langchain-langgraph-human-in-loop
Build LangGraph 1.0 human-in-the-loop approval flows with `interrupt_before`\ \ /\n`interrupt_after` and `Command(resume=...)` \u2014 JSON-serializable state,\ \ clean\nresume semantics, and UI wiring for approval decisions. Use when adding\ \ an\napproval gate before an expensive tool call, wiring a Slack/web UI for agent\n\ approvals, or debugging a graph that crashes on interrupt.\nTrigger with \"langgraph\ \ human in loop\", \"langgraph interrupt_before\",\n\"langgraph approval flow\"\ , \"Command resume\", \"langgraph HITL\".\n"
npx skills add jeremylongshore/claude-code-plugins-plus-skills --skill langchain-langgraph-human-in-loop --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# LangChain LangGraph Human-in-the-Loop (Python) ## Overview A team adds `interrupt_before=["send_email"]` to require a human approval before the email goes out. First integration test crashes at the interrupt boundary with: ``` TypeError: Object of type datetime is not JSON serializable ``` The culprit is two nodes upstream: a `classify` node stashed `"received_at": datetime.utcnow()` into state.
What does the langchain-langgraph-human-in-loop skill do?
Build LangGraph 1.0 human-in-the-loop approval flows with `interrupt_before`\ \ /\n`interrupt_after` and `Command(resume=...)` \u2014 JSON-serializable state,\ \ clean\nresume semantics, and UI wiring for approval decisions. Use when adding\ \ an\napproval gate before an expensive tool call, wiring a Slack/web UI for agent\n\ approvals, or debugging a graph that crashes on interrupt.\nTrigger with \"langgraph\ \ human in loop\", \"langgraph interrupt_before\",\n\"langgraph approval flow\"\ , \"Command resume\", \"langgraph HITL\".\n"
How do I install it?
Run `npx skills add jeremylongshore/claude-code-plugins-plus-skills --skill langchain-langgraph-human-in-loop --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From jeremylongshore/claude-code-plugins-plus-skills, a repository with 2,596 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.