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If you run their service locally it displays the connected account and you can interact with the app.

Fairly arrogant to assume port 8080 is unused for other things on localhost.

It's just the default, it can be changed.

And it wasn't free on my host me either :). Indeed 8080 is maybe not the best port to select for this app, because it is more likely used than "some other" port.

local-first [1] software ;)

That is the default port for `radicle-httpd`: an HTTP API that would allow you to authenticate (using your public/private key pair, that is stored on your machine), so that you can perform actions on the web-based interface as a specific user, through your local radicle node.

[1] - https://www.inkandswitch.com/local-first/

Maybe that is where you would have your local copy of Radicle running?