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Open-Source MCP servers

Production-ready MCP servers that extend AI capabilities through file access, database connections, API integrations, and other contextual services.

11,905 servers. Last updated -

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    A guide for implementing Model Context Protocol (MCP) servers that provide AI models with external tools like web search, text manipulation, and mathematical operations.
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    Persistent memory and pattern learning for AI coding assistants via MCP.
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    A beginner-friendly Model Context Protocol (MCP) server that helps users understand MCP concepts, provides interactive examples, and lists available MCP servers. This server is designed to be a helpful companion for developers working with MCP. Also comes with a huge list of servers you can install.
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    Apache 2.0
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    Provides an agent-first note-taking system designed from the ground up for AI collaboration. Organizes your notes as a local vault of ordinary markdown files with semantic note types.
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    A local MCP server that enables AI applications like Claude Desktop to securely access and work with Obsidian vaults, providing capabilities for reading notes, executing templates, and performing semantic searches.
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    MIT License
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    An agent-first note-taking system that provides AI-guided creation and organization of structured markdown notes with customizable note types, multi-vault support, and intelligent metadata schemas. Enables natural conversation-based knowledge management with local file storage and cross-vault operations.
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    Extract content from URLs, documents, videos, and audio files using intelligent auto-engine selection. Supports web pages, PDFs, Word docs, YouTube transcripts, and more with structured JSON responses.
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    Enables automated publishing and draft saving to note.com platform using Playwright automation. Reads Markdown files with titles, body text, and tags to publish content directly to your note.com account.
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    This is a connector to allow Claude Desktop (or any MCP client) to read and search any directory containing Markdown notes (such as an Obsidian vault).
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    A server implementation that allows AI assistants to read, create, and manipulate notes in Obsidian vaults through the Model Context Protocol.
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    A Model Context Protocol server that enables AI assistants to read, write, and manipulate notes in your Obsidian vault through a standardized interface.
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    ISC License
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    Allows AI models to interact with Obsidian notes through the Local REST API, enabling creation, reading, updating, searching of notes, and Git-based automatic backups.
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    MIT License
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    A specialized Model Context Protocol server that enhances AI-assisted medical learning by connecting Claude Desktop to PubMed, NCBI Bookshelf, and user documents for searching, retrieving, and analyzing medical education content.
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    MIT License
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    Enables direct file system access to Obsidian vaults with auto-discovery, full-text search, and note operations. Supports reading, writing, and searching across Obsidian notes without requiring plugins or REST API.
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    Enables AI assistants to interact with Obsidian vaults, providing tools for reading, creating, editing and managing notes and tags.
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    Fetches and tracks content from YouTube channels, RSS feeds, and GitHub releases with persistence to identify new items across sessions.
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    This project implements a Model Context Protocol (MCP) server for connecting AI models with Obsidian knowledge bases. Through this server, AI models can directly access and manipulate Obsidian notes, including reading, creating, updating, and deleting notes, as well as managing folder structures.
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    Enables semantic search across Obsidian vaults using vector embeddings and ChromaDB. Supports multiple vaults with real-time indexing and provides both MCP server and CLI interfaces for natural language querying of notes.
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    Enables interaction with note.com through API to search and read articles, manage posts and drafts, handle comments and likes, retrieve analytics, and access membership information.
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    Enables AI assistants to interact with Obsidian vaults through direct filesystem access, supporting note management, lightning-fast search with SQLite indexing, image analysis, tag/link management, and bulk operations.
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    MIT License
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    Connects Obsidian vaults stored in iCloud Drive to AI models via the Model Context Protocol, allowing AI assistants to access and interact with your Obsidian notes.
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    Enables AI-powered Ghost CMS blog management through Claude Desktop with content generation, image creation, and complete post management. Integrates Google Gemini for content generation and Flux/Imagen for feature images with GitHub OAuth authentication.
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    Enables comprehensive content management through Markdown processing, HTML rendering, intelligent fuzzy search, and document analysis. Supports frontmatter parsing, tag-based filtering, table of contents generation, and directory statistics for efficient content organization and discovery.
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    All In One Model Context Protocol: qdrant, google suite (gmail, calendar, ...), jira, gitlab, CLI, ...
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    Enables interaction with Obsidian vaults through MCP, supporting note creation from templates, link management, backlink analysis, tag operations, and automatic Map of Contents generation.
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    Connects to Obsidian vaults via the Local REST API plugin, enabling AI-assisted Zettelkasten workflows including creating atomic notes, searching content, managing links and tags, and performing precise content editing operations.
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    MIT License
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    Obsidian vault connector for Claude Desktop - enables reading and writing Markdown notes using Model Context Protocol (MCP)
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    Enables automatic creation and management of weekly work reports in Korean through structured templates. Organizes work tasks and issues with automatic file management, backup/rollback, and 100% template compliance through JSON Schema validation.
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    MIT License
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    A Model Context Protocol server providing tools for querying A-share stock market data, including historical prices, financial reports, market indices, and macroeconomic indicators.
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    Enables AI assistants like Claude to read, search, create, and manage notes in Obsidian vaults, with features for link analysis, tag management, daily notes, templates, and optional Google Calendar integration. Provides comprehensive vault operations including batch updates, backlinks discovery, and secure file management with path traversal protection.
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    Stores AI memories as Markdown files for visualization in Obsidian's graph view, allowing users to create knowledge graphs with entities, relations, and observations.
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    MIT License