LangSmith Engine v2 + Managed Deep Agents v0.8
LangChain's biggest LangSmith drop: an in-platform agent that red-teams your agents, detects issues, validates fixes, plus managed Deep Agents with user-level memory and built-in web search.
Why it matters
Closes the loop from trace to shipped fix: Engine v2 generates failure hypotheses from production traces, tests candidate fixes against eval sets, and opens a PR with one click. Trajectories also turns agent sessions into fine-tuning data.
What you could build with it
Let the in-platform agent red-team your agents, detect issues, and validate fixes: a continuous red-team-to-PR loop for production agent systems.
First spotted on engineering blog: source.
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