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diff --git a/game/client/econ/tool_items/custom_texture_cache.h b/game/client/econ/tool_items/custom_texture_cache.h
new file mode 100644
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+++ b/game/client/econ/tool_items/custom_texture_cache.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef CUSTOM_TEXTURE_CACHE_H
+#define CUSTOM_TEXTURE_CACHE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#ifndef GC_CLIENTSYSTEM_H
+	#include "gc_clientsystem.h"
+#endif
+
+class IGameSystem;
+class ITexture;
+class CEconItemView;
+
+/// Given a UGC cloud ID of a custom image, return a VGUI texture handle
+/// that can be used for drawing.  Returns 0 on failure
+int GetCustomTextureGuiHandle( uint64 hCloudId );
+
+//-----------------------------------------------------------------------------
+// Purpose: Job to do the async work of uploading the file to the CDN (if
+// necessary) and sending the tool request message
+//-----------------------------------------------------------------------------
+class CApplyCustomTextureJob : public GCSDK::CGCClientJob
+{
+public:
+
+	CApplyCustomTextureJob( itemid_t nToolItemID, itemid_t nSubjectItemID, const void *pPNGData, int nPNGDataBytes );
+
+protected:
+	char	m_chRemoteStorageName[ MAX_PATH ];
+
+	virtual bool BYieldingRunGCJob();
+	virtual EResult YieldingRunJob();
+	virtual EResult YieldingFindFileIncacheOrUploadFileToCDN();
+	virtual EResult YieldingApplyTool();
+
+	/// The file data, in PNG format
+	CUtlBuffer m_bufPNGData;
+
+	/// Item that we are applying the texture onto
+	itemid_t m_nSubjectItemID;
+
+	/// Tool that is being applied and will be consumed
+	itemid_t m_nToolItemID;
+
+	/// Cloud file ID
+	uint64 m_hCloudID;
+
+private:
+	void CleanUp();
+};
+
+/// get interface to the game system responsible for managing the custom texture cache
+IGameSystem *CustomTextureToolCacheGameSystem();
+
+/// A few internal things that really shouldn't be public
+namespace CustomTextureSystem
+{
+
+/// If we're auditioning (while selecting a file to apply on a model),
+/// what texture should we display?
+extern ITexture *g_pPreviewCustomTexture;
+
+/// What is the econ item that is being auditioned and so should
+/// use the preview texture
+extern CEconItemView *g_pPreviewEconItem;
+
+/// Do we need to update the bits in the rendering system?
+extern bool g_pPreviewCustomTextureDirty;
+
+extern const char k_rchCustomTextureFilterPreviewImageName[];
+extern const char k_rchCustomTextureFilterPreviewTextureName[];
+
+}
+
+#endif // CUSTOM_TEXTURE_CACHE_H