Show HN: Mastra 1.0, open-source JavaScript agent framework from the Gatsby devs

Re:Show HN: Mastra 1.0, open-source JavaScript agent framewo... by kxbnb on Wednesday January 21, 2026 @11:54AM (#46708234)

Congrats on the 1.0 launch! The workflow and agent composition primitives look well-designed.

Curious about the observability story - when agents make tool calls, how do you debug what actually got sent to external APIs? We've found that's often the hardest part of agent development - the "it works locally but fails in production" debugging loop.

Great to see more production-ready agent frameworks emerging. Will be following the project!

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Re:Show HN: Mastra 1.0, open-source JavaScript agent framewo... by epinzur on Wednesday January 21, 2026 @01:05PM (#46709172)

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.

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