import bpy class KH_OP_readthedocs(bpy.types.Operator): """Check online documentation""" bl_idname = "kh.readthedocs" bl_label = "Online documentation" bl_description = "Go to Khanat Development Guide" bl_options = {"REGISTER", "UNDO"} def invoke(self, context, event): return self.execute(context) def execute(self, context): bpy.ops.wm.url_open('INVOKE_DEFAULT', url='https://git.numenaute.org/khaganat/mmorpg_khanat/khanat_gamedev_guide') return {"FINISHED"}