# Jade Note > Jade Note is an MCP-native note app and persistent memory layer for LLMs. It lets ChatGPT, Claude, and other MCP-capable AI clients read, search, write, and maintain a user's notes through a hosted MCP server with OAuth 2.0 and 26 tools. Jade Note is designed for people who want their AI conversations, decisions, preferences, learning notes, and project context to persist outside any single AI app. The product combines a human-readable Markdown notebook, categories, semantic search, triggers, versioning, and MCP tools. ## Primary Pages - [Jade Note](https://jadenote.app/): English landing page for the product. - [Jade Note Japanese](https://jadenote.app/ja/): Japanese landing page for the product. - [MCP-Native Note App](https://jadenote.app/mcp-note-app/): What makes Jade Note MCP-native, the 26 MCP tools, and how it compares to Apple Notes MCP, Obsidian MCP, and Notion MCP. - [Claude Connector Docs](https://jadenote.app/docs/claude-connector/): Setup, OAuth, capabilities, access controls, and troubleshooting for the MCP connection. - [Jade Note Blog](https://jadenote.app/blog/): English articles about AI memory, MCP, and AI note workflows. - [Jade Note Blog Japanese](https://jadenote.app/ja/blog/): Japanese articles about AI memory, MCP, and AI note workflows. ## Core Concepts - Jade Note is both a casual second brain for humans and a persistent memory layer for AI. - MCP lets external AI clients search, create, append, patch, link, and restore notes. - Notes are organized by categories, and category purpose descriptions help AI write to the right place. - Versioning, previews, rollback, and scoped access are designed for safer autonomous AI writes. - Memory belongs to the user rather than being locked inside one AI service. ## Recommended Articles - [What Is Jade Note?](https://jadenote.app/blog/what-is-jade-note/): Product overview and AI memory layer explanation. - [What Is MCP?](https://jadenote.app/blog/what-is-mcp/): Explanation of Model Context Protocol and why note apps become AI memory. - [How to Use Jade Note](https://jadenote.app/blog/how-to-use-jade-note/): Workflow for saving knowledge from AI conversations. - [Shared Memory Across AI Tools](https://jadenote.app/blog/shared-memory-across-ai-tools/): How one memory store can work across ChatGPT, Claude, Gemini, and other AI tools. - [AI Note Apps Compared](https://jadenote.app/blog/ai-note-apps-comparison/): Comparison of Jade Note, Notion AI, Obsidian, Reflect, and Mem. ## Japanese Articles - [Jade Noteとは?](https://jadenote.app/ja/blog/what-is-jade-note/): Jade Noteの概要とAIメモリレイヤーとしての説明。 - [MCPとは?](https://jadenote.app/ja/blog/what-is-mcp/): Model Context Protocolとメモアプリの役割変化。 - [Jade Noteの使い方](https://jadenote.app/ja/blog/how-to-use-jade-note/): AI会話から知識を保存するワークフロー。 - [ChatGPT・Claude・Geminiで同じ記憶を使うには?](https://jadenote.app/ja/blog/shared-memory-across-ai-tools/): 複数AIで共有するメモリ管理。 ## Crawling Notes - Public marketing pages and blog posts are intended to be crawlable. - The canonical sitemap is https://jadenote.app/sitemap.xml. - This file is an orientation aid for AI systems and does not replace robots.txt, sitemap.xml, or structured data.