Use 'Bridgy Fed' to Connect Mastodon and Bluesky
lifehacker.com
Users on Mastodon can't really talk to users on Bluesky, both of which are increasingly popular alternatives to X. It wasn't possible before Bridgy Fed, anyway. This is a beta service that makes it possible for Bluesky and Fediverse-compatible applications, such as Mastodon, to interact.

The Great Twitter Exodus of 2022 is still happening. It’s just a little…fractured. A lot of X power users migrated to Bluesky early on, which paved the way for a flood of folks to join that service in 2024. Meanwhile, a lot of technically inclined individuals are still hanging out on Mastodon (at least, that’s where I hang out).

Bluesky and Mastodon are both decentralized services, in theory, but users of one service can’t really talk to users on the other—or it wasn’t possible before Bridgy Fed, anyway. It’s a beta service that makes it possible for Bluesky and Fediverse-compatible applications, such as Mastodon, to interact.

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This is where Bridgy Fed comes in. With this service, individual users of either service can opt in to “bridging” their accounts. I tested this out with my friend and Lifehacker alumni Eric Ravenscraft, who hangs out on Bluesky more than me. It worked well—we can now see each other’s posts, like each other’s posts, and even talk to each other, cross-network.

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While this solution works well, there are a few hangups. Chiefly, it only functions if both people bridge their accounts. This means I can’t see any comments from Bluesky users unless they also are bridged, and vice versa: During our little test, a few other Mastodon users responded to my conversation with Eric, but Eric could not see those replies. This make sense if you know how the system works—only comments from bridged users are bridged—but it’s hardly ideal, and can lead to asymmetrical conversations. Unfortunately, the opt-in nature of the bridging service makes this inevitable.

If you are already using Bridgy Fed, how is it working out for you?

  • BobbyTables@discuss.tchncs.deEnglish
    3·
    6 days ago

    Okay, there’s one thing I don’t get with Bluesky: user handles usually are @[name].bsky.social. But with the bridge they end with brid.gy. The account of Ben Stiller is @benstiller.redhour.com. Are those domains different instances? I thought that’s not possible (yet?). How does one get a different domain in the handle?

    • FundMECFSResearch@lemmy.blahaj.zoneEnglish
      4·
      6 days ago

      the .bsky.social is the main instance. The bridge acts as another instance.

      For example one of my friends has a ATProtocol account hosted on the fellas.social instance, so his username is @johndoe.fellas.social

      it basically works like lemmy and mastodon in that regard

      The main difference with lemmy/fediverse is that instances don’t actually host the software, they just host the database. So it’s plug and play into any open source ATProtocol software. This dramatically decreases server loads and makes hosting an instance or your data cheaper but also means that software is more intensive to host.

    • chameleon@fedia.io
      3·
      6 days ago

      You go to the settings and verify it. You don’t have to host anything, just verify that you own the domain via text file or DNS record and choose to set it as your handle. Bluesky’s ATProto has a couple extra layers of indirection and it’s very easy to get a custom handle as a result.

      The downside of this setup is that running your own complete network is completely impossible. If you want to follow theonion.com, anyone can find did:plc:a4pqq234yw7fqbddawjo7y35 in the DNS without too much work. That’s the identifier for The Onion’s Bluesky account, and even if they swapped back to .bsky.social, that ID number would stay. But that DID tells you absolutely nothing about where the data is currently hosted.

      So how do you figure that out? Well, you register it with https://plc.directory/ which is ran by Bluesky and cannot currently be replaced. There’s fancy cryptography involved that makes it hard for them to spoof data, but they are perfectly capable of simply not giving any data out for any given DID.

    • underscores@lemmy.dbzer0.comEnglish
      3·
      6 days ago

      Identities are somewhat decentrallized, but it’s pretty different from ActivityPub. People can host user data separately, but it isn’t really an instance. It is technically possible to have other relays (basically instances), but requires handling all the data on bluesky to connect to it. It would cost probably 50-100k USD/year, and that number will go up as more people join or if there’s more relays.