diff --git a/.quixos-subtree-source.json b/.quixos-subtree-source.json
index b3576a9..80b81b1 100644
--- a/.quixos-subtree-source.json
+++ b/.quixos-subtree-source.json
@@ -1,7 +1,7 @@
 {
   "version": 1,
   "sourceRepo": "https://gitea-external.egads.tutti.syntaxblitz.net/quixos/quixos.git",
-  "sourceCommit": "9472ad0a8e16927025594c294abc44cdfb30596b",
+  "sourceCommit": "0ff224604a054b52ad8b385764e913171bf19468",
   "sourcePath": "quixos-protocol",
   "exportName": "quixos-protocol",
   "mirrorRemote": "https://gitea-external.egads.tutti.syntaxblitz.net/quixos/quixos-protocol.git"
diff --git a/proto/camino/api.proto b/proto/camino/api.proto
index ea85155..a7006eb 100644
--- a/proto/camino/api.proto
+++ b/proto/camino/api.proto
@@ -10,6 +10,7 @@ service CaminoService {
   rpc ListClasses(ListClassesRequest) returns (ListClassesResponse);
   rpc CreateObject(CreateObjectRequest) returns (CreateObjectResponse);
   rpc GetObject(GetObjectRequest) returns (GetObjectResponse);
+  rpc ListObjects(ListObjectsRequest) returns (ListObjectsResponse);
   rpc SetField(SetFieldRequest) returns (SetFieldResponse);
   rpc AddEdge(AddEdgeRequest) returns (AddEdgeResponse);
   rpc ListEdges(ListEdgesRequest) returns (ListEdgesResponse);
@@ -104,6 +105,14 @@ message GetObjectResponse {
   CaminoObject object = 1;
 }
 
+message ListObjectsRequest {
+  string class_id = 1;
+}
+
+message ListObjectsResponse {
+  repeated CaminoObject objects = 1;
+}
+
 message SetFieldRequest {
   string object_id = 1;
   string field_name = 2;