Claude Code WorkflowsTitle

LangSmith plugin tracing Claude Code runs

April 3, 2026LangChain

LangChain ships a plugin to trace Claude Code runs into LangSmith, including subagents, tool calls, and compaction runs, enabling evals to measure the impact of skills and MCPs.

We've shipped a new way to trace Claude Code runs to LangSmith!
It's a plugin that traces subagents, tool calls, compaction runs, and more.
You can run evals to test the impact of skills/MCPs
LangChain
observabilityevalsclaude code

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