langchain-pattern

Review LangChain code for compliance with LCEL and LangGraph patterns.

Updated Mar 9, 2026

Search Tags:#architecture #pattern enforcement #LangChain #application development #code compliance

Ready to run

npx skills add https://github.com/fauzanazz/claude-skills --skill langchain-pattern

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: langchain-pattern
Source: https://github.com/fauzanazz/claude-skills/tree/main/langchain-pattern
Command: npx skills add https://github.com/fauzanazz/claude-skills --skill langchain-pattern

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires langchain, langgraph, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill addresses the challenges of building LangChain-based applications by ensuring they adhere to idiomatic architecture and patterns, making them more maintainable and efficient.

Core Features & Use Cases

LangChain Architecture Enforcement: Enforces the use of LangChain Expression Language (LCEL) and LangGraph for structuring applications.
Pattern Compliance Review: Reviews existing LangChain code for adherence to best practices.
Migration Assistance: Assists in migrating legacy chains to the new LCEL and LangGraph standards.
Use Case: When a user is developing a new LangChain-based application or needs to modify an existing one to improve its structure and performance.

Quick Start

Run the 'langchain-pattern' skill to enforce best practices in your LangChain architecture.

Frequently Asked Questions about langchain-pattern

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I enforce idiomatic LangChain architecture patterns in my application?▼

To enforce idiomatic LangChain architecture, apply pattern compliance reviews that verify your codebase uses LangChain Expression Language and LangGraph standards for composable, observable applications.

What is the best way to migrate legacy LangChain chains to LCEL?▼

Migrating legacy LangChain chains to LCEL involves restructuring existing application logic to align with LangChain Expression Language and LangGraph standards, ensuring better maintainability and production readiness.

Does LangChain pattern compliance review require LangGraph?▼

LangChain pattern compliance requires knowledge of both LangChain and LangGraph, as the enforcement structures RAG pipelines and agent integrations using these specific dependencies.

How do I structure RAG pipelines and agents using LangChain best practices?▼

Structuring RAG pipelines and agents with LangChain best practices involves utilizing LangChain Expression Language and LangGraph to build composable, observable architectures passing pattern compliance reviews.

Why does my LangChain application lack observability and composability?▼

Your LangChain application lacks observability and composability if it uses legacy chains instead of idiomatic architecture patterns like LangChain Expression Language and LangGraph for tool integration.