Hi. I'm on the Mastra team, and I've built out the observability stack. We support outputting traces to numerous 3rd party tools, and also our own system.
More info can be found here: https://mastra.ai/docs/observability/tracing/overview#export...
In the coming months we will add improvements to logging, overall metric collection, experimentation tracing, and numerous additional observability features.
Thanks for your interest.