langchain-ai/langchain
The agent engineering platform.
The agent engineering platform
The agent engineering platform.
Build resilient agents.
LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.
🧬 The open source chat-ai toolkit
The batteries-included agent harness.
The batteries included agent harness.
4 captures since 2026-06-04
libs/core/pyproject.toml
· python · 32 dependencies
libs/langchain/pyproject.toml
· python · 60 dependencies
libs/langchain_v1/pyproject.toml
· python · 41 dependencies
libs/model-profiles/pyproject.toml
· python · 18 dependencies
libs/standard-tests/pyproject.toml
· python · 15 dependencies
libs/text-splitters/pyproject.toml
· python · 21 dependencies
libs/core/uv.lock
· python · 0 dependencies
libs/langchain/uv.lock
· python · 0 dependencies
libs/langchain_v1/uv.lock
· python · 0 dependencies
libs/model-profiles/uv.lock
· python · 0 dependencies
AI agent config detected
Key config paths
AGENTS.md
CLAUDE.md