Comment on Red Dwarf and Constellation: could we skip the Bridge?

lizard_socks@lemmy.world ⁨12⁩ ⁨hours⁩ ago

I was recently playing around with Constellation and - partly as a statement but mostly as a personal challenge - used it to build ATProto notifications support into my ActivityPub enabled web app (writeup here, I’d post from that but I think lemmy.world blocks it since I sent it too many invalid activities or whatever).

I already had the ability to follow someone on atproto by resolving their handle and hitting their PDS directly (without authentication - that’s all public), and I also turned Bridgy Fed on. With Constellation, I was able to (a) find the bridged atproto version of each ActivityPub post I made, and (b) find any likes, replies, or reposts related to each post.

When a Bluesky post hits my inbox and I click on it, my app checks to see if that user is also using Bridgy Fed, and if they are, it shows me their post over ActivityPub instead, so I can like or reply to it.

More broadly, it might be interesting if someone made an app that used a PDS as its primary datastore, but also had ActivityPub S2S support built into it. I know wafrn can do both protocols, but I think in its case it mirrors posts to a separate PDS kind of like you’re describing.

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