"LangChain" matching MCP servers:

An MCP server exposing document search, retrieval, and summarization tools, paired with a LangChain agent that performs multi-step tasks like finding and summarizing relevant docs.

Enables grounding AI responses in a local document corpus by exposing MCP tools to list, search, and summarize documents, and generating answers using OpenAI.

An MCP server integrating LangChain, RAG, and Agent to provide knowledge retrieval and tool invocation through natural language.

Enables an OpenRouter-powered chatbot to query MongoDB collections through MCP tools such as get_collections and query_collection.

A demonstrative MCP server that exposes a query-user tool for retrieving user info by ID, integrated with LangChain for agent-driven model reasoning and tool calls.

Enables searching the langchain-ai/langchainjs GitHub repository for TypeScript/JavaScript/Markdown code snippets using the search_langchain tool.

An MCP server that integrates with LangChain and ChromaDB to provide documentation search for AI libraries and vector database management.

A dual-mode MCP server and CLI agent for AI-powered tasks including weather, news, file management, web scraping, and data processing via LangChain.

Give any LLM agent a real Android or iPhone. 62 MCP tools: tap, swipe, type, screenshot, screen-tree reading, app launch, camera, TTS, crash reports, batched execution. Android via ADB, iPhone via WebDriverAgent, on-device inference, Docker+KVM emulators. Works with Claude Code, Cursor, LangChain, LlamaIndex, and any MCP client. MIT.

A learning-focused MCP server with two tools: a static 'hello' tool and a 'polyglot' tool that uses LangChain to detect language and return structured JSON.

MCP server that exposes tools to query an e-commerce database (customers, sales, products) using natural language, orchestrated by a LangChain agent with Groq's LLM.

An open-source web retrieval MCP server that fetches, crawls, and searches the web, returning clean markdown for AI agents. It integrates with Claude MCP, LangChain, and other frameworks for agentic web access.

Enables Claude to perform retrieval-augmented generation using LangChain, ChromaDB, and HuggingFace models for domain-aware reasoning with PDF embedding, smart retrieval, reranking, and citation-based responses.

Enables querying Confluence or Kubernetes documentation through hybrid search and an agentic RAG pipeline, returning structured answers with citations.

A tool server that processes mathematical expressions via Multi-Chain Protocol (MCP), allowing LLMs to solve math problems through tool integration.

Minimal MCP server in TypeScript with a LangChain/OpenAI assistant (assist tool) and tools for weather, math, and text-to-speech.

Enables natural-language querying of an e-commerce dataset by providing a LangChain agent that uses tools to execute parameterized SQL queries on a SQLite database, with short-term memory and Streamlit or Claude Desktop interfaces.

Enables AI agents to analyze text and retrieve real-time system metrics such as CPU, memory, and uptime through LangChain tool calling, with an embedded web UI for testing queries and viewing tool execution logs.

MCP server that provides tools to manage Gmail and Outlook emails, and search Mercadona products, for use with Cursor and LangChain.

Enables RAG-based querying of local stock company data using a local LLM and vector database, providing tools to ask questions, search raw chunks, and list documents.