LangChain

Repositories

• agent-inbox-langgraphjs-example An example repository for getting started with the Agent Inbox and LangGraph.js
• ambient-agent-101 Learn about the fundamentals of LangGraph through building an ambient email agent
• data-enrichment-js LangGraph Studio Data Enrichment Template
• datafusion-materialized-views Incremental view maintenance & query rewriting for materialized views in DataFusion
• deepagents-quickstarts REPO MOVED
• deepagentsjs The batteries included agent harness.
• js-langgraph-monorepo-example Example JS monorepo for deploying to LangGraph Platform
• langchain-ai21 🦜️🔗 LangChain AI21
• langchain-azure Build secure LangChain applications on Azure
• langchain-neo4j 🦜️🔗 LangChain Neo4j
• langchain-sema4 🦜️🔗 LangChain Sema4
• langgraph-101 Learn about the fundamentals of LangGraph through a series of notebooks
• langgraph-101-ts LangGraph 101 - TypeScript
• lca-langchainV1-essentials lca-langchainV1-essentials
• neo4j-semantic-layer neo4j-app
• text-to-sql-agent Text-to-SQL Agent

MCPs

• LangSmith Agent Server MCP LangSmith Agent Server MCP exposes LangGraph agents as MCP tools over Streamable HTTP on the Agent Server. La…
• LangSmith Remote MCP LangSmith Remote MCP gives agents LangSmith tracing datasets and prompt tools through a hosted MCP. LangChain…

• Series B Announced 20 Oct 2025 · Leads: IVP
  $125M Raised $125M Round $1.25B Post-money 11 investors Closed
• Series A Announced 15 Feb 2024 · Leads: Sequoia Capital
  $25M Raised $25M Round $200M Post-money 2 investors Closed
• Seed Announced 04 Apr 2023 · Leads: Benchmark Capital
  $10M Raised $10M Round 1 investors Closed