A single agent is straightforward. Several agents that have to agree on state, hand work to each other and fail safely are not. Foundry is the runtime for that second case.
Status
In development. There is nothing to install yet, and this page will say so until that changes. Building in public means publishing the gaps as well as the releases.
USB is the studio's product that is live today. To follow Foundry, watch github.com/PeepSick or get in touch.
Where it fits
USB installs skills, Foundry builds agents, LeoSIS powers the intelligence underneath. The pieces are designed to stack but not to require each other — Foundry will not oblige you to adopt the rest.