Your inventory is managed by the server so there is no known way to hack your tool's durability.
IS there anyway to make a mod for Multiplayer which allows you to repair your tools or is there any specific hacked client that allows you to do this.
Your inventory is managed by the server so there is no known way to hack your tool's durability.
^
You can only get permissions to repair the tool , but you can't do it yourself. Server owners usually allow donators to repair their stuff.