langgraph-cassette
Debug LangGraph/LangChain agents offline with cassette record/replay + token & cost logging.
@daitanjs/intelligence
A modular library for advanced LLM orchestration, stateful RAG, multi-step agentic workflows, and tool use, built on LangChain.js.
vscode-chat-langchain-bridge
Create VS Code Chat participants (agents) with LangChain/LangGraph: tool-calling and streaming bridge for LanguageModelChat.