Developed by Bluesky
The AT Protocol is a networking technology created to power the next generation of social applications. The initial reference application, bsky.app,provides a global-scale microblogging experience.
The Authenticated Transfer Protocol, aka atproto, is a federated protocol for large-scale distributed social applications. This document will introduce you to the ideas behind the AT Protocol.
From the Protocol Overview
The Authenticated Transfer Protocol (AT Protocol or atproto) is a generic federated protocol for building open social media applications. Some recurring themes and features are:
- self-authenticating data and identity, allowing seamless account migrations and redistribution of content
- design for "big world" use cases, scaling to billions of accounts
- delegated authority over application-layer schemas and aggregation infrastructure
- re-use of existing data models from the dweb protocol family and network primitives from the web platform
From the Specification