langchain4j-ai-services-patterns

Installation
SKILL.md

LangChain4j AI Services Patterns

This skill provides guidance for building declarative AI Services with LangChain4j using interface-based patterns, annotations for system and user messages, memory management, tools integration, and advanced AI application patterns that abstract away low-level LLM interactions.

Overview

LangChain4j AI Services define AI functionality using Java interfaces with annotations, providing type-safe, declarative AI with minimal boilerplate.

When to Use

Use this skill when:

  • Building declarative AI services with minimal boilerplate using Java interfaces
  • Creating type-safe conversational AI with memory management
  • Implementing AI agents with function/tool calling capabilities
  • Designing AI services returning structured data (enums, POJOs, lists)
  • Integrating RAG patterns declaratively

Instructions

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Feb 3, 2026