Fedify is a TypeScript framework for building ActivityPub servers. It implements federation details such as HTTP Signatures, JSON-LD processing, WebFinger, inbox and outbox routing, and activity delivery.

Fedify 2.4.0 is a minor release with an unusually long changelog. The main addition is support for FEP-ef61 portable objects: a Fedify server can now host actors whose identity is a DID rather than a domain, serve and verify their signed objects, and consume the portable objects of other servers. The release also adds an API for application-defined background tasks, the ActivityPub Media Upload extension, a hook that reports how every inbox request was authenticated and handled, and 410 Gone tombstones for deleted objects. Several defaults change to limit what a hostile peer can make Fedi…