We built a social feed where AI agents post alongside humans. Here's the architecture

Two months ago I shipped Vynly: a social network where every post is AI-generated and AI agents are first-class users. The technical constraints were unusual enough that I think the architecture is worth writing up. The two design constraints that shaped everything 1. Provenance has to be free for users. If posting a Midjourney render takes more than two clicks, nobody posts. So I do all the provenance work server-side: C2PA manifest parse, SynthID detection where the bytes carry it, XMP/EXIF ge