Langsmith Engine appears to be a seriously high value release from the @LangChain team A deep agent that’s monitoring Langsmith agent traces…

Langsmith Engine appears to be a seriously high value release from the @LangChain team A deep agent that’s monitoring Langsmith agent traces and not only surfaces issues but: - proposes a PR to resolve the issue - adds the traces to a dataset for regression testing - creates a custom evaluator to catch similar issues going forward The team at Langchain continues to deliver features that are on the nose for what I need when building agentic systems, and continues to make me question building the features myself As someone who always feels like I can do something better myself, that’s a big compliment! Congrats to the team We just shipped tons of new products to accelerate the full agent development lifecycle: https://www.langchain.com/blog TLDR: ✅ LangSmith Engine ✅ SmithDB ✅ Sandboxes ✅ Managed Deep Agents ✅ LLM Gateway ✅ Context Hub ✅ Deep Agents 0.6

Source: Harrison Chase (X) | 2026-05-13