The AT Protocol logo, an @ symbol with a blue sky and clouds in the background

The AT Protocol

Social networking technology created by Bluesky


The Social Internet

The AT Protocol is a networking technology created to power the next generation of social applications. The initial reference application,, provides a global-scale microblogging experience.

Federated social

Connect with anyone on any service that's using the AT Protocol.

Algorithmic choice

Control how you see the world through an open market of algorithms.

Portable accounts

Change hosts without losing your content, your follows, or your identity.

Join the Federated Sandbox

No waitlist or invite code required to join this self-hosted sandbox environment. The production network will open to federation soon.

Guidelines and Instructions