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langgraph-human-in-the-loop

Pause a running LangGraph graph for human input and resume with Command(resume=...).

3|1|Updated Jun 4, 2025
Search Tags:#workflow#resume#command#langgraph#human-in-the-loop#interrupt#checkpointer
One-click install
npx skills add https://github.com/jillesca/sp_oncall --skill langgraph-human-in-the-loop-jillesca
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: langgraph-human-in-the-loop
Source: https://github.com/jillesca/sp_oncall/tree/main/.agents/skills/langgraph-human-in-the-loop
Command: npx skills add https://github.com/jillesca/sp_oncall --skill langgraph-human-in-the-loop-jillesca

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

LangGraph's human-in-the-loop patterns let you pause graph execution at decision points, surface data to users, and resume with their input to continue the investigation or processing.

Core Features & Use Cases

  • Pause execution with interrupt() to surface context for human review.
  • Resume with Command(resume=...) to rehydrate state and continue processing.
  • Support for checkpointer strategies and thread-based resumes to coordinate multi-user or multi-step approvals.

Quick Start

To begin, pause a running graph at a decision point and resume with a structured response using Command(resume=...).

Frequently Asked Questions about langgraph-human-in-the-loop

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I pause a LangGraph workflow for human review?▼

To pause a LangGraph workflow for human review, use the interrupt() function at a decision point to halt graph execution and surface context to a user for input before continuing.

How do I resume a LangGraph graph after an interrupt?▼

Resume a paused LangGraph graph by invoking Command(resume=...) with the human's input, which rehydrates the state and continues processing from the interruption point.

Can I coordinate multi-step approvals in LangGraph using checkpointer strategies?▼

Yes, LangGraph supports checkpointer strategies and thread-based resumes to coordinate multi-user or multi-step approvals across paused workflow states.

What is the human-in-the-loop pattern in LangGraph workflows?▼

The human-in-the-loop pattern in LangGraph workflows pauses graph execution at decision points, surfaces data to users, and resumes with their structured input to continue investigation or processing.

Do I need a checkpointer to use interrupt and resume in LangGraph?▼

A checkpointer is needed to save the graph state when interrupt() pauses execution, enabling the thread-based resume with Command(resume=...) to rehydrate and continue the workflow.

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