (x *RequestDescriptor) GetSeasons() []int32 {
+	if x != nil {
+		return x.Seasons
+	}
+	return nil
+}
+
+// RequestRouterDescriptor is typed request_router.v1 contract metadata that the
+// host reads from the manifest without launching the plugin. An absent
+// descriptor means every flag is false, which is how the host treats plugins
+// built before a flag existed.
+type RequestRouterDescriptor struct {
+	state protoimpl.MessageState `protogen:"open.v1"`
+	// supports_seasons declares that Fulfill and CheckStatus honour
+	// RequestDescriptor.seasons. A declaring plugin acquires only the listed
+	// seasons; when the series already exists upstream it adds those seasons to
+	// what is already tracked and leaves other seasons unchanged. Repeating a
+	// request converges rather than duplicating work. The host sends a request
+	// for only the missing seasons of a series it already has only to plugins
+	// that set this flag, because other plugins would add the whole series.
+	SupportsSeasons bool `protobuf:"varint,1,opt,name=supports_seasons,json=supportsSeasons,proto3" json:"supports_seasons,omitempty"`
+	unknownFields   protoimpl.UnknownFields
+	sizeCache       protoimpl.SizeCache
+}
+
+func (x *RequestRouterDescriptor) Reset() {
+	*x = RequestRouterDescriptor{}
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *RequestRouterDescriptor) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RequestRouterDescriptor) ProtoMessage() {}
+
+func (x *RequestRouterDescriptor) ProtoReflect() protoreflect.Message {
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RequestRouterDescriptor.ProtoReflect.Descriptor instead.
+func (*RequestRouterDescriptor) Descriptor() ([]byte, []int) {
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *RequestRouterDescriptor) GetSupportsSeasons() bool {
+	if x != nil {
+		return x.SupportsSeasons
+	}
+	return false
+}
+
 type RouterConnection struct {
 	state   protoimpl.MessageState `protogen:"open.v1"`
 	Id      string                 `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@@ -146,7 +214,7 @@ type RouterConnection struct {
 
 func (x *RouterConnection) Reset() {
 	*x = RouterConnection{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[1]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[2]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -158,7 +226,7 @@ func (x *RouterConnection) String() string {
 func (*RouterConnection) ProtoMessage() {}
 
 func (x *RouterConnection) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[1]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[2]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -171,7 +239,7 @@ func (x *RouterConnection) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RouterConnection.ProtoReflect.Descriptor instead.
 func (*RouterConnection) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{1}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *RouterConnection) GetId() string {
@@ -216,7 +284,7 @@ type RequestedQuality struct {
 
 func (x *RequestedQuality) Reset() {
 	*x = RequestedQuality{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[2]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[3]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -228,7 +296,7 @@ func (x *RequestedQuality) String() string {
 func (*RequestedQuality) ProtoMessage() {}
 
 func (x *RequestedQuality) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[2]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[3]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -241,7 +309,7 @@ func (x *RequestedQuality) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RequestedQuality.ProtoReflect.Descriptor instead.
 func (*RequestedQuality) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{2}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *RequestedQuality) GetId() string {
@@ -270,7 +338,7 @@ type FulfillRequest struct {
 
 func (x *FulfillRequest) Reset() {
 	*x = FulfillRequest{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[3]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[4]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -282,7 +350,7 @@ func (x *FulfillRequest) String() string {
 func (*FulfillRequest) ProtoMessage() {}
 
 func (x *FulfillRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[3]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[4]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -295,7 +363,7 @@ func (x *FulfillRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use FulfillRequest.ProtoReflect.Descriptor instead.
 func (*FulfillRequest) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{3}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *FulfillRequest) GetCapabilityId() string {
@@ -343,7 +411,7 @@ type FulfillmentTarget struct {
 
 func (x *FulfillmentTarget) Reset() {
 	*x = FulfillmentTarget{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[4]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[5]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -355,7 +423,7 @@ func (x *FulfillmentTarget) String() string {
 func (*FulfillmentTarget) ProtoMessage() {}
 
 func (x *FulfillmentTarget) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[4]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[5]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -368,7 +436,7 @@ func (x *FulfillmentTarget) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use FulfillmentTarget.ProtoReflect.Descriptor instead.
 func (*FulfillmentTarget) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{4}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *FulfillmentTarget) GetQuality() string {
@@ -424,7 +492,7 @@ type FulfillResponse struct {
 
 func (x *FulfillResponse) Reset() {
 	*x = FulfillResponse{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[5]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[6]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -436,7 +504,7 @@ func (x *FulfillResponse) String() string {
 func (*FulfillResponse) ProtoMessage() {}
 
 func (x *FulfillResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[5]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[6]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -449,7 +517,7 @@ func (x *FulfillResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use FulfillResponse.ProtoReflect.Descriptor instead.
 func (*FulfillResponse) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{5}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *FulfillResponse) GetTargets() []*FulfillmentTarget {
@@ -477,7 +545,7 @@ type TargetRef struct {
 
 func (x *TargetRef) Reset() {
 	*x = TargetRef{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[6]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[7]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -489,7 +557,7 @@ func (x *TargetRef) String() string {
 func (*TargetRef) ProtoMessage() {}
 
 func (x *TargetRef) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[6]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[7]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -502,7 +570,7 @@ func (x *TargetRef) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TargetRef.ProtoReflect.Descriptor instead.
 func (*TargetRef) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{6}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *TargetRef) GetQuality() string {
@@ -538,7 +606,7 @@ type CheckStatusRequest struct {
 
 func (x *CheckStatusRequest) Reset() {
 	*x = CheckStatusRequest{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[7]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[8]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -550,7 +618,7 @@ func (x *CheckStatusRequest) String() string {
 func (*CheckStatusRequest) ProtoMessage() {}
 
 func (x *CheckStatusRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[7]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[8]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -563,7 +631,7 @@ func (x *CheckStatusRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CheckStatusRequest.ProtoReflect.Descriptor instead.
 func (*CheckStatusRequest) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{7}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *CheckStatusRequest) GetCapabilityId() string {
@@ -608,7 +676,7 @@ type TargetStatus struct {
 
 func (x *TargetStatus) Reset() {
 	*x = TargetStatus{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[8]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[9]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -620,7 +688,7 @@ func (x *TargetStatus) String() string {
 func (*TargetStatus) ProtoMessage() {}
 
 func (x *TargetStatus) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[8]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[9]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -633,7 +701,7 @@ func (x *TargetStatus) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TargetStatus.ProtoReflect.Descriptor instead.
 func (*TargetStatus) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{8}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *TargetStatus) GetQuality() string {
@@ -680,7 +748,7 @@ type CheckStatusResponse struct {
 
 func (x *CheckStatusResponse) Reset() {
 	*x = CheckStatusResponse{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[9]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[10]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -692,7 +760,7 @@ func (x *CheckStatusResponse) String() string {
 func (*CheckStatusResponse) ProtoMessage() {}
 
 func (x *CheckStatusResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[9]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[10]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -705,7 +773,7 @@ func (x *CheckStatusResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CheckStatusResponse.ProtoReflect.Descriptor instead.
 func (*CheckStatusResponse) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{9}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *CheckStatusResponse) GetStatuses() []*TargetStatus {
@@ -725,7 +793,7 @@ type ConfigOption struct {
 
 func (x *ConfigOption) Reset() {
 	*x = ConfigOption{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[10]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[11]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -737,7 +805,7 @@ func (x *ConfigOption) String() string {
 func (*ConfigOption) ProtoMessage() {}
 
 func (x *ConfigOption) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[10]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[11]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -750,7 +818,7 @@ func (x *ConfigOption) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ConfigOption.ProtoReflect.Descriptor instead.
 func (*ConfigOption) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{10}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *ConfigOption) GetValue() string {
@@ -776,7 +844,7 @@ type ConfigOptionList struct {
 
 func (x *ConfigOptionList) Reset() {
 	*x = ConfigOptionList{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[11]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[12]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -788,7 +856,7 @@ func (x *ConfigOptionList) String() string {
 func (*ConfigOptionList) ProtoMessage() {}
 
 func (x *ConfigOptionList) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[11]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[12]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -801,7 +869,7 @@ func (x *ConfigOptionList) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ConfigOptionList.ProtoReflect.Descriptor instead.
 func (*ConfigOptionList) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{11}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *ConfigOptionList) GetOptions() []*ConfigOption {
@@ -821,7 +889,7 @@ type ListConfigOptionsRequest struct {
 
 func (x *ListConfigOptionsRequest) Reset() {
 	*x = ListConfigOptionsRequest{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[12]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[13]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -833,7 +901,7 @@ func (x *ListConfigOptionsRequest) String() string {
 func (*ListConfigOptionsRequest) ProtoMessage() {}
 
 func (x *ListConfigOptionsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[12]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[13]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -846,7 +914,7 @@ func (x *ListConfigOptionsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListConfigOptionsRequest.ProtoReflect.Descriptor instead.
 func (*ListConfigOptionsRequest) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{12}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *ListConfigOptionsRequest) GetCapabilityId() string {
@@ -873,7 +941,7 @@ type ListConfigOptionsResponse struct {
 
 func (x *ListConfigOptionsResponse) Reset() {
 	*x = ListConfigOptionsResponse{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[13]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[14]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -885,7 +953,7 @@ func (x *ListConfigOptionsResponse) String() string {
 func (*ListConfigOptionsResponse) ProtoMessage() {}
 
 func (x *ListConfigOptionsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[13]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[14]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -898,7 +966,7 @@ func (x *ListConfigOptionsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListConfigOptionsResponse.ProtoReflect.Descriptor instead.
 func (*ListConfigOptionsResponse) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{13}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *ListConfigOptionsResponse) GetOptionsByField() map[string]*ConfigOptionList {
@@ -918,7 +986,7 @@ type TestConnectionRequest struct {
 
 func (x *TestConnectionRequest) Reset() {
 	*x = TestConnectionRequest{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[14]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[15]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -930,7 +998,7 @@ func (x *TestConnectionRequest) String() string {
 func (*TestConnectionRequest) ProtoMessage() {}
 
 func (x *TestConnectionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[14]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[15]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -943,7 +1011,7 @@ func (x *TestConnectionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TestConnectionRequest.ProtoReflect.Descriptor instead.
 func (*TestConnectionRequest) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{14}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *TestConnectionRequest) GetCapabilityId() string {
@@ -970,7 +1038,7 @@ type TestConnectionResponse struct {
 
 func (x *TestConnectionResponse) Reset() {
 	*x = TestConnectionResponse{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[15]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[16]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -982,7 +1050,7 @@ func (x *TestConnectionResponse) String() string {
 func (*TestConnectionResponse) ProtoMessage() {}
 
 func (x *TestConnectionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[15]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[16]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -995,7 +1063,7 @@ func (x *TestConnectionResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TestConnectionResponse.ProtoReflect.Descriptor instead.
 func (*TestConnectionResponse) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{15}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *TestConnectionResponse) GetOk() bool {
@@ -1027,7 +1095,7 @@ type ValidateRequest struct {
 
 func (x *ValidateRequest) Reset() {
 	*x = ValidateRequest{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[16]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[17]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1039,7 +1107,7 @@ func (x *ValidateRequest) String() string {
 func (*ValidateRequest) ProtoMessage() {}
 
 func (x *ValidateRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[16]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[17]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1052,7 +1120,7 @@ func (x *ValidateRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ValidateRequest.ProtoReflect.Descriptor instead.
 func (*ValidateRequest) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{16}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *ValidateRequest) GetCapabilityId() string {
@@ -1086,7 +1154,7 @@ type ValidateResponse struct {
 
 func (x *ValidateResponse) Reset() {
 	*x = ValidateResponse{}
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[17]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[18]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -1098,7 +1166,7 @@ func (x *ValidateResponse) String() string {
 func (*ValidateResponse) ProtoMessage() {}
 
 func (x *ValidateResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[17]
+	mi := &file_silo_plugin_v1_request_router_proto_msgTypes[18]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1111,7 +1179,7 @@ func (x *ValidateResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ValidateResponse.ProtoReflect.Descriptor instead.
 func (*ValidateResponse) Descriptor() ([]byte, []int) {
-	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{17}
+	return file_silo_plugin_v1_request_router_proto_rawDescGZIP(), []int{18}
 }
 
 func (x *ValidateResponse) GetFieldErrors() map[string]string {
@@ -1132,7 +1200,7 @@ var File_silo_plugin_v1_request_router_proto protoreflect.FileDescriptor
 
 const file_silo_plugin_v1_request_router_proto_rawDesc = "" +
 	"\n" +
-	"#silo/plugin/v1/request_router.proto\x12\x0esilo.plugin.v1\x1a\x1cgoogle/protobuf/struct.proto\"\xc4\x03\n" +
+	"#silo/plugin/v1/request_router.proto\x12\x0esilo.plugin.v1\x1a\x1cgoogle/protobuf/struct.proto\"\xde\x03\n" +
 	"\x11RequestDescriptor\x12\x1d\n" +
 	"\n" +
 	"media_type\x18\x01 \x01(\tR\tmediaType\x12\x14\n" +
@@ -1143,10 +1211,14 @@ const file_silo_plugin_v1_request_router_proto_rawDesc = "" +
 	"\x11requester_user_id\x18\x06 \x01(\x03R\x0frequesterUserId\x120\n" +
 	"\x14requester_profile_id\x18\a \x01(\tR\x12requesterProfileId\x12'\n" +
 	"\x0frequester_email\x18\b \x01(\tR\x0erequesterEmail\x12-\n" +
-	"\x12requester_username\x18\t \x01(\tR\x11requesterUsername\x1a>\n" +
+	"\x12requester_username\x18\t \x01(\tR\x11requesterUsername\x12\x18\n" +
+	"\aseasons\x18\n" +
+	" \x03(\x05R\aseasons\x1a>\n" +
 	"\x10ExternalIdsEntry\x12\x10\n" +
 	"\x03key\x18\x01 \x01(\tR\x03key\x12\x14\n" +
-	"\x05value\x18\x02 \x01(\tR\x05value:\x028\x01\"\x87\x01\n" +
+	"\x05value\x18\x02 \x01(\tR\x05value:\x028\x01\"D\n" +
+	"\x17RequestRouterDescriptor\x12)\n" +
+	"\x10supports_seasons\x18\x01 \x01(\bR\x0fsupportsSeasons\"\x87\x01\n" +
 	"\x10RouterConnection\x12\x0e\n" +
 	"\x02id\x18\x01 \x01(\tR\x02id\x12\x19\n" +
 	"\bbase_url\x18\x02 \x01(\tR\abaseUrl\x12\x17\n" +
@@ -1244,60 +1316,61 @@ func file_silo_plugin_v1_request_router_proto_rawDescGZIP() []byte {
 	return file_silo_plugin_v1_request_router_proto_rawDescData
 }
 
-var file_silo_plugin_v1_request_router_proto_msgTypes = make([]protoimpl.MessageInfo, 21)
+var file_silo_plugin_v1_request_router_proto_msgTypes = make([]protoimpl.MessageInfo, 22)
 var file_silo_plugin_v1_request_router_proto_goTypes = []any{
 	(*RequestDescriptor)(nil),         // 0: silo.plugin.v1.RequestDescriptor
-	(*RouterConnection)(nil),          // 1: silo.plugin.v1.RouterConnection
-	(*RequestedQuality)(nil),          // 2: silo.plugin.v1.RequestedQuality
-	(*FulfillRequest)(nil),            // 3: silo.plugin.v1.FulfillRequest
-	(*FulfillmentTarget)(nil),         // 4: silo.plugin.v1.FulfillmentTarget
-	(*FulfillResponse)(nil),           // 5: silo.plugin.v1.FulfillResponse
-	(*TargetRef)(nil),                 // 6: silo.plugin.v1.TargetRef
-	(*CheckStatusRequest)(nil),        // 7: silo.plugin.v1.CheckStatusRequest
-	(*TargetStatus)(nil),              // 8: silo.plugin.v1.TargetStatus
-	(*CheckStatusResponse)(nil),       // 9: silo.plugin.v1.CheckStatusResponse
-	(*ConfigOption)(nil),              // 10: silo.plugin.v1.ConfigOption
-	(*ConfigOptionList)(nil),          // 11: silo.plugin.v1.ConfigOptionList
-	(*ListConfigOptionsRequest)(nil),  // 12: silo.plugin.v1.ListConfigOptionsRequest
-	(*ListConfigOptionsResponse)(nil), // 13: silo.plugin.v1.ListConfigOptionsResponse
-	(*TestConnectionRequest)(nil),     // 14: silo.plugin.v1.TestConnectionRequest
-	(*TestConnectionResponse)(nil),    // 15: silo.plugin.v1.TestConnectionResponse
-	(*ValidateRequest)(nil),           // 16: silo.plugin.v1.ValidateRequest
-	(*ValidateResponse)(nil),          // 17: silo.plugin.v1.ValidateResponse
-	nil,                               // 18: silo.plugin.v1.RequestDescriptor.ExternalIdsEntry
-	nil,                               // 19: silo.plugin.v1.ListConfigOptionsResponse.OptionsByFieldEntry
-	nil,                               // 20: silo.plugin.v1.ValidateResponse.FieldErrorsEntry
-	(*structpb.Struct)(nil),           // 21: google.protobuf.Struct
+	(*RequestRouterDescriptor)(nil),   // 1: silo.plugin.v1.RequestRouterDescriptor
+	(*RouterConnection)(nil),          // 2: silo.plugin.v1.RouterConnection
+	(*RequestedQuality)(nil),          // 3: silo.plugin.v1.RequestedQuality
+	(*FulfillRequest)(nil),            // 4: silo.plugin.v1.FulfillRequest
+	(*FulfillmentTarget)(nil),         // 5: silo.plugin.v1.FulfillmentTarget
+	(*FulfillResponse)(nil),           // 6: silo.plugin.v1.FulfillResponse
+	(*TargetRef)(nil),                 // 7: silo.plugin.v1.TargetRef
+	(*CheckStatusRequest)(nil),        // 8: silo.plugin.v1.CheckStatusRequest
+	(*TargetStatus)(nil),              // 9: silo.plugin.v1.TargetStatus
+	(*CheckStatusResponse)(nil),       // 10: silo.plugin.v1.CheckStatusResponse
+	(*ConfigOption)(nil),              // 11: silo.plugin.v1.ConfigOption
+	(*ConfigOptionList)(nil),          // 12: silo.plugin.v1.ConfigOptionList
+	(*ListConfigOptionsRequest)(nil),  // 13: silo.plugin.v1.ListConfigOptionsRequest
+	(*ListConfigOptionsResponse)(nil), // 14: silo.plugin.v1.ListConfigOptionsResponse
+	(*TestConnectionRequest)(nil),     // 15: silo.plugin.v1.TestConnectionRequest
+	(*TestConnectionResponse)(nil),    // 16: silo.plugin.v1.TestConnectionResponse
+	(*ValidateRequest)(nil),           // 17: silo.plugin.v1.ValidateRequest
+	(*ValidateResponse)(nil),          // 18: silo.plugin.v1.ValidateResponse
+	nil,                               // 19: silo.plugin.v1.RequestDescriptor.ExternalIdsEntry
+	nil,                               // 20: silo.plugin.v1.ListConfigOptionsResponse.OptionsByFieldEntry
+	nil,                               // 21: silo.plugin.v1.ValidateResponse.FieldErrorsEntry
+	(*structpb.Struct)(nil),           // 22: google.protobuf.Struct
 }
 var file_silo_plugin_v1_request_router_proto_depIdxs = []int32{
-	18, // 0: silo.plugin.v1.RequestDescriptor.external_ids:type_name -> silo.plugin.v1.RequestDescriptor.ExternalIdsEntry
-	21, // 1: silo.plugin.v1.RouterConnection.config:type_name -> google.protobuf.Struct
+	19, // 0: silo.plugin.v1.RequestDescriptor.external_ids:type_name -> silo.plugin.v1.RequestDescriptor.ExternalIdsEntry
+	22, // 1: silo.plugin.v1.RouterConnection.config:type_name -> google.protobuf.Struct
 	0,  // 2: silo.plugin.v1.FulfillRequest.request:type_name -> silo.plugin.v1.RequestDescriptor
-	2,  // 3: silo.plugin.v1.FulfillRequest.qualities:type_name -> silo.plugin.v1.RequestedQuality
-	1,  // 4: silo.plugin.v1.FulfillRequest.connections:type_name -> silo.plugin.v1.RouterConnection
-	4,  // 5: silo.plugin.v1.FulfillResponse.targets:type_name -> silo.plugin.v1.FulfillmentTarget
+	3,  // 3: silo.plugin.v1.FulfillRequest.qualities:type_name -> silo.plugin.v1.RequestedQuality
+	2,  // 4: silo.plugin.v1.FulfillRequest.connections:type_name -> silo.plugin.v1.RouterConnection
+	5,  // 5: silo.plugin.v1.FulfillResponse.targets:type_name -> silo.plugin.v1.FulfillmentTarget
 	0,  // 6: silo.plugin.v1.CheckStatusRequest.request:type_name -> silo.plugin.v1.RequestDescriptor
-	6,  // 7: silo.plugin.v1.CheckStatusRequest.targets:type_name -> silo.plugin.v1.TargetRef
-	1,  // 8: silo.plugin.v1.CheckStatusRequest.connections:type_name -> silo.plugin.v1.RouterConnection
-	8,  // 9: silo.plugin.v1.CheckStatusResponse.statuses:type_name -> silo.plugin.v1.TargetStatus
-	10, // 10: silo.plugin.v1.ConfigOptionList.options:type_name -> silo.plugin.v1.ConfigOption
-	1,  // 11: silo.plugin.v1.ListConfigOptionsRequest.connection:type_name -> silo.plugin.v1.RouterConnection
-	19, // 12: silo.plugin.v1.ListConfigOptionsResponse.options_by_field:type_name -> silo.plugin.v1.ListConfigOptionsResponse.OptionsByFieldEntry
-	1,  // 13: silo.plugin.v1.TestConnectionRequest.connection:type_name -> silo.plugin.v1.RouterConnection
-	1,  // 14: silo.plugin.v1.ValidateRequest.connection:type_name -> silo.plugin.v1.RouterConnection
-	1,  // 15: silo.plugin.v1.ValidateRequest.siblings:type_name -> silo.plugin.v1.RouterConnection
-	20, // 16: silo.plugin.v1.ValidateResponse.field_errors:type_name -> silo.plugin.v1.ValidateResponse.FieldErrorsEntry
-	11, // 17: silo.plugin.v1.ListConfigOptionsResponse.OptionsByFieldEntry.value:type_name -> silo.plugin.v1.ConfigOptionList
-	3,  // 18: silo.plugin.v1.RequestRouter.Fulfill:input_type -> silo.plugin.v1.FulfillRequest
-	7,  // 19: silo.plugin.v1.RequestRouter.CheckStatus:input_type -> silo.plugin.v1.CheckStatusRequest
-	12, // 20: silo.plugin.v1.RequestRouter.ListConfigOptions:input_type -> silo.plugin.v1.ListConfigOptionsRequest
-	14, // 21: silo.plugin.v1.RequestRouter.TestConnection:input_type -> silo.plugin.v1.TestConnectionRequest
-	16, // 22: silo.plugin.v1.RequestRouter.Validate:input_type -> silo.plugin.v1.ValidateRequest
-	5,  // 23: silo.plugin.v1.RequestRouter.Fulfill:output_type -> silo.plugin.v1.FulfillResponse
-	9,  // 24: silo.plugin.v1.RequestRouter.CheckStatus:output_type -> silo.plugin.v1.CheckStatusResponse
-	13, // 25: silo.plugin.v1.RequestRouter.ListConfigOptions:output_type -> silo.plugin.v1.ListConfigOptionsResponse
-	15, // 26: silo.plugin.v1.RequestRouter.TestConnection:output_type -> silo.plugin.v1.TestConnectionResponse
-	17, // 27: silo.plugin.v1.RequestRouter.Validate:output_type -> silo.plugin.v1.ValidateResponse
+	7,  // 7: silo.plugin.v1.CheckStatusRequest.targets:type_name -> silo.plugin.v1.TargetRef
+	2,  // 8: silo.plugin.v1.CheckStatusRequest.connections:type_name -> silo.plugin.v1.RouterConnection
+	9,  // 9: silo.plugin.v1.CheckStatusResponse.statuses:type_name -> silo.plugin.v1.TargetStatus
+	11, // 10: silo.plugin.v1.ConfigOptionList.options:type_name -> silo.plugin.v1.ConfigOption
+	2,  // 11: silo.plugin.v1.ListConfigOptionsRequest.connection:type_name -> silo.plugin.v1.RouterConnection
+	20, // 12: silo.plugin.v1.ListConfigOptionsResponse.options_by_field:type_name -> silo.plugin.v1.ListConfigOptionsResponse.OptionsByFieldEntry
+	2,  // 13: silo.plugin.v1.TestConnectionRequest.connection:type_name -> silo.plugin.v1.RouterConnection
+	2,  // 14: silo.plugin.v1.ValidateRequest.connection:type_name -> silo.plugin.v1.RouterConnection
+	2,  // 15: silo.plugin.v1.ValidateRequest.siblings:type_name -> silo.plugin.v1.RouterConnection
+	21, // 16: silo.plugin.v1.ValidateResponse.field_errors:type_name -> silo.plugin.v1.ValidateResponse.FieldErrorsEntry
+	12, // 17: silo.plugin.v1.ListConfigOptionsResponse.OptionsByFieldEntry.value:type_name -> silo.plugin.v1.ConfigOptionList
+	4,  // 18: silo.plugin.v1.RequestRouter.Fulfill:input_type -> silo.plugin.v1.FulfillRequest
+	8,  // 19: silo.plugin.v1.RequestRouter.CheckStatus:input_type -> silo.plugin.v1.CheckStatusRequest
+	13, // 20: silo.plugin.v1.RequestRouter.ListConfigOptions:input_type -> silo.plugin.v1.ListConfigOptionsRequest
+	15, // 21: silo.plugin.v1.RequestRouter.TestConnection:input_type -> silo.plugin.v1.TestConnectionRequest
+	17, // 22: silo.plugin.v1.RequestRouter.Validate:input_type -> silo.plugin.v1.ValidateRequest
+	6,  // 23: silo.plugin.v1.RequestRouter.Fulfill:output_type -> silo.plugin.v1.FulfillResponse
+	10, // 24: silo.plugin.v1.RequestRouter.CheckStatus:output_type -> silo.plugin.v1.CheckStatusResponse
+	14, // 25: silo.plugin.v1.RequestRouter.ListConfigOptions:output_type -> silo.plugin.v1.ListConfigOptionsResponse
+	16, // 26: silo.plugin.v1.RequestRouter.TestConnection:output_type -> silo.plugin.v1.TestConnectionResponse
+	18, // 27: silo.plugin.v1.RequestRouter.Validate:output_type -> silo.plugin.v1.ValidateResponse
 	23, // [23:28] is the sub-list for method output_type
 	18, // [18:23] is the sub-list for method input_type
 	18, // [18:18] is the sub-list for extension type_name
@@ -1316,7 +1389,7 @@ func file_silo_plugin_v1_request_router_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_silo_plugin_v1_request_router_proto_rawDesc), len(file_silo_plugin_v1_request_router_proto_rawDesc)),
 			NumEnums:      0,
-			NumMessages:   21,
+			NumMessages:   22,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/pluginsdk/convert/convert.go b/pkg/pluginsdk/convert/convert.go
index 1e4fd5c..93c324c 100644
--- a/pkg/pluginsdk/convert/convert.go
+++ b/pkg/pluginsdk/convert/convert.go
@@ -81,6 +81,17 @@ func DecodeCapability(record CapabilityRecord) (*pluginv1.CapabilityDescriptor,
 		}
 		descriptor.WatchSyncProvider = &typed
 	}
+	if requestRouter, ok := record.Metadata["request_router"]; ok {
+		data, err := json.Marshal(requestRouter)
+		if err != nil {
+			return nil, fmt.Errorf("encode request router descriptor: %w", err)
+		}
+		var typed pluginv1.RequestRouterDescriptor
+		if err := capabilityUnmarshal.Unmarshal(data, &typed); err != nil {
+			return nil, fmt.Errorf("decode request router descriptor: %w", err)
+		}
+		descriptor.RequestRouter = &typed
+	}
 	if configSchema, ok := record.Metadata["config_schema"]; ok {
 		schemas, err := decodeConfigSchemas(configSchema)
 		if err != nil {
@@ -128,6 +139,17 @@ func capabilityMetadata(descriptor *pluginv1.CapabilityDescriptor) (map[string]a
 		}
 		metadata["watch_sync_provider"] = value
 	}
+	if descriptor.GetRequestRouter() != nil {
+		data, err := protojson.MarshalOptions{UseProtoNames: true}.Marshal(descriptor.GetRequestRouter())
+		if err != nil {
+			return nil, fmt.Errorf("encode request router descriptor: %w", err)
+		}
+		var value map[string]any
+		if err := json.Unmarshal(data, &value); err != nil {
+			return nil, fmt.Errorf("decode request router descriptor JSON: %w", err)
+		}
+		metadata["request_router"] = value
+	}
 	if len(descriptor.GetConfigSchema()) > 0 {
 		schemas := make([]map[string]any, 0, len(descriptor.GetConfigSchema()))
 		for _, schema := range descriptor.GetConfigSchema() {
diff --git a/pkg/pluginsdk/convert/request_router_test.go b/pkg/pluginsdk/convert/request_router_test.go
new file mode 100644
index 0000000..f1d4e6d
--- /dev/null
+++ b/pkg/pluginsdk/convert/request_router_test.go
@@ -0,0 +1,61 @@
+package convert_test
+
+import (
+	"testing"
+
+	pluginv1 "github.com/Silo-Server/silo-plugin-sdk/pkg/pluginproto/silo/plugin/v1"
+	"github.com/Silo-Server/silo-plugin-sdk/pkg/pluginsdk/convert"
+)
+
+func TestRequestRouterDescriptorRoundTrip(t *testing.T) {
+	manifest := &pluginv1.PluginManifest{Capabilities: []*pluginv1.CapabilityDescriptor{{
+		Type:          "request_router.v1",
+		Id:            "arr",
+		RequestRouter: &pluginv1.RequestRouterDescriptor{SupportsSeasons: true},
+	}}}
+	records, err := convert.CapabilityRecordsFromManifest(manifest)
+	if err != nil {
+		t.Fatal(err)
+	}
+	decoded, err := convert.DecodeCapability(records[0])
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !decoded.GetRequestRouter().GetSupportsSeasons() {
+		t.Fatalf("decoded descriptor = %#v, want supports_seasons", decoded.GetRequestRouter())
+	}
+}
+
+// Metadata stored for a request router built on an older SDK has no
+// request_router key; it must decode as declaring no season support.
+func TestDecodeCapabilityWithoutRequestRouterDeclaresNoSeasonSupport(t *testing.T) {
+	record := convert.CapabilityRecord{
+		Type:     "request_router.v1",
+		ID:       "arr",
+		Metadata: map[string]any{"display_name": "Arr"},
+	}
+	decoded, err := convert.DecodeCapability(record)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if decoded.GetRequestRouter() != nil {
+		t.Fatalf("decoded descriptor = %#v, want absent", decoded.GetRequestRouter())
+	}
+}
+
+func TestDecodeCapabilityDiscardsUnknownRequestRouterData(t *testing.T) {
+	record := convert.CapabilityRecord{
+		Type: "request_router.v1",
+		ID:   "arr",
+		Metadata: map[string]any{
+			"request_router": map[string]any{"supports_seasons": true, "supports_future_thing": true},
+		},
+	}
+	decoded, err := convert.DecodeCapability(record)
+	if err != nil {
+		t.Fatalf("DecodeCapability() error = %v", err)
+	}
+	if !decoded.GetRequestRouter().GetSupportsSeasons() {
+		t.Fatalf("decoded descriptor = %#v, want supports_seasons", decoded.GetRequestRouter())
+	}
+}
diff --git a/pkg/pluginsdk/manifest/manifest.go b/pkg/pluginsdk/manifest/manifest.go
index 0da82bd..746eb43 100644
--- a/pkg/pluginsdk/manifest/manifest.go
+++ b/pkg/pluginsdk/manifest/manifest.go
@@ -116,6 +116,9 @@ func Validate(manifest *pluginv1.PluginManifest) error {
 		if err := validateNetworkAccessCapability(capability); err != nil {
 			return err
 		}
+		if err := validateRequestRouterCapability(capability); err != nil {
+			return err
+		}
 	}
 	for _, schema := range manifest.GlobalConfigSchema {
 		if err := validateConfigSchema(schema); err != nil {
@@ -229,6 +232,15 @@ func validateNetworkAccessCapability(descriptor *pluginv1.CapabilityDescriptor)
 	return nil
 }
 
+// validateRequestRouterCapability keeps the descriptor optional so request
+// routers built before it existed stay valid.
+func validateRequestRouterCapability(descriptor *pluginv1.CapabilityDescriptor) error {
+	if descriptor.GetType() != capability.RequestRouter && descriptor.GetRequestRouter() != nil {
+		return fmt.Errorf("plugin capability %q: request_router descriptor requires type %q", descriptor.GetId(), capability.RequestRouter)
+	}
+	return nil
+}
+
 // ValidateCatalogPresentation applies the stricter presentation contract used
 // by curated catalogs. The general manifest validator keeps presentation
 // optional so older and directly uploaded plugins remain compatible.
diff --git a/pkg/pluginsdk/manifest/request_router_test.go b/pkg/pluginsdk/manifest/request_router_test.go
new file mode 100644
index 0000000..53ec6b8
--- /dev/null
+++ b/pkg/pluginsdk/manifest/request_router_test.go
@@ -0,0 +1,55 @@
+package manifest_test
+
+import (
+	"testing"
+
+	pluginv1 "github.com/Silo-Server/silo-plugin-sdk/pkg/pluginproto/silo/plugin/v1"
+	publicmanifest "github.com/Silo-Server/silo-plugin-sdk/pkg/pluginsdk/manifest"
+)
+
+func TestLoadRequestRouterDeclaresSeasonSupport(t *testing.T) {
+	raw := []byte(`{
+	  "plugin_id":"silo.requests-arr", "version":"1.0.0", "silo_api_version":"v1",
+	  "capabilities":[{
+	    "type":"request_router.v1", "id":"arr", "display_name":"Arr",
+	    "request_router":{"supports_seasons":true}
+	  }]
+	}`)
+	manifest, err := publicmanifest.Load(raw)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !manifest.GetCapabilities()[0].GetRequestRouter().GetSupportsSeasons() {
+		t.Fatal("supports_seasons = false, want true")
+	}
+}
+
+// A manifest written before the descriptor existed stays valid and declares no
+// season support, so the host keeps today's whole-series behaviour.
+func TestLoadRequestRouterWithoutDescriptorDeclaresNoSeasonSupport(t *testing.T) {
+	raw := []byte(`{
+	  "plugin_id":"silo.requests-arr", "version":"1.0.0", "silo_api_version":"v1",
+	  "capabilities":[{"type":"request_router.v1", "id":"arr", "display_name":"Arr"}]
+	}`)
+	manifest, err := publicmanifest.Load(raw)
+	if err != nil {
+		t.Fatal(err)
+	}
+	capability := manifest.GetCapabilities()[0]
+	if capability.GetRequestRouter() != nil {
+		t.Fatalf("request router descriptor = %#v, want absent", capability.GetRequestRouter())
+	}
+}
+
+func TestValidateRequestRouterRejectsDescriptorOnOtherType(t *testing.T) {
+	manifest := &pluginv1.PluginManifest{
+		PluginId: "silo.invalid", Version: "1.0.0",
+		Capabilities: []*pluginv1.CapabilityDescriptor{{
+			Type: "scheduled_task.v1", Id: "task",
+			RequestRouter: &pluginv1.RequestRouterDescriptor{SupportsSeasons: true},
+		}},
+	}
+	if err := publicmanifest.Validate(manifest); err == nil {
+		t.Fatal("expected request router descriptor on a scheduled task to fail")
+	}
+}
diff --git a/pkg/pluginsdk/runtime/request_router_test.go b/pkg/pluginsdk/runtime/request_router_test.go
new file mode 100644
index 0000000..adca8aa
--- /dev/null
+++ b/pkg/pluginsdk/runtime/request_router_test.go
@@ -0,0 +1,57 @@
+package runtime_test
+
+import (
+	"context"
+	"net"
+	"slices"
+	"testing"
+
+	pluginv1 "github.com/Silo-Server/silo-plugin-sdk/pkg/pluginproto/silo/plugin/v1"
+	runtime "github.com/Silo-Server/silo-plugin-sdk/pkg/pluginsdk/runtime"
+	"github.com/hashicorp/go-plugin"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/test/bufconn"
+)
+
+type recordingRequestRouter struct {
+	pluginv1.UnimplementedRequestRouterServer
+	seasons chan []int32
+}
+
+func (r recordingRequestRouter) Fulfill(_ context.Context, req *pluginv1.FulfillRequest) (*pluginv1.FulfillResponse, error) {
+	r.seasons <- req.GetRequest().GetSeasons()
+	return &pluginv1.FulfillResponse{}, nil
+}
+
+func TestRequestRouterReceivesRequestedSeasons(t *testing.T) {
+	router := recordingRequestRouter{seasons: make(chan []int32, 1)}
+	plugins := runtime.DefaultPluginSet(runtime.CapabilityServers{Runtime: stubRuntime{}, RequestRouter: router})
+	p := plugins[runtime.PluginSetName].(plugin.GRPCPlugin)
+	srv := grpc.NewServer()
+	if err := p.GRPCServer(nil, srv); err != nil {
+		t.Fatalf("GRPCServer = %v, want nil", err)
+	}
+	listener := bufconn.Listen(1 << 20)
+	go func() { _ = srv.Serve(listener) }()
+	t.Cleanup(srv.Stop)
+
+	conn, err := grpc.NewClient("passthrough:///bufnet",
+		grpc.WithContextDialer(func(ctx context.Context, _ string) (net.Conn, error) { return listener.DialContext(ctx) }),
+		grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		t.Fatalf("NewClient = %v", err)
+	}
+	t.Cleanup(func() { _ = conn.Close() })
+
+	_, err = pluginv1.NewRequestRouterClient(conn).Fulfill(context.Background(), &pluginv1.FulfillRequest{
+		CapabilityId: "arr",
+		Request:      &pluginv1.RequestDescriptor{MediaType: "series", Title: "Example", Seasons: []int32{0, 4}},
+	})
+	if err != nil {
+		t.Fatalf("Fulfill = %v", err)
+	}
+	if got := <-router.seasons; !slices.Equal(got, []int32{0, 4}) {
+		t.Fatalf("seasons = %v, want [0 4]", got)
+	}
+}
diff --git a/proto/silo/plugin/v1/common.proto b/proto/silo/plugin/v1/common.proto
index dae0ff9..2507ca6 100644
--- a/proto/silo/plugin/v1/common.proto
+++ b/proto/silo/plugin/v1/common.proto
@@ -6,6 +6,7 @@ option go_package = "github.com/Silo-Server/silo-plugin-sdk/pkg/pluginproto/silo
 
 import "google/protobuf/struct.proto";
 import "silo/plugin/v1/network_access_provider.proto";
+import "silo/plugin/v1/request_router.proto";
 import "silo/plugin/v1/watch_sync_provider.proto";
 
 message SupportedPlatform {
@@ -148,6 +149,11 @@ message CapabilityDescriptor {
   // of type "network_access_provider.v1". The host lists available overlay
   // providers from this descriptor without launching the plugin.
   NetworkAccessProviderDescriptor network_access_provider = 11;
+
+  // Typed request-router contract metadata. Only meaningful for capabilities
+  // of type "request_router.v1". Optional: an absent descriptor declares no
+  // optional request-router features.
+  RequestRouterDescriptor request_router = 12;
 }
 
 // PluginPresentation describes a plugin for server operators and links them to
diff --git a/proto/silo/plugin/v1/request_router.proto b/proto/silo/plugin/v1/request_router.proto
index 309a707..ca23728 100644
--- a/proto/silo/plugin/v1/request_router.proto
+++ b/proto/silo/plugin/v1/request_router.proto
@@ -31,6 +31,27 @@ message RequestDescriptor {
   // on the downstream service (e.g. Seerr). Empty when the host cannot resolve it.
   string requester_email = 8;
   string requester_username = 9;
+  // seasons lists the requested season numbers of a series; 0 is Specials.
+  // Empty means the whole series, which is what every request meant before
+  // this field existed. Only set when media_type is "series". Plugins that
+  // declare RequestRouterDescriptor.supports_seasons must fulfil only these
+  // seasons; see that field for the full contract.
+  repeated int32 seasons = 10;
+}
+
+// RequestRouterDescriptor is typed request_router.v1 contract metadata that the
+// host reads from the manifest without launching the plugin. An absent
+// descriptor means every flag is false, which is how the host treats plugins
+// built before a flag existed.
+message RequestRouterDescriptor {
+  // supports_seasons declares that Fulfill and CheckStatus honour
+  // RequestDescriptor.seasons. A declaring plugin acquires only the listed
+  // seasons; when the series already exists upstream it adds those seasons to
+  // what is already tracked and leaves other seasons unchanged. Repeating a
+  // request converges rather than duplicating work. The host sends a request
+  // for only the missing seasons of a series it already has only to plugins
+  // that set this flag, because other plugins would add the whole series.
+  bool supports_seasons = 1;
 }
 
 message RouterConnection {