[onli]

In many jurisdictions you can't be bound by an agreement if not explicitly agreeing. It most likely boils down to where Gervasio lives. In my country for example I'd be certain Slack would have no standing at all with this. Though even in the US Slack would have to pull an Oracle to win this (which, well, is the risk that they might). Good reminder though in which moral category of enterprises Slack has to be sorted in.

It does not matter, he does not want to fight this.

[benatkin]

It might be more than just a EULA. Often to sign up for an API key, you have to go through a bit more explicit agreement to a ToS than there is in a standard funnel. There's also a bit more of an expectation that people will actually read them (and are competent to understand them).

[jjeaff]

This extension doesn't use the API. It just injects some JavaScript. Just like every adblockers and password manager does.

[benatkin]

I know. I think the author might have been interested in the API and signed up separately, though.