[New Work Item] ActivityPub/Fediverse interoperability

[elf-pavlik]

This is a follow-up to https://forum.solidproject.org/t/integrating-activitypub-within-solid-specs/8355
Proposed for CG weekly meeting 2025-01-29: https://www.w3.org/events/meetings/fdfa6c29-c3b2-4106-9170-e6fd8bc52202/20250129T140000/

Initial editors:

• @srosset81
• @elf-pavlik

The aim is to

• draft a CG report specifying how Soild and Fediverse can interoperate
• gather implementation experience
• provide feedback to Linked Web Storage WG on how its deliverables can interoperate with the Fediverse

Prior work:

• Aligning authentication
• Solid and Fediverse solid#242
• AS2 Integration / support for 'application/activity+json' content type solid#83
• Resource paging #230

[csarven]

Additional prior documentation / related work / implementation considerations / joint CG meeting:

• https://www.w3.org/TR/social-web-protocols/
• ActivityPub SocialCG reaching out to Solid solid-contrib/external-interop-panel#4 (comment)
• https://solid.github.io/notifications/protocol
• https://solid.github.io/httpsig/
• Implement ActivityPub nodeSolidServer/node-solid-server#621
• Implement ActivityPub CommunitySolidServer/CommunitySolidServer#1508
• https://github.com/solid/specification/blob/main/meetings/2023-12-05.md

[melvincarvalho]

Interested in this topic. Just noting that it’s not entirely new—it has been worked on for at least seven years.

[elf-pavlik]

it has been worked on for at least seven years

@melvincarvalho could you please share links to reports/documentation and implementations produced in those years?