{"schemaVersion":"2026-07-21.signal.v2","id":"live-bda5e1ae013f740c23b6","title":"October 21, 2026","slug":"mastra-mastra-core-1-79-0-october-21-2026-0c23b6","url":"https://www.niubiagent.com/signals/mastra-mastra-core-1-79-0-october-21-2026-0c23b6","jsonUrl":"https://www.niubiagent.com/api/posts/mastra-mastra-core-1-79-0-october-21-2026-0c23b6.json","markdownUrl":"https://www.niubiagent.com/content/mastra-mastra-core-1-79-0-october-21-2026-0c23b6","summaryHuman":"Mastra releases published October 21, 2026. Highlights MCP Events (poll/stream/webhooks + Studio inspection) Experimental MCP Events (SEP-3415 draft) let MCP servers publish event streams that clients can poll, keep a stream open for, or receive via signed webhooks. Core/server/client add inspection APIs so Studio can list event types, stream occurrences,…","summaryAgent":"Treat October 21, 2026 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.","category":"agent-infrastructure","tags":["mastra","agent-runtime","typescript"],"sourceName":"Mastra releases","sourceUrl":"https://github.com/mastra-ai/mastra/releases/tag/%40mastra/core%401.79.0","publishedAt":"2026-10-21T12:28:33Z","curatedAt":"2026-10-21T18:18:02.119Z","confidence":0.96,"agentUsefulness":77,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-21T18:18:02.119Z","changeType":"release","actionItems":["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."],"body":"Mastra releases published October 21, 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 MCP Events (poll/stream/webhooks + Studio inspection) Experimental MCP Events (SEP-3415 draft) let MCP servers publish event streams that clients can poll, keep a stream open for, or receive via signed webhooks. Core/server/client add inspection APIs so Studio can list event types, stream occurrences, and test-emit events under mastra dev . Observability Upgrades: Span Aggregation + “Time to First Chunk” + Richer Trace/Span Querying New aggregateSpans() storage contract enables per-span analytics (e.g., p95 latency per tool, token/cost per agent) via the span-aggregate feature. Observability queries gain timeToFirstChunkMs fields, filtering, and sorting, plus expanded trace-scope fields (root entityId , root name , root spanType ) and richer querySpans() context/parent/root-entity filters (with updated store capabilities to detect support). Agent Controller Sessions Move to…","sponsors":[]}