Is it against TOS to use this tool?

[Risvertasashi]

Saw this from one live stream (Light DC), is it ok to use this tool for zooming (don't know how it's called)?

https://imgur.com/a/REqDbGq

All third party tools/mods/addons/etc are forbidden by the TOS.

If you use such a thing, it's advised that you keep it quiet and don't show off anywhere it can be connected to your character name. The usual example is parsing: SE doesn't scan your computer, you 'can' parse for self improvement and they'll never know, but it is against the tos and if you use parsing data to, for example, harass someone in game about low performance, SE will know you used it and broke the TOS, and can action your account both for the tool and for harassment.