ClaudSkills / Engineering / engineering-misc

Langchain Langgraph Human In Loop

Quality score: 70/100 · Category: Engineering · Sub-category: engineering-misc

Build LangGraph 1.0 human-in-the-loop approval flows with `interrupt_before` / `interrupt_after` and `Command(resume=...)` — JSON-serializable state, clean resume semantics, and UI wiring for approval decisions. Use when adding an approval gate before an expensive tool call, wiring a Slack/web UI for agent approvals, or debugging a graph that crashes on interrupt. Trigger with "langgraph human in loop", "langgraph interrupt_before", "langgraph approval flow", "Command resume", "langgraph HITL".

What this skill does

Langchain Langgraph Human In Loop is a production-ready Claude Code skill (quality score 70/100) in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/langchain-langgraph-human-in-loop/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when adding an approval gate before an expensive tool call, wiring a Slack/web UI for agent approvals, or debugging a graph that crashes on interrupt. Trigger with "langgraph human in loop", "langgraph interrupt_before", "langgraph approval flow", "Command resume", "langgraph HITL".

Who uses this skill

The Langchain Langgraph Human In Loop skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/langchain-langgraph-human-in-loop
curl -L https://claudskills.com/skills/langchain-langgraph-human-in-loop/SKILL.md \
  -o ~/.claude/skills/langchain-langgraph-human-in-loop/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/langchain-langgraph-human-in-loop/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/langchain-langgraph-human-in-loop/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\langchain-langgraph-human-in-loop\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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