SkillsSKILLS
Productivity

langgraph-human-in-the-loop▌

langchain-ai/langchain-skills · updated Apr 8, 2026

$npx skills add https://github.com/langchain-ai/langchain-skills --skill langgraph-human-in-the-loop
summary

Pause graph execution for human review, approval, or validation, then resume with their input.

  • ›Requires three components: a checkpointer (InMemorySaver or PostgresSaver), a thread ID in config, and JSON-serializable interrupt payloads
  • ›interrupt(value) pauses and surfaces data; Command(resume=value) resumes and returns that value to the paused node
  • ›All code before interrupt() re-executes on resume, so side effects must be idempotent (use upsert, not insert)
  • ›Supports approval workfl
skill.md

langgraph-human-in-the-loop

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