diff --git a/openpype/__init__.py b/openpype/__init__.py
index 99629a4257..8b94b2dc3f 100644
--- a/openpype/__init__.py
+++ b/openpype/__init__.py
@@ -78,6 +78,7 @@ def install():
     from openpype.pipeline import (
         LegacyCreator,
         register_loader_plugin_path,
+        register_inventory_action,
     )
     from avalon import pipeline
 
@@ -124,7 +125,7 @@ def install():
             pyblish.register_plugin_path(path)
             register_loader_plugin_path(path)
             avalon.register_plugin_path(LegacyCreator, path)
-            avalon.register_plugin_path(avalon.InventoryAction, path)
+            register_inventory_action(path)
 
     # apply monkey patched discover to original one
     log.info("Patching discovery")
diff --git a/openpype/hosts/fusion/api/pipeline.py b/openpype/hosts/fusion/api/pipeline.py
index 92e54ad6f5..51442d23ff 100644
--- a/openpype/hosts/fusion/api/pipeline.py
+++ b/openpype/hosts/fusion/api/pipeline.py
@@ -15,6 +15,8 @@ from openpype.pipeline import (
     LegacyCreator,
     register_loader_plugin_path,
     deregister_loader_plugin_path,
+    register_inventory_action_path,
+    deregister_inventory_action_path,
 )
 import openpype.hosts.fusion
 
@@ -69,7 +71,7 @@ def install():
 
     register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
-    avalon.api.register_plugin_path(avalon.api.InventoryAction, INVENTORY_PATH)
+    register_inventory_action_path(INVENTORY_PATH)
 
     pyblish.api.register_callback(
         "instanceToggled", on_pyblish_instance_toggled
@@ -93,9 +95,7 @@ def uninstall():
 
     deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
-    avalon.api.deregister_plugin_path(
-        avalon.api.InventoryAction, INVENTORY_PATH
-    )
+    deregister_inventory_action_path(INVENTORY_PATH)
 
     pyblish.api.deregister_callback(
         "instanceToggled", on_pyblish_instance_toggled
diff --git a/openpype/hosts/fusion/plugins/inventory/select_containers.py b/openpype/hosts/fusion/plugins/inventory/select_containers.py
index 294c134505..d554b73a5b 100644
--- a/openpype/hosts/fusion/plugins/inventory/select_containers.py
+++ b/openpype/hosts/fusion/plugins/inventory/select_containers.py
@@ -1,7 +1,7 @@
-from avalon import api
+from openpype.pipeline import InventoryAction
 
 
-class FusionSelectContainers(api.InventoryAction):
+class FusionSelectContainers(InventoryAction):
 
     label = "Select Containers"
     icon = "mouse-pointer"
diff --git a/openpype/hosts/fusion/plugins/inventory/set_tool_color.py b/openpype/hosts/fusion/plugins/inventory/set_tool_color.py
index 2f5ae4d241..c7530ce674 100644
--- a/openpype/hosts/fusion/plugins/inventory/set_tool_color.py
+++ b/openpype/hosts/fusion/plugins/inventory/set_tool_color.py
@@ -1,6 +1,6 @@
-from avalon import api
 from Qt import QtGui, QtWidgets
 
+from openpype.pipeline import InventoryAction
 from openpype import style
 from openpype.hosts.fusion.api import (
     get_current_comp,
@@ -8,7 +8,7 @@ from openpype.hosts.fusion.api import (
 )
 
 
-class FusionSetToolColor(api.InventoryAction):
+class FusionSetToolColor(InventoryAction):
     """Update the color of the selected tools"""
 
     label = "Set Tool Color"
diff --git a/openpype/hosts/maya/api/pipeline.py b/openpype/hosts/maya/api/pipeline.py
index 5cdc3ff4fd..3c09417b21 100644
--- a/openpype/hosts/maya/api/pipeline.py
+++ b/openpype/hosts/maya/api/pipeline.py
@@ -23,7 +23,9 @@ from openpype.lib.path_tools import HostDirmap
 from openpype.pipeline import (
     LegacyCreator,
     register_loader_plugin_path,
+    register_inventory_action_path,
     deregister_loader_plugin_path,
+    deregister_inventory_action_path,
 )
 from openpype.hosts.maya.lib import copy_workspace_mel
 from . import menu, lib
@@ -59,7 +61,7 @@ def install():
 
     register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
-    avalon.api.register_plugin_path(avalon.api.InventoryAction, INVENTORY_PATH)
+    register_inventory_action_path(INVENTORY_PATH)
     log.info(PUBLISH_PATH)
 
     log.info("Installing callbacks ... ")
@@ -188,9 +190,7 @@ def uninstall():
 
     deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
-    avalon.api.deregister_plugin_path(
-        avalon.api.InventoryAction, INVENTORY_PATH
-    )
+    deregister_inventory_action_path(INVENTORY_PATH)
 
     menu.uninstall()
 
diff --git a/openpype/hosts/maya/plugins/inventory/import_modelrender.py b/openpype/hosts/maya/plugins/inventory/import_modelrender.py
index c5d3d0c8f4..8fc26930cb 100644
--- a/openpype/hosts/maya/plugins/inventory/import_modelrender.py
+++ b/openpype/hosts/maya/plugins/inventory/import_modelrender.py
@@ -1,6 +1,8 @@
 import json
-from avalon import api, io
+from avalon import io
+
 from openpype.pipeline import (
+    InventoryAction,
     get_representation_context,
     get_representation_path_from_context,
 )
@@ -10,7 +12,7 @@ from openpype.hosts.maya.api.lib import (
 )
 
 
-class ImportModelRender(api.InventoryAction):
+class ImportModelRender(InventoryAction):
 
     label = "Import Model Render Sets"
     icon = "industry"
diff --git a/openpype/hosts/maya/plugins/inventory/import_reference.py b/openpype/hosts/maya/plugins/inventory/import_reference.py
index 2fa132a867..afb1e0e17f 100644
--- a/openpype/hosts/maya/plugins/inventory/import_reference.py
+++ b/openpype/hosts/maya/plugins/inventory/import_reference.py
@@ -1,11 +1,10 @@
 from maya import cmds
 
-from avalon import api
-
+from openpype.pipeline import InventoryAction
 from openpype.hosts.maya.api.plugin import get_reference_node
 
 
-class ImportReference(api.InventoryAction):
+class ImportReference(InventoryAction):
     """Imports selected reference to inside of the file."""
 
     label = "Import Reference"
diff --git a/openpype/hosts/nuke/api/pipeline.py b/openpype/hosts/nuke/api/pipeline.py
index fd2e16b8d3..fef4a1d401 100644
--- a/openpype/hosts/nuke/api/pipeline.py
+++ b/openpype/hosts/nuke/api/pipeline.py
@@ -18,7 +18,9 @@ from openpype.lib import register_event_callback
 from openpype.pipeline import (
     LegacyCreator,
     register_loader_plugin_path,
+    register_inventory_action_path,
     deregister_loader_plugin_path,
+    deregister_inventory_action_path,
 )
 from openpype.tools.utils import host_tools
 
@@ -105,7 +107,7 @@ def install():
     pyblish.api.register_plugin_path(PUBLISH_PATH)
     register_loader_plugin_path(LOAD_PATH)
     avalon.api.register_plugin_path(LegacyCreator, CREATE_PATH)
-    avalon.api.register_plugin_path(avalon.api.InventoryAction, INVENTORY_PATH)
+    register_inventory_action_path(INVENTORY_PATH)
 
     # Register Avalon event for workfiles loading.
     register_event_callback("workio.open_file", check_inventory_versions)
@@ -131,6 +133,7 @@ def uninstall():
     pyblish.api.deregister_plugin_path(PUBLISH_PATH)
     deregister_loader_plugin_path(LOAD_PATH)
     avalon.api.deregister_plugin_path(LegacyCreator, CREATE_PATH)
+    deregister_inventory_action_path(INVENTORY_PATH)
 
     pyblish.api.deregister_callback(
         "instanceToggled", on_pyblish_instance_toggled)
diff --git a/openpype/hosts/nuke/plugins/inventory/repair_old_loaders.py b/openpype/hosts/nuke/plugins/inventory/repair_old_loaders.py
index 5f834be557..c04c939a8d 100644
--- a/openpype/hosts/nuke/plugins/inventory/repair_old_loaders.py
+++ b/openpype/hosts/nuke/plugins/inventory/repair_old_loaders.py
@@ -1,9 +1,9 @@
-from avalon import api
 from openpype.api import Logger
+from openpype.pipeline import InventoryAction
 from openpype.hosts.nuke.api.lib import set_avalon_knob_data
 
 
-class RepairOldLoaders(api.InventoryAction):
+class RepairOldLoaders(InventoryAction):
 
     label = "Repair Old Loaders"
     icon = "gears"
diff --git a/openpype/hosts/nuke/plugins/inventory/select_containers.py b/openpype/hosts/nuke/plugins/inventory/select_containers.py
index 3f174b3562..d7d5f00b87 100644
--- a/openpype/hosts/nuke/plugins/inventory/select_containers.py
+++ b/openpype/hosts/nuke/plugins/inventory/select_containers.py
@@ -1,8 +1,8 @@
-from avalon import api
+from openpype.pipeline import InventoryAction
 from openpype.hosts.nuke.api.commands import viewer_update_and_undo_stop
 
 
-class SelectContainers(api.InventoryAction):
+class SelectContainers(InventoryAction):
 
     label = "Select Containers"
     icon = "mouse-pointer"
diff --git a/openpype/tools/launcher/actions.py b/openpype/tools/launcher/actions.py
index fbaef05261..546bda1c34 100644
--- a/openpype/tools/launcher/actions.py
+++ b/openpype/tools/launcher/actions.py
@@ -1,6 +1,7 @@
 import os
 
-from avalon import api
+from Qt import QtWidgets, QtGui
+
 from openpype import PLUGINS_DIR
 from openpype import style
 from openpype.api import Logger, resources
@@ -8,7 +9,10 @@ from openpype.lib import (
     ApplictionExecutableNotFound,
     ApplicationLaunchFailed
 )
-from Qt import QtWidgets, QtGui
+from openpype.pipeline import (
+    LauncherAction,
+    register_launcher_action_path,
+)
 
 
 def register_actions_from_paths(paths):
@@ -29,14 +33,15 @@ def register_actions_from_paths(paths):
             print("Path was not found: {}".format(path))
             continue
 
-        api.register_plugin_path(api.Action, path)
+        register_launcher_action_path(path)
 
 
 def register_config_actions():
     """Register actions from the configuration for Launcher"""
 
     actions_dir = os.path.join(PLUGINS_DIR, "actions")
-    register_actions_from_paths([actions_dir])
+    if os.path.exists(actions_dir):
+        register_actions_from_paths([actions_dir])
 
 
 def register_environment_actions():
@@ -46,7 +51,9 @@ def register_environment_actions():
     register_actions_from_paths(paths_str.split(os.pathsep))
 
 
-class ApplicationAction(api.Action):
+# TODO move to 'openpype.pipeline.actions'
+# - remove Qt related stuff and implement exceptions to show error in launcher
+class ApplicationAction(LauncherAction):
     """Pype's application launcher
 
     Application action based on pype's ApplicationManager system.
@@ -74,7 +81,7 @@ class ApplicationAction(api.Action):
     @property
     def log(self):
         if self._log is None:
-            self._log = Logger().get_logger(self.__class__.__name__)
+            self._log = Logger.get_logger(self.__class__.__name__)
         return self._log
 
     def is_compatible(self, session):
diff --git a/openpype/tools/launcher/models.py b/openpype/tools/launcher/models.py
index 85d553fca4..13567e7916 100644
--- a/openpype/tools/launcher/models.py
+++ b/openpype/tools/launcher/models.py
@@ -8,12 +8,13 @@ import time
 import appdirs
 from Qt import QtCore, QtGui
 import qtawesome
-from avalon import api
+
 from openpype.lib import JSONSettingRegistry
 from openpype.lib.applications import (
     CUSTOM_LAUNCH_APP_GROUPS,
     ApplicationManager
 )
+from openpype.pipeline import discover_launcher_actions
 from openpype.tools.utils.lib import (
     DynamicQThread,
     get_project_icon,
@@ -68,7 +69,7 @@ class ActionModel(QtGui.QStandardItemModel):
     def discover(self):
         """Set up Actions cache. Run this for each new project."""
         # Discover all registered actions
-        actions = api.discover(api.Action)
+        actions = discover_launcher_actions()
 
         # Get available project actions and the application actions
         app_actions = self.get_application_actions()
diff --git a/openpype/tools/loader/widgets.py b/openpype/tools/loader/widgets.py
index b14bdd0e93..a4c7d4bd24 100644
--- a/openpype/tools/loader/widgets.py
+++ b/openpype/tools/loader/widgets.py
@@ -7,9 +7,10 @@ import collections
 
 from Qt import QtWidgets, QtCore, QtGui
 
-from avalon import api, pipeline
+from avalon import api
 
 from openpype.pipeline import HeroVersionType
+from openpype.pipeline.thumbnails import get_thumbnail_binary
 from openpype.pipeline.load import (
     discover_loader_plugins,
     SubsetLoaderPlugin,
@@ -863,7 +864,7 @@ class ThumbnailWidget(QtWidgets.QLabel):
         if not thumbnail_ent:
             return
 
-        thumbnail_bin = pipeline.get_thumbnail_binary(
+        thumbnail_bin = get_thumbnail_binary(
             thumbnail_ent, "thumbnail", self.dbcon
         )
         if not thumbnail_bin:
diff --git a/openpype/tools/sceneinventory/view.py b/openpype/tools/sceneinventory/view.py
index c38390c614..2f9996a4ae 100644
--- a/openpype/tools/sceneinventory/view.py
+++ b/openpype/tools/sceneinventory/view.py
@@ -5,13 +5,14 @@ from functools import partial
 from Qt import QtWidgets, QtCore
 import qtawesome
 
-from avalon import io, api
+from avalon import io
 
 from openpype import style
 from openpype.pipeline import (
     HeroVersionType,
     update_container,
     remove_container,
+    discover_inventory_actions,
 )
 from openpype.modules import ModulesManager
 from openpype.tools.utils.lib import (
@@ -487,7 +488,7 @@ class SceneInventoryView(QtWidgets.QTreeView):
         containers = containers or [dict()]
 
         # Check which action will be available in the menu
-        Plugins = api.discover(api.InventoryAction)
+        Plugins = discover_inventory_actions()
         compatible = [p() for p in Plugins if
                       any(p.is_compatible(c) for c in containers)]