LangSmith CLI & Skills

LangChain is releasing a LangSmith CLI and a set of "skills" designed to give AI coding agents (like Claude Code) expertise in the LangSmith ecosystem. Skills are dynamically loaded, curated instructions and scripts covering tracing, dataset building, and agent evaluation. On their benchmark, adding these skills boosted Claude Code's pass rate on LangSmith tasks from 17% to 92%. The CLI can be installed via a shell script, and skills are installable via npx, supporting both local and global configurations for specific agents.