Needed to get it out of my head. @Kuba Suder 🇵🇱🇺🇦 has a more detailed write-up [mackuba.eu/2025/08/20/i...](

Introduction to AT Protocol

Walkthrough of the various parts and concepts in Bluesky's AT Protocol (ATProto), the types of servers involved and how it all fits together

) (and gave me the pipes description for relay) But I wanted a simplified visual of the layers and where I think things are at the moment. I have some other things to sort and add still. https://shiitake.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:tbr4cunn6r4hox73ybzjfwt3&cid=bafkreig5zy6ngk2gwq3ypdzvcfpoj4c3pnbdamra7bgrr2lch6wo5fdfpe