<![CDATA[Tracking RFC 9421 Adoption]]>

<![CDATA[Tracking RFC 9421 Adoption]]>One of the big pain points for ActivityPub developers is supporting HTTP Signature in their servers. The Fediverse uses an out-dated draft standard, draft cavage 12. There's a helpful ActivityPub and HTTP Signatures report from the SocialCG, but it's still kind of a slog.

Some server software has begun the pivot to the release version using double-knocking, capability discovery, or something else.

To track support for RFC 9421, I added an adoption matrix to the ActivityPub HTTP Signature repo. I grabbed all the software listed on FediDB, and laid out a matrix of whether it accepts RFC 9421 signatures for GET and POST or sends RFC 9421 for GET and POST. I also included a way to find relevant bug-tracker issues.

https://swicg.github.io/activitypub-http-signature/RFC9421

It would be a huge help to get some more eyes and data on this adoption matrix. If you know about a Fediverse server package's support for RFC 9421, including your own, please make a PR against the RFC9421.md file in the swicg/activitypub-http-signature repo.

Thanks!

]]>https://forum.ieu.app/topic/ce00d219-5f0f-469e-9f0f-4e600cbc642e/tracking-rfc-9421-adoptionRSS for NodeSun, 06 Sep 2026 04:28:53 GMTSun, 16 Aug 2026 18:11:05 GMT60