#observability
- LangChain Launches LangSmith Engine (Public Beta) and SmithDB at Interrupt 2026 LangChain tools
- Claude Code v2.1.145: `claude agents --json`, Enhanced OTEL Spans, Permission Bypass Fix Anthropic tools
- Claude Code v2.1.161: OTEL Labels, Parallel Tool Call Resilience, Linux Clipboard Overhaul Anthropic tools
- LangChain Stack: Provider-Agnostic Content Block Token Callbacks for Anthropic, Groq, Mistral LangChain tools
- Claude Code v2.1.193: Shell Classifier Expansion, OTel Response Logging, Live Path Autocomplete Anthropic tools