LangSmith Sandboxes Reach General Availability For AI Agents

ICYMI: LangSmith Sandboxes are GA ✅ Agents get a real filesystem, shell, and package manager. Isolated from your infra. ✅ Works with Deep Agents, Open SWE, or your own code. ✅ Auth with the same API key you already have. ✅ No new runtime to build or manage.