@mastra/core@1.70.0 @mastra/core@1.71.0
mastra-ai/mastraSep 25, 2026 → Sep 25, 20260 days between releases
What's New
Adds Discord integration, eager tool execution, and observability capability negotiation.
Breaking Changes
- Removed title, TaskListHeader, and hideWhenEmpty from @mastra/playground-ui TaskList API
New Features
- New @mastra/discord package for connecting to Discord
- New eagerToolExecution option for agents and workflows
- New planTraceAggregate() API for trace aggregation planning
- Storage adapters can declare supported features via getFeatures()
- MongoDB Vector 'Automated Embeddings' (server-side embedding generation)
Improvements
- Eager Tool Execution for faster streaming runs
- Observability capabilities negotiation (Storage ↔ Server ↔ Client)
- Discovery-backed observability filters for supported stores
- Trace aggregation planning API (planTraceAggregate())
- New feedback observability storage capability
Upgrade Notes
If using the TaskList component in @mastra/playground-ui, remove the props title, TaskListHeader, and hideWhenEmpty as they have been removed. This change affects the UI rendering of task lists in the playground.
The Two Releases
September 24, 2026
Sep 25, 2026· 27 days ago
This release adds Model Routing per Request via `ModelSelectionProcessor`, cross-process cancellation for queued thread input, and multi-tenant safe observability queries. It also improves durable streaming and adds tag predicates to advanced trace queries.
Full release notesSeptember 24, 2026
Sep 25, 2026· 27 days ago
This release focuses on observability capabilities negotiation, eager tool execution for faster streaming, and new integrations including Discord. It also introduces MongoDB Vector 'Automated Embeddings' and provides new discovery and aggregation planning APIs for trace queries.
Full release notes