How can one map an AP URL to AT URL?

[saschanaz]

There's bsky.brid.gy/r that can do AT->AP, but is the reverse possible?

[snarfed]

Hi! We do have URLs for converting between the networks' machine-readable formats. If you append a bridged AP object id to https://ap.brid.gy/convert/bsky/, eg https://ap.brid.gy/convert/bsky/https://indieweb.social/users/snarfed/statuses/114444055605067165 , you'll get the JSON ATProto record. Same with other supported networks, eg https://ap.brid.gy/convert/web/https://indieweb.social/users/snarfed/statuses/114444055605067165 returns microformats2 HTML.

We don't have a corollary for translating to a user-facing URL though, eg on bsky.app. The /r/ URLs are a special case to satisfy the annoying historical tendency of some (most?) fediverse software to require objects' id and url to be on the same domain as their authors' id (#16, #32).

[maxbanister]

Is the AT URI known at any point when creating the bridged post? Like, does sending a Create activity to the Bridgy Bluesky bot return a 201 response with a Location header set to the URI of the bridged post?

[snarfed]

Hi! Sadly no, BF handles activities async, like most other fediverse software. The delay is usually only seconds to 10s of seconds though, and after it's done, you can get the Bluesky post from https://atproto.brid.gy/xrpc/com/atproto/repo/listRecords?repo=...&collection=app.bsky.feed.post&reverse=true, I think it should be the first result.

[maxbanister]

Thanks!

For anyone else who stumbles upon this, the URI endpoint I used to get this to work was:
https://atproto.brid.gy/xrpc/com.atproto.repo.listRecords?repo=< my site URL or DID >&collection=app.bsky.feed.post

I also had to drop the reverse query param:
{ "error": "InvalidRequest", "message": "reverse not supported yet" }

It looks like the result contains the Content ID hash and at:// URI, in addition to the info you get from the /convert/ API. You can use the at:// to get the HTTP URI fairly easily #2523

I'll have to mull over how to fetch this information at the right moment, but I'm glad there's a way at least to find it!

[snarfed]

https://fed.brid.gy/docs#api is also relevant here!