Multi‑Agent Systems

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Frameworks · ReferenceFramework

LangChain4j

Brings LLM and agentic capabilities to the JVM (Java/Kotlin) with LangChain-style abstractions.

Scenario Agentic features in Spring/Quarkus appsLicense Open source (Apache 2.0)
01

Suitability

Best for

Adding agentic features to JVM (Java/Kotlin, Spring/Quarkus) backends.

Watch out

No single native orchestrator; multi-agent flows are composed by hand.

02

Architecture & integrations

Java-native abstractions (AiServices, chains, tools); MCP module available. Java/Kotlin enterprise backends adding agentic features without leaving the JVM.

03

Technical profile

Approach
LangChain philosophy ported to Java/Kotlin (AiServices, tools, RAG).
Control & learning curve
Medium; idiomatic for JVM/Spring/Quarkus developers.
Performance
Runs in existing JVM enterprise backends; no Python bridge.
04

Pattern support

ReActSequential Pipeline
NativeComposable / supportingColor = ladder level L1–L4
Native patterns: Tool use, Sequential, ReAct-style agents
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