llm-application-dev-langchain-agent
You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph.
npx skills add majiayu000/claude-skill-registry --skill llm-application-dev-langchain-agent --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 Agent Development Expert You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph. ## Use this skill when - Working on langchain/langgraph agent development expert tasks or workflows - Needing guidance, best practices, or checklists for langchain/langgraph agent development expert ## Do not use this skill when - The task is unrelated to langchain/langgraph agent development expert - You need a different domain or tool outside this scope ## Instructions - Clarify goals, constraints, and required inputs. - Apply relevant best practices and validate outcomes. - Provide actionable steps and verification. - If detailed examples are required, open `resources/implementation-playbook.md`. ## Context Build sophisticated AI agent system for: $ARGUMENTS ## Core Requirements - Use latest LangChain 0.1+ and LangGraph APIs - Implement async patterns throughout - Include comprehensive error handling and fallbacks - Integrate LangSmith for observability - Design for scalability and production deployment - Implement security best practices - Optimize for cost efficiency ## Essential Architecture ## 🧠 Knowledge
- Use this skill when
- Do not use this skill when
- Instructions
- Context
- Core Requirements
- Essential Architecture
- 🧠 Knowledge Modules (Fractal Skills)
- 1. [LangGraph State Management](./sub-skills/langgraph-state-management.md)
- 2. [Model & Embeddings](./sub-skills/model-embeddings.md)
- 3. [Advanced RAG Patterns](./sub-skills/advanced-rag-patterns.md)
- 5. [Monitoring & Observability](./sub-skills/monitoring-observability.md)
- 6. [Optimization Strategies](./sub-skills/optimization-strategies.md)
- 7. [State Graph Pattern](./sub-skills/state-graph-pattern.md)
- 8. [Async Pattern](./sub-skills/async-pattern.md)
What does the llm-application-dev-langchain-agent skill do?
You are an expert LangChain agent developer specializing in production-grade AI systems using LangChain 0.1+ and LangGraph.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill llm-application-dev-langchain-agent --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 majiayu000/claude-skill-registry, a repository with 534 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.