diff --git a/PLATFORM_IDs.md b/PLATFORM_IDs.md
new file mode 100644
index 0000000..c58dbc4
--- /dev/null
+++ b/PLATFORM_IDs.md
@@ -0,0 +1,82 @@
+### PLATFORM ID LIST
+
+Platform ID list for GOG Galaxy 2.0 Integrations
+
+| ID | Name |
+| --- | --- |
+| steam	| Steam |
+| psn	| PlayStation Network |
+| xboxone	| Xbox Live |
+| generic	| Manually added games |
+| origin	| Origin |
+| uplay	| Uplay |
+| battlenet	| Battle.net |
+| epic	| Epic Games Store |
+| bethesda	| Bethesda.net |
+| paradox	| Paradox Plaza |
+| humble	| Humble Bundle |
+| kartridge	| Kartridge |
+| itch	| Itch.io |
+| nswitch	| Nintendo Switch |
+| nwiiu	| Nintendo Wii U |
+| nwii	| Nintendo Wii |
+| ncube	| Nintendo Game Cube |
+| riot	| Riot |
+| wargaming	| Wargaming |
+| ngameboy	| Nintendo Game Boy |
+| atari	| Atari |
+| amiga	| Amiga |
+| snes	| SNES |
+| beamdog	| Beamdog |
+| d2d	| Direct2Drive |
+| discord	| Discord |
+| dotemu	| DotEmu |
+| gamehouse	| GameHouse |
+| gmg	| Green Man Gaming |
+| weplay	| WePlay |
+| zx	| Zx Spectrum PC |
+| vision	| ColecoVision |
+| nes	| NES |
+| sms	| Sega Master System |
+| c64	| Commodore 64 |
+| pce 	| PC Engine |
+| segag	| Sega Genesis |
+| neo	| NeoGeo |
+| sega32	| Sega 32X |
+| segacd	| Sega CD |
+| 3do	| 3DO Interactive  |
+| saturn	| SegaSaturn |
+| psx	| Sony PlayStation |
+| ps2	| Sony PlayStation 2 |
+| n64	| Nintendo64 |
+| jaguar	| Atari Jaguar |
+| dc	| Sega Dreamcast |
+| xboxog	| Original Xbox games |
+| amazon	| Amazon |
+| gg	| GamersGate |
+| egg	| Newegg |
+| bb	| BestBuy |
+| gameuk	| Game UK |
+| fanatical	| Fanatical store |
+| playasia 	| PlayAsia |
+| stadia	| Google Stadia |
+| arc	| ARC |
+| eso	| ESO |
+| glyph	| Trion World |
+| aionl	| Aion: Legions of War |
+| aion	| Aion |
+| blade	| Blade and Soul |
+| gw	| Guild Wars |
+| gw2	| Guild Wars 2 |
+| lin2	| Lineage 2 |
+| ffxi	| Final Fantasy XI |
+| ffxiv	| Final Fantasy XIV |
+| totalwar	| TotalWar |
+| winstore	| Windows Store |
+| elites	| Elite Dangerous |
+| star	| Star Citizen |
+| psp	| Playstation Portable |
+| psvita	| Playstation Vita |
+| nds	| Nintendo DS |
+| 3ds	| Nintendo 3DS |
+
diff --git a/README.md b/README.md
index fcd0775..4330b1f 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,12 @@ The provided features are:
     - receiving and sending chat messages
 - cache storage
 
+## Platform Id's
+
+Each integration can implement only one platform. Each integration must declare which platform it's integrating.
+
+[List of possible Platofrm IDs](PLATFORM_IDs.md)
+
 ## Basic usage
 
 Eeach integration should inherit from the :class:`~galaxy.api.plugin.Plugin` class. Supported methods like :meth:`~galaxy.api.plugin.Plugin.get_owned_games` should be overwritten - they are called from the GOG Galaxy client in the appropriate times.
@@ -58,7 +64,8 @@ if __name__ == "__main__":
 The client has a built-in Python 3.7 interpreter, so the integrations are delivered as python modules.
 In order to be found by GOG Galaxy 2.0 an integration folder should be placed in [lookup directory](#deploy-location). Beside all the python files, the integration folder has to contain [manifest.json](#deploy-manifest) and all third-party dependencies. See an [examplary structure](#deploy-structure-example).
 
-### <a name="deploy-location"></a> Lookup directory:
+### Lookup directory
+<a name="deploy-location"></a>
 - Windows:
 
     `%localappdata%\GOG.com\Galaxy\plugins\installed`
@@ -67,7 +74,8 @@ In order to be found by GOG Galaxy 2.0 an integration folder should be placed in
 
     `~/Library/Application Support/GOG.com/Galaxy/plugins/installed`
 
-### <a name="deploy-manifest"></a> Manifest
+### Manifest
+<a name="deploy-manifest"></a> 
 Obligatory JSON file to be placed in a integration folder.
 
 ```json
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 05f97f7..4455599 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -7,6 +7,7 @@ GOG Galaxy Integrations Python API
 
    Overview <overview>
    API <galaxy.api>
+   Platform ID's <platforms>
 
 Index
 -------------------
diff --git a/docs/source/overview.rst b/docs/source/overview.rst
index cb8accb..ea506a8 100644
--- a/docs/source/overview.rst
+++ b/docs/source/overview.rst
@@ -5,3 +5,11 @@
 
 .. mdinclude:: ../../README.md
    :start-line: 6
+   :end-line: 26
+   
+.. excluding Platforms Id's link
+
+:ref:`platforms-link`.
+
+.. mdinclude:: ../../README.md
+   :start-line: 28
diff --git a/setup.py b/setup.py
index f75584e..6416391 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name="galaxy.plugin.api",
-    version="0.34",
+    version="0.35.1",
     description="GOG Galaxy Integrations Python API",
     author='Galaxy team',
     author_email='galaxy@gog.com',
diff --git a/src/galaxy/api/plugin.py b/src/galaxy/api/plugin.py
index 0b7f2a2..b876c57 100644
--- a/src/galaxy/api/plugin.py
+++ b/src/galaxy/api/plugin.py
@@ -57,7 +57,12 @@ class Plugin:
         # internal
         self._register_method("shutdown", self._shutdown, internal=True)
         self._register_method("get_capabilities", self._get_capabilities, internal=True)
-        self._register_method("initialize_cache", self._initialize_cache, internal=True)
+        self._register_method(
+            "initialize_cache",
+            self._initialize_cache,
+            internal=True,
+            sensitive_params="data"
+        )
         self._register_method("ping", self._ping, internal=True)
 
         # implemented by developer
@@ -466,7 +471,8 @@ class Plugin:
         """
         self._notification_client.notify(
             "push_cache",
-            params={"data": self._persistent_cache}
+            params={"data": self._persistent_cache},
+            sensitive_params="data"
         )
 
     # handlers