set up the shelf creation in the _set_context_settings function

openpype/hosts/houdini/api/lib.py

@@ -460,3 +460,35 @@ def reset_framerange():
     hou.playbar.setFrameRange(frame_start, frame_end)
     hou.playbar.setPlaybackRange(frame_start, frame_end)
     hou.setFrame(frame_start)
+
+
+def create_shelf():
+    hou.shelves.beginChangeBlock()
+
+    custom_shelf = hou.shelves.newShelf(
+        file_path='',
+        name="custom_shelf",
+        label="Custom Shelf"
+    )
+
+    new_tool = hou.shelves.newTool(
+        file_path='',
+        name='new_tool',
+        label='New Tool',
+        script='',
+        language=hou.scriptLanguage.Python,
+        icon='',
+        help='This is a new tool'
+    )
+
+    if new_tool not in custom_shelf.tools():
+        custom_shelf.setTools(list(custom_shelf.tools()) + [new_tool])
+
+    shelf_set = [
+        shelf for shelf in hou.shelves.shelfSets().values()
+        if shelf.label() == "Create and Refine"
+    ][0]
+
+    shelf_set.setShelves(shelf_set.shelves() + (custom_shelf,))
+
+    hou.shelves.endChangeBlock()

openpype/hosts/houdini/api/pipeline.py

@@ -309,6 +309,7 @@ def _set_context_settings():
         fps
         resolution
         renderer
+        shelves
 
     Returns:
         None
@@ -320,6 +321,7 @@ def _set_context_settings():
     lib.set_scene_fps(fps)
 
     lib.reset_framerange()
+    lib.create_shelf()
 
 
 def on_pyblish_instance_toggled(instance, new_value, old_value):