langgraph

langgraph is a skill for Claude Code, Codex from Omar-Obando/qwen-orchestrator. It costs 57 tokens per session (2,662 once invoked), scanned A, original, MIT.

A guide to building stateful software agents and workflows with LangGraph, a tool for connecting steps into a graph while keeping track of information between them. It covers Python and JavaScript implementations.

In plain words
What is it for?
It helps build graph-based workflows, save checkpoints, route tasks between steps, add human approval, coordinate multiple agents, connect tools, and trace agent activity.
Why use it?
It helps structure agents that need memory, saved progress, multiple cooperating agents, or approval from a person during a workflow.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps build graph-based workflows, save checkpoints, route tasks between steps, add human approval, coordinate multiple agents, connect tools, and trace agent activity.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/omar-obando/qwen-orchestrator/langgraph
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Omar-Obando/qwen-orchestrator --skill langgraph
Clone the repo
git clone --depth 1 https://github.com/Omar-Obando/qwen-orchestrator

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for langgraph

README.md
[![agentmods](https://agentmods.dev/badge/skills/omar-obando/qwen-orchestrator/langgraph/github.svg)](https://agentmods.dev/skills/omar-obando/qwen-orchestrator/langgraph)
Your own site
<a href="https://agentmods.dev/skills/omar-obando/qwen-orchestrator/langgraph"><img src="https://agentmods.dev/badge/skills/omar-obando/qwen-orchestrator/langgraph/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for langgraph

Your own site · 80×15
<a href="https://agentmods.dev/skills/omar-obando/qwen-orchestrator/langgraph"><img src="https://agentmods.dev/badge/skills/omar-obando/qwen-orchestrator/langgraph.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,662 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00057 $0.02662
Opus 5 $0.00028 $0.01331
Sonnet 5 $0.00011 $0.00532
Haiku 4.5 $0.00006 $0.00266

Measured 5d ago against content hash f7227fe9e5fb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

langgraph scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/langgraph/SKILL.md · 437 lines

How it starts

The opening of the file, as written. The whole thing — 437 lines — stays where its author put it; the contents beside it link to each section on GitHub.

LangGraph Skill — Stateful Agents & Graph Workflows

Overview

This skill provides comprehensive guidance for building stateful agents and workflows with LangGraph, implementing graph-based architectures, managing state persistence, human-in-the-loop capabilities, and multi-agent systems. It includes Python and JavaScript implementations. Based on LangChain/LangGraph official documentation and agent development best practices.

When to Use

Use this skill when:

  • Building stateful agents with LangGraph
  • Implementing graph-based architectures with StateGraph
  • Managing state persistence and checkpoints
  • Creating human-in-the-loop workflows with interrupts
  • Building multi-agent systems with handoffs
  • Implementing durable execution and memory
  • Using checkpointer strategies (InMemory, SQLite, PostgreSQL)
  • Implementing thread management and session persistence
  • Building agent swarms with LangGraph Swarm
  • Creating conditional edges and routing logic
  • Implementing agent communication patterns
  • Setting up LangGraph Studio for debugging
  • Using LangSmith for tracing and monitoring
  • Building agents with tool calling capabilities
  • Implementing retry and error handling patterns
  • Creating agents with streaming output
  • Building agents with context window management
  • Implementing agent memory with vector stores
  • Creating agents with external knowledge sources
  • Building agents with multi-step reasoning

Do NOT use this skill when:

  • Building basic LLM applications without state (use llm-integrations skill)
  • Designing database schema (use database-design skill)
  • Creating UI components (use frontend-design skill)
  • Writing simple prompt templates (use langchain skill for basic LLM operations)
  • Implementing non-agent workflows (use standard application development skill)
  • Building simple chat applications without complex state (use qwen-agent skill for Qwen-specific apps)
  • Managing agent teams across multiple agents (use agent-task-coordinator skill)

Read the full file on GitHub · 437 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 437 lines · 57 tokens per session scan A f7227fe9e5fb

Subscribe to this mod's changes

langgraph is a skill published in the GitHub repository Omar-Obando/qwen-orchestrator (49 stars, last pushed 2mo ago), licensed MIT. It adds 57 tokens to every session and 2,662 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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