September 22, 2026
Mastra's September 22, 2026 release introduces @mastra/mcp@2.0.0 built on the MCP 2026-07-28 spec, adds Azure AI Search and Weaviate vector backends, optimizes durable-agent checkpoints, and delivers breaking changes to streaming message events.
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为什么值得关注
The Mastra release on September 22, 2026 brings major architectural and performance updates across core, MCP, and storage packages. Highlights include: - MCP v2 Architecture: @mastra/mcp@2.0.0 migrates strictly to MCP revision 2026-07-28, eliminating initialization handshakes and session headers while adopting context.suspend() and context.resumeData with signed continuation states (requestState). - New Vector Backends: Introduced @mastra/azure-ai-search@0.1.0 and @mastra/weaviate@0.1.0 with rich filtering capabilities. - Durable-Agent Snapshotting: Halts default persistence of running checkpoints to prevent storage churn, preserving pending, paused, and suspended states unless recovery.durableAgents is set to 'auto'. - Memory Trimming: Added token-budgeted messageHistory (maxTokens, atMaxRemoveTokens) that trims the oldest context without deleting stored records. - Observability Improvements: Advanced trace queries gain page-based pagination, delta polling, and root-span summary previews across ClickHouse, DuckDB, and PG adapters. - Core Enhancements: Added extensible workspace grep text extensions, resumable storage prune() execution, server-side orderBy for datasets/experiments, and dataset snapshot integrity helpers. - Breaking Changes: Agent Controller streaming message protocol now sends one start event followed by ID-addressed updates and an ID-only end event. @mastra/mcp@2.0.0 removes legacy transport, handshake, and elicitation surfaces.
可执行摘要
Mastra core and ecosystem packages updated. Key highlights: @mastra/mcp@2.0.0 enforces MCP 2026-07-28 with suspend/resume state handling and drops legacy handshakes; agent controller streaming events now emit start, delta updates by ID, and end with ID only; durable agents stop persisting running checkpoints by default; and new vector stores @mastra/azure-ai-search and @mastra/weaviate are added.
- Agent 实用度
- 82/100
- 可信度
- 96%
- 机器格式
- JSON + Markdown
开发者应核对什么
- Update client-side stream consumers for Agent Controller to handle the new ID-addressed delta updates and ID-only message end events.
- Migrate MCP integrations to @mastra/mcp@2.0.0 by removing legacy handshake/elicitation code and adopting the suspend/resume API.
- Review durable agent configurations: enable recovery.durableAgents: 'auto' or configure shouldPersistSnapshot if running checkpoints must be persisted to storage.
- Optionally update trace query consumers to leverage page-based pagination, delta polling, and root-span preview fields.