Delivered 2026-09-27 by sp-agents (web research, Microsoft Learn/Support primary sources): plans/spway/12a/report.md. A SharePoint agent is a JSON .agent file (the declarative agent manifest v1.x: name, description, instructions <= 8000, capabilities, up to 12 conversation starters, actions, disclaimer) in Site Assets > Copilots; scoped by items_by_sharepoint_ids / items_by_url with limits (100 SP files/folders/sites, 1 list, 4 web URLs); permission-trimmed; no site approval needed, an optional Approved folder; the tenant Agent Registry (publisher type, platform type incl. 'SharePoint', ownerless/at-risk/pending states, Entra Agent ID). Copilot in SharePoint GA 2026-09-30: everyday vs advanced (Copilot Credits) tiers; agents create pages, lists, sites, run deterministic workflows; the Knowledge Agent autofills metadata (= our AutofillListener). Mapping table in the report: our ActorProfile + People row + Composition + SHAREPOINT.md already hold the manifest's content; borrow the FILE (a rendered .agent projection), the per-site Copilots library and the registry vocabulary.