I’ve tried to log into Lemmy through multiple apps using my Mastodon username and instance, but I get errors.

I thought federated accounts were supposed to be usable across applications.

Am I misunderstanding?

  • oatmilkmaid@possumpat.io
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    11 months ago

    Accounts reside on the instance they belong to. Same way you can’t use your gmail account to access your outlook account.

  • jacaw@lemmy.ml
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    11 months ago

    Unfortunately, this doesn’t work, but Pixelfed just added a “log in with Mastodon” option yesterday. It’s not impossible that it’ll come to lemmy one day.

  • a_mac_and_con@kbin.social
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    11 months ago

    There is a misunderstanding here. The fediverse can communicate with each other, but you can’t sign in with one anywhere. Consider it like an email. You can’t use a Yahoo email to sign into a Gmail account, but you can send emails to anyone, regardless of sharing the same @.

    • caseinpointOP
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      11 months ago

      Got it, but I figured if I’m trying to log into the application, the credentials from my Mastodon account would be authenticated against my instance there.

      Like having a email client on your computer. You should be able to authenticate against your Yahoo, Outlook, or Google.

      I thought federated accounts would utilize the same authentication regardless of platform because they use the ActivityPub protocol. Maybe I need to learn more about it. Based on the information about that page it looks like you can auth into Pixelfed and PeerTube using your Mastodon credentials.

      I would love it if eventually there could be SSO across Federated platforms such as Lemmy.

      Additionally, from the Lemmy wiki page it says it is compatible with Mastodon and PeerTube. I guess I would like to understand how they are compatible.

      Lemmy instances are federated with each other, allowing a user on a given instance to participate in a “community” on another Lemmy instance without having to create an account on the other instance;[4] and with other instances in the Fediverse that use different software. ActivityPub is the protocol used to allow Lemmy instances to operate as a federated social network. It allows users to interact with compatible platforms including Mastodon and PeerTube.[15]

      • a_mac_and_con@kbin.social
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        11 months ago

        Yeah, I get you. But unfortunately no. They don’t use the same authentication, they just connect information on the other end. It’s not like the sites that allow you to sign in by using another account. You sign in Mastodon with a Mastodon account an Lemmy through Lemmy. I can’t use my Kbin account to sign into either of those–I just have a separate Mastodon account.

          • thegiddystitcher@lemm.ee
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            11 months ago

            Hey, so here’s how it works in theory.

            On mastodon, Lemmy communities (not sure about Kbin magazines) show up as groups. But you have to replace the ! in their address with a @ to find them.

            For example I can search for the Star Trek community (!startrek@startrek.website ) on Mastodon by searching for @startrek@startrek.website and follow it like so:

            New posts and comments will then show up in my Mastodon feed as boosts. I can reply to them and it’ll appear on the Lemmy side too.

            You can even make your own Lemmy posts from Mastodon, the first line of your toot will become the post title and the rest will be the body, you just need to tag the “group” in there somewhere.

            Where it gets complicated and my knowledge falls down is that it seems like you can’t always find every community by searching like the above example, and I’m not sure why. For example I just tried @meta@lemm.ee and had no luck. BUT some that I tried to find yesterday to no avail are now showing up this morning, so maybe there’s just a delay in them getting indexed the first time you search for them 🤷‍♀️

            • caseinpointOP
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              11 months ago

              Awesome. Looks like I’m able to find the communities but none of the old posts show.

              Looking forward to see how this goes with new posts!

              Thanks for explaining!

          • PupBiru@kbin.social
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            11 months ago

            i thought the way it worked was that communities and users in lemmy/kbin have an @ on mastodon, and that users posts in a community show up as a toot on their user account with an @ for the community, and then communities retoot and anyone can reply to those toots?

            … but that doesn’t seem to be it: at least right now, communities and users show no toots on my instance

            however you should be able to search for and find communities and instances as accounts at least:

            @caseinpoint@reddthat.com
            @meta@kbin.social
            
            

            (first being the user that posted this thread, the second being a kbin community)

            both of these are findable on mastodon; also tried a lemmy community but that didn’t seem to work?