November 4, 2026

Mastra releases published November 4, 2026. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Highlights Knowledge v2: page-tree model, richer tools, and server-side sync APIs Knowledge is now a first-class page tree (pages/notes/pins) with major tool upgrades: knowledge list , line/section/grep-style reads in knowledge read , list pinning ( kind: 'list' ), and a link index for counting/listing links . Apps can also sync external content via server APIs like knowledge.upsertPage() / removePage() and note upserts, with optional vector/hybrid search and chunked embeddings for very long pages. Knowledge Explorer + read-only Knowledge HTTP/JS client APIs (and SSE change stream) Mastra Server now offers opt-in read-only Knowledge routes (tree/page/graph/search/activity) plus an SSE events stream, with matching listKnowledge() / getKnowledge() APIs in @mastra/client-js . These routes are scope-gated (and FGA-aware) and enable building Knowledge browsing UIs outside Studio, including…

• Review the official Mastra releases release notes before upgrading.
• Check compatibility, migration, and security notes against your current agent stack.
• Run focused regression tests before production rollout.