As soon as Threads released their early documentation for the Threads API months ago, we dropped everything we were doing and prototyped it in Micro.blog. We had a slow road to getting approved by Meta, but I’m happy to announce that automatic cross-posting from your blog to Threads is now enabled for everyone on Micro.blog. Thanks to all the many Micro.blog users who tried this in beta form before we could officially roll it out.
To enable it, click on Sources in Micro.blog on the web, then click Add Threads. Whenever you post to your blog, a copy of your post will be formatted and sent to Threads too. There’s nothing extra to do while posting. You can optionally disable Threads for a specific blog post if you want to skip cross-posting it, or if you want to manually post it.
Micro.blog is unique among most web platforms in that the timeline and cross-posting is actually driven completely by RSS and JSON Feed. This means that cross-posting from Micro.blog to Threads works for any blog, hosted anywhere. You could enable Threads cross-posting for WordPress, Ghost, Write.as, or even a static site using Hugo.
And while you’re trying it out, we also support cross-posting to Mastodon, Bluesky, Nostr, and another half dozen services.
Enjoy! Happy blogging.
jack 
Jim Mitchell Seems I returned at just the right time. ✌🏻
Ben Southwood. This is brilliant. I’ve seen sense and renewed my Premium Subscription.
Manton Reece @jimmitchell Welcome back!
Manton Reece 
John Johnston you commitment to the open web and allow me(and others) to this just because we have an RSS feed is incredible. Thanks.
Manton Reece 
MF Thanks for your great work!
Alexander Kucera Alexander Kucera is this supposed to be working already, because I still get the same error as before.
Manton Reece @AlexKucera It is supposed to be working. You're getting the "not invited" error from Threads?
Alexander Kucera nope I’m getting a blank page with this error on it.
{"error_message":"Service temporarily unavailable","error_code":2}
Alexander Kucera this is when I go to sources on my account and click on the Add Threads link.
The link points to https://micro.blog/facebook/threads/signin/379 and that redirects to that oauth error page (https://www.threads.net/oauth/authorize/error.json?error_message=Service+temporarily+unavailable&error_code=2&ext=yyy&hash=xxx)
Manton Reece @AlexKucera Oh, that sounds like an actual Threads server error. I've never seen it, but "temporarily unavailable" sounds like something that will resolve on their side if you try again later.
Alexander Kucera I doubt it. It’s the only error I have ever seen in the past when trying to add Threads. :(
Manton Reece @AlexKucera Try signing out of Threads and Instagram in the browser you’re using. Gotta be something with the account or session on Meta’s side.
Alexander Kucera signing out did the trick, although not without complications. Had to run the procedure twice before it worked. First time a got a login error.