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Tinley Park · September 9, 2026The LangSmith Feature Built for Multi-Step Agents
This video discusses how LangSmith supports the development of longer-running and multi-step agents. It highlights the utility of the threads feature for tracking agent progress over time and the ability to view subagent traces together.
The outline
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Longer-running agents and threads
The speaker introduces the trend of longer-running agents and explains how LangSmith's threads feature helps track their underlying ground truth over time.
Subagents and trace visibility
The speaker discusses the growing use of subagents and highlights a LangSmith feature that allows users to view all agent traces together in one place.
As agents execute more steps over longer periods, the ability to thread those actions and view sub-agent traces becomes essential for understanding ground truth. For a solo builder, this visibility is critical for debugging complex, multi-step systems in production.