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langgraph-human-in-the-loop

Implement human-in-the-loop approval workflows in LangGraph with interrupt and Command.

Updated Mar 20, 2026
Search Tags:#error handling#LangGraph#human-in-the-loop#approval workflow#graph execution
One-click install
npx skills add https://github.com/orezek/paradegolf --skill langgraph-human-in-the-loop-orezek
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: langgraph-human-in-the-loop
Source: https://github.com/orezek/paradegolf/tree/main/.agents/skills/langgraph-human-in-the-loop
Command: npx skills add https://github.com/orezek/paradegolf --skill langgraph-human-in-the-loop-orezek

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

The langgraph-human-in-the-loop Skill addresses the challenge of implementing human-in-the-loop patterns in LangGraph, enabling users to pause graph execution for approval or error handling, and then resume with human input.

Core Features & Use Cases

  • Pause Execution: Temporarily halt graph execution to review intermediate results.
  • Approval Workflows: Use interrupt and Command to implement approval/validation workflows.
  • Error Handling: Implement a 4-tier error handling strategy for robustness.
  • Multiple Interrupts: Support for multiple parallel interruptions and their simultaneous resumption.
  • Idempotency Rules: Ensures that side effects are idempotent, preventing duplicates on resumption.
  • Use Case: When processing complex analyses, this Skill allows human experts to review intermediate steps and provide necessary input to ensure accuracy.

Quick Start

To implement a human-in-the-loop approval step, use the langgraph-human-in-the-loop Skill to pause the execution at a critical point, prompt for approval with interrupt(), and then resume execution with Command(resume=...) based on the human's response.

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 LangGraph execution for human approval?▼

LangGraph human-in-the-loop workflows use `interrupt()` to pause graph execution at critical nodes, allowing human experts to review intermediate results and provide approval input before resuming with `Command(resume=...)`.

What is the best way to handle errors during LangGraph human-in-the-loop workflows?▼

The best way to handle errors in LangGraph human-in-the-loop workflows is implementing a 4-tier error handling strategy, which ensures robustness when pausing, resuming, or validating graph operations with human input.

Can I trigger multiple parallel interrupts in a LangGraph execution?▼

Yes, LangGraph execution supports multiple parallel interruptions, allowing you to pause several graph branches simultaneously for human validation and then resume them simultaneously with the provided human input.

Do I need checkpointing mechanisms to implement approval workflows in LangGraph?▼

Yes, LangGraph checkpointing mechanisms are required to implement human-in-the-loop approval workflows, as they manage the execution state needed to pause and resume graph operations with human input.

How do I prevent duplicate side effects when resuming LangGraph operations?▼

To prevent duplicate side effects when resuming LangGraph operations after an interrupt, you must enforce idempotency rules within your graph nodes, ensuring that resuming execution does not re-trigger previously completed actions.

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