OX Inventory

1. Go to ox_inventory/modules/items and paste this code inside server.lua right before the return Items line at bottom:

AddEventHandler('inventory:refresh',function()
	local success, items = pcall(MySQL.query.await, 'SELECT * FROM av_items')
	if success and items and next(items) then
		local resource = GetCurrentResourceName()
		local path = GetResourcePath(resource)
		local dump = {}
		for i = 1, #items do
			local item = items[i]
			if not ItemList[item.name] then
				item.close = item.closeonuse == nil and true or item.closeonuse
				item.stack = item.stackable == nil and true or item.stackable
				item.description = item.description
				item.weight = item.weight or 0
				dump[i] = item
				if item.image then
					PerformHttpRequest(item.image, function (errorCode, resultData, resultHeaders)
						if errorCode >= 200 and errorCode < 300 then
							local image = assert(io.open(path..'/web/images/'..item.name..'.png', "wb"))
							image:write(resultData)
							image:flush()
							image:close()
						end
					end)
				end
			end
		end
		if table.type(dump) ~= "empty" then
			local file = {string.strtrim(LoadResourceFile(shared.resource, 'data/items.lua'))}
			file[1] = file[1]:gsub('}$', '')
			local itemFormat = [[
				['%s'] = {
					label = '%s',
					weight = %s,
					stack = %s,
					close = %s,
					description = %s
				},
			]]
			local fileSize = #file
			for _, item in pairs(dump) do
				local formatName = item.name:gsub("'", "\\'"):lower()
				if not ItemList[formatName] then
					fileSize += 1
					file[fileSize] = (itemFormat):format(formatName, item.label:gsub("'", "\\'"), item.weight, item.stack, item.close, item.description and ('"%s"'):format(item.description) or 'nil')
					ItemList[formatName] = item
				end
			end
			file[fileSize+1] = '}'
			SaveResourceFile(shared.resource, 'data/items.lua', table.concat(file), -1)
		end
	end
end)

3. Join Discord if you need help with anything, enjoy the script <3.

Note: You have to wait for a server restart after you register a new item.