diff --git a/proto/agynio/api/gateway/v1/threads.proto b/proto/agynio/api/gateway/v1/threads.proto
index 855d891..e9c6558 100644
--- a/proto/agynio/api/gateway/v1/threads.proto
+++ b/proto/agynio/api/gateway/v1/threads.proto
@@ -12,6 +12,7 @@ service ThreadsGateway {
   rpc AddParticipant(agynio.api.threads.v1.AddParticipantRequest) returns (agynio.api.threads.v1.AddParticipantResponse);
   rpc SendMessage(agynio.api.threads.v1.SendMessageRequest) returns (agynio.api.threads.v1.SendMessageResponse);
   rpc GetThreads(agynio.api.threads.v1.GetThreadsRequest) returns (agynio.api.threads.v1.GetThreadsResponse);
+  rpc ListOrganizationThreads(agynio.api.threads.v1.ListOrganizationThreadsRequest) returns (agynio.api.threads.v1.ListOrganizationThreadsResponse);
   rpc GetOrganizationThreads(agynio.api.threads.v1.GetOrganizationThreadsRequest) returns (agynio.api.threads.v1.GetOrganizationThreadsResponse);
   rpc GetThread(agynio.api.threads.v1.GetThreadRequest) returns (agynio.api.threads.v1.GetThreadResponse);
   rpc GetMessages(agynio.api.threads.v1.GetMessagesRequest) returns (agynio.api.threads.v1.GetMessagesResponse);
diff --git a/proto/agynio/api/identity/v1/identity.proto b/proto/agynio/api/identity/v1/identity.proto
index fedebef..fd9f654 100644
--- a/proto/agynio/api/identity/v1/identity.proto
+++ b/proto/agynio/api/identity/v1/identity.proto
@@ -22,6 +22,9 @@ service IdentityService {
   rpc RemoveNickname(RemoveNicknameRequest) returns (RemoveNicknameResponse);
   // ResolveNickname resolves an @nickname within an org to its identity.
   rpc ResolveNickname(ResolveNicknameRequest) returns (ResolveNicknameResponse);
+  // BatchGetNicknames resolves identity IDs to nicknames within an org.
+  // Unknown or unset nicknames are omitted from the response.
+  rpc BatchGetNicknames(BatchGetNicknamesRequest) returns (BatchGetNicknamesResponse);
 }
 
 enum IdentityType {
@@ -91,3 +94,17 @@ message ResolveNicknameResponse {
   IdentityType identity_type = 2;
   optional string installation_id = 3;
 }
+
+message BatchGetNicknamesRequest {
+  string organization_id = 1;
+  repeated string identity_ids = 2;
+}
+
+message NicknameEntry {
+  string identity_id = 1;
+  string nickname = 2;
+}
+
+message BatchGetNicknamesResponse {
+  repeated NicknameEntry entries = 1;
+}
diff --git a/proto/agynio/api/runners/v1/runners.proto b/proto/agynio/api/runners/v1/runners.proto
index bacf9e1..e7361f2 100644
--- a/proto/agynio/api/runners/v1/runners.proto
+++ b/proto/agynio/api/runners/v1/runners.proto
@@ -56,6 +56,12 @@ message SampledAtEntry {
   google.protobuf.Timestamp sampled_at = 2;
 }
 
+enum SortDirection {
+  SORT_DIRECTION_UNSPECIFIED = 0;
+  SORT_DIRECTION_ASC = 1;
+  SORT_DIRECTION_DESC = 2;
+}
+
 // ===========================================================================
 // Runner
 // ===========================================================================
@@ -223,6 +229,10 @@ message Workload {
   // programmatic parsing. When status is not FAILED, this value may be unset
   // or stale.
   optional string failure_message = 16;
+  // Denormalized display name for agent_id.
+  string agent_name = 17;
+  // Denormalized display name for runner_id.
+  string runner_name = 18;
 }
 
 message CreateWorkloadRequest {
@@ -291,6 +301,29 @@ message GetWorkloadResponse {
   Workload workload = 1;
 }
 
+enum ListWorkloadsSortField {
+  LIST_WORKLOADS_SORT_FIELD_UNSPECIFIED = 0;
+  LIST_WORKLOADS_SORT_FIELD_STARTED = 1;
+  LIST_WORKLOADS_SORT_FIELD_AGENT = 2;
+  LIST_WORKLOADS_SORT_FIELD_RUNNER = 3;
+  LIST_WORKLOADS_SORT_FIELD_STATUS = 4;
+  LIST_WORKLOADS_SORT_FIELD_DURATION = 5;
+}
+
+message ListWorkloadsSort {
+  ListWorkloadsSortField field = 1;
+  SortDirection direction = 2;
+}
+
+message ListWorkloadsFilter {
+  repeated string agent_id_in = 1;
+  repeated string runner_id_in = 2;
+  repeated WorkloadStatus status_in = 3;
+  optional google.protobuf.Timestamp started_after = 4;
+  optional google.protobuf.Timestamp started_before = 5;
+  optional bool pending_sample = 6;
+}
+
 message ListWorkloadsByThreadRequest {
   string thread_id = 1;
   int32 page_size = 2;
@@ -308,11 +341,18 @@ message ListWorkloadsByThreadResponse {
 
 message ListWorkloadsRequest {
   int32 page_size = 1;
+  // Opaque cursor; reuse only with the same sort and filter.
   string page_token = 2;
-  repeated WorkloadStatus statuses = 3;
+  // Deprecated: use filter.status_in instead.
+  repeated WorkloadStatus statuses = 3 [deprecated = true];
+  // Required organization scope; caller must hold can_view_workloads.
   optional string organization_id = 4;
-  optional string runner_id = 5;
-  optional bool pending_sample = 6;
+  // Deprecated: use filter.runner_id_in instead.
+  optional string runner_id = 5 [deprecated = true];
+  // Deprecated: use filter.pending_sample instead.
+  optional bool pending_sample = 6 [deprecated = true];
+  ListWorkloadsFilter filter = 7;
+  ListWorkloadsSort sort = 8;
 }
 
 message ListWorkloadsResponse {
@@ -351,6 +391,31 @@ message Volume {
   VolumeStatus status = 9;
   optional google.protobuf.Timestamp removed_at = 10;
   optional google.protobuf.Timestamp last_metering_sampled_at = 11;
+  // Denormalized display name for volume_id.
+  string volume_name = 12;
+  // Current attachments for this volume; empty when unattached.
+  repeated Attachment attachments = 13;
+}
+
+enum AttachmentKind {
+  ATTACHMENT_KIND_UNSPECIFIED = 0;
+  ATTACHMENT_KIND_AGENT = 1;
+  ATTACHMENT_KIND_MCP = 2;
+  ATTACHMENT_KIND_HOOK = 3;
+}
+
+message Attachment {
+  AttachmentKind kind = 1;
+  string id = 2;
+  string name = 3;
+}
+
+enum VolumeAttachmentFilterKind {
+  VOLUME_ATTACHMENT_FILTER_KIND_UNSPECIFIED = 0;
+  VOLUME_ATTACHMENT_FILTER_KIND_AGENT = 1;
+  VOLUME_ATTACHMENT_FILTER_KIND_MCP = 2;
+  VOLUME_ATTACHMENT_FILTER_KIND_HOOK = 3;
+  VOLUME_ATTACHMENT_FILTER_KIND_UNATTACHED = 4;
 }
 
 message CreateVolumeRequest {
@@ -388,13 +453,41 @@ message GetVolumeResponse {
   Volume volume = 1;
 }
 
+enum ListVolumesSortField {
+  LIST_VOLUMES_SORT_FIELD_UNSPECIFIED = 0;
+  LIST_VOLUMES_SORT_FIELD_NAME = 1;
+  LIST_VOLUMES_SORT_FIELD_SIZE = 2;
+  LIST_VOLUMES_SORT_FIELD_STATUS = 3;
+  LIST_VOLUMES_SORT_FIELD_CREATED = 4;
+}
+
+message ListVolumesSort {
+  ListVolumesSortField field = 1;
+  SortDirection direction = 2;
+}
+
+message ListVolumesFilter {
+  repeated VolumeStatus status_in = 1;
+  repeated string runner_id_in = 2;
+  repeated VolumeAttachmentFilterKind attached_to_kind_in = 3;
+  optional bool pending_sample = 4;
+  optional string volume_name_substring = 5;
+}
+
 message ListVolumesRequest {
   int32 page_size = 1;
+  // Opaque cursor; reuse only with the same sort and filter.
   string page_token = 2;
-  repeated VolumeStatus statuses = 3;
+  // Deprecated: use filter.status_in instead.
+  repeated VolumeStatus statuses = 3 [deprecated = true];
+  // Required organization scope; caller must hold can_view_volumes.
   optional string organization_id = 4;
-  optional string runner_id = 5;
-  optional bool pending_sample = 6;
+  // Deprecated: use filter.runner_id_in instead.
+  optional string runner_id = 5 [deprecated = true];
+  // Deprecated: use filter.pending_sample instead.
+  optional bool pending_sample = 6 [deprecated = true];
+  ListVolumesFilter filter = 7;
+  ListVolumesSort sort = 8;
 }
 
 message ListVolumesResponse {
diff --git a/proto/agynio/api/threads/v1/threads.proto b/proto/agynio/api/threads/v1/threads.proto
index 60bc818..c209140 100644
--- a/proto/agynio/api/threads/v1/threads.proto
+++ b/proto/agynio/api/threads/v1/threads.proto
@@ -30,7 +30,11 @@ service ThreadsService {
   // List threads for a participant with pagination.
   rpc GetThreads(GetThreadsRequest) returns (GetThreadsResponse);
 
+  // List threads for an organization with pagination.
+  rpc ListOrganizationThreads(ListOrganizationThreadsRequest) returns (ListOrganizationThreadsResponse);
+
   // Get threads for an organization with pagination.
+  // Deprecated: use ListOrganizationThreads.
   rpc GetOrganizationThreads(GetOrganizationThreadsRequest) returns (GetOrganizationThreadsResponse);
 
   // Get a thread by ID.
@@ -64,6 +68,12 @@ enum MessageOrder {
   MESSAGE_ORDER_NEWEST_FIRST = 2;
 }
 
+enum SortDirection {
+  SORT_DIRECTION_UNSPECIFIED = 0;
+  SORT_DIRECTION_ASC = 1;
+  SORT_DIRECTION_DESC = 2;
+}
+
 // ===========================================================================
 // Entities
 // ===========================================================================
@@ -88,6 +98,8 @@ message Participant {
   google.protobuf.Timestamp joined_at = 2;
   // When true, the participant receives messages but does not trigger workload starts.
   bool passive = 3;
+  // Resolved @nickname for this participant in the organization context.
+  string nickname = 4;
 }
 
 // A message within a thread.
@@ -223,6 +235,44 @@ message GetThreadsResponse {
   string next_page_token = 2;
 }
 
+// ===========================================================================
+// ListOrganizationThreads
+// ===========================================================================
+
+enum ListOrganizationThreadsSortField {
+  LIST_ORGANIZATION_THREADS_SORT_FIELD_UNSPECIFIED = 0;
+  LIST_ORGANIZATION_THREADS_SORT_FIELD_CREATED = 1;
+  LIST_ORGANIZATION_THREADS_SORT_FIELD_UPDATED = 2;
+  LIST_ORGANIZATION_THREADS_SORT_FIELD_MESSAGE_COUNT = 3;
+  LIST_ORGANIZATION_THREADS_SORT_FIELD_STATUS = 4;
+}
+
+message ListOrganizationThreadsFilter {
+  repeated ThreadStatus status_in = 1;
+  repeated string participant_id_in = 2;
+  optional google.protobuf.Timestamp created_after = 3;
+  optional google.protobuf.Timestamp created_before = 4;
+}
+
+message ListOrganizationThreadsSort {
+  ListOrganizationThreadsSortField field = 1;
+  SortDirection direction = 2;
+}
+
+message ListOrganizationThreadsRequest {
+  string organization_id = 1; // UUID
+  ListOrganizationThreadsFilter filter = 2;
+  ListOrganizationThreadsSort sort = 3;
+  int32 page_size = 4;
+  // Opaque cursor; reuse only with the same sort and filter.
+  string page_token = 5;
+}
+
+message ListOrganizationThreadsResponse {
+  repeated Thread threads = 1;
+  string next_page_token = 2;
+}
+
 // ===========================================================================
 // GetOrganizationThreads
 // ===========================================================================