"A simple MCP server or implementation" matching MCP servers:

A beginner-friendly MCP server demonstrating core concepts with calculator operations and note management capabilities (create, read, list, and delete notes).

This MCP server enables AI assistants to perform calculations, fetch live weather, manage in-memory notes, access system info and note resources, and use reusable code review and summarization prompts.

A lightweight MCP server that provides persistent knowledge graph storage for AI assistants, enabling memory across sessions through entity-relationship storage with JSON file persistence.

Enables managing local Markdown notes by creating, viewing, listing, and searching notes and their contents through MCP tools.

Enables Codex to search, create, and organize notes in Simple Sticky Notes 6.9 on Windows via MCP, with support for rich text formatting and safe write operations.

Enables AI assistants to persistently add, read, and summarize sticky notes through MCP-compliant tools, resources, and prompts.

A TypeScript template for building Model Context Protocol servers that implements basic note-taking CRUD operations with JSON responses.

Searches Reddit for answers to questions and saves Q&A sessions to Notion.

A self-hosted MCP server that exposes Nextcloud files, calendar, notes, and search as tools for Claude.ai, authenticating via Nextcloud OAuth.

A TypeScript-based MCP server that implements a simple notes system with resources, tools for creating notes, and prompts for summarization.

A simple MCP server for creating and managing notes with support for summarization functionality.

Enables interaction with blockchain chains through a note storage system that allows adding, accessing, and summarizing notes via custom URI schemes.

An MCP server for the Zotero Web API v3 that lets you search, read, and write items, collections, tags, and notes in a Zotero library, supporting literature-review workflows.

Enables reading, writing, and manipulation of Bike outlines on macOS through natural language, using AppleScript for local document management.

Create and read burn-after-read encrypted notes. AES-256-GCM E2E encryption with self-destructing URLs for secure credential handoff between users and AI agents.

Provides an AI agent with a searchable markdown notes vault, offering tools to create, read, list, search, update, and delete notes stored as plain .md files.

Provides read-only access to a local Obsidian vault with zero-trust security, enabling note reading, listing, and text search via Claude.

Bridges MCP-compatible IDEs to a local MemOS instance, enabling notes from editors to be stored in the same knowledge base that AI agents read from.

Enables full Obsidian vault operations including reading, writing, searching, deleting notes, managing tags and links, with support for both local and remote access via stdio or HTTP transports.

Provides tools to read, write, search, and manage notes in an Obsidian vault via the Model Context Protocol.