LangSmith Engine v2 adds red teaming and pre-validated agent fixes

LangChain released LangSmith Engine v2, an in-platform agent that scans production traces to detect agent issues and validates proposed fixes before human review.

Engine v2 adds Red Teaming, currently in Private Beta for LangSmith Deployment users, which tests agents for weaknesses such as hallucinations and system-prompt violations before they reach production.

Engine v2 is available in SaaS deployments for LangSmith Plus and Enterprise plans, with Self-Hosted support and BYOK for Engine coming later.