Mastra core 1.71 starts each tool call as soon as its own arguments finish streaming
GitHub·medium signal
@mastra/core 1.71.0, published minutes after 1.70 on 2026-09-25, adds eager tool execution. Tool calls start when their own arguments are complete instead of waiting for the model to finish streaming the whole step, which cuts idle time in multi-tool steps, and it can be turned off per run. It also adds @mastra/discord and MongoDB Vector 'Automated Embeddings', where MongoDB generates embeddings server-side from plain text. planTraceAggregate() lays groundwork for aggregateTraces().