Where it's at

last updated: Oct 03, 2025

https://overreacted.io/where-its-at/

Dan Abramov's explainer on the at:// protocol, and how to resolve a URI to an actual resource.

I'm honestly still not sure that I trust bsky et al, but I'm on there as @billmill.org and it was neat to run some curls to find my content.

↑ up