ActivityPub over ATProto

4 hours ago

The open social media space is often divided into factions, similar to political movements, where people feel compelled to pick sides instead of collaborating.
ActivityPub could potentially run atop the AT Protocol Personal Data Server (PDS) with some modifications, leveraging ATProto's pluggable identity and signed data repositories for user agency.
ATProto is a generic toolbox for building social media applications, not just Bluesky, with open standards intended for the com.atproto routes.
ActivityPub uses actor documents to specify API endpoints via URLs, allowing indirection to point to an ATProto PDS, though issues like XRPC method limitations and identity alignment need bridging.
Combining ActivityPub and ATProto could break social media siloes by merging ActivityPub's URL-based federation with ATProto's user-centric data control and credible exit guarantees.

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