this post was submitted on 24 Nov 2023
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Technical question: how can I find out what type of server (Mastodon/Pixelfed/Firefish/Peertube/etc) a site is running on? (lemmy.cat)
submitted 11 months ago by retiolus@lemmy.cat to c/fediverse@lemmy.ml
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While working on Fedimojis, I'd like to check that the link entered by the user is actually a Mastodon server, to avoid bugs or loading thousands of emojis from Pixelfed instances that don't distinguish between local and external emojis.

How can I do this?

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[–] maddy@lemmy.blahaj.zone 7 points 11 months ago* (last edited 11 months ago) (1 children)

Most software responds to /.well-known/nodeinfo with this info iirc

[–] retiolus@lemmy.cat 8 points 11 months ago

Okay! So you first need to check /.well-known/nodeinfo to get /nodeinfo/2.0.json!

In the case of Pixelfed it's in /api/nodeinfo/2.0.json

[–] aliceif@mkultra.x27.one 6 points 11 months ago

@retiolus@lemmy.cat pretty much all software should be implementing nodeinfo: https://github.com/jhass/nodeinfo
usually reachable via HTTP on an endpoint like url/nodeinfo/2.0.json