Nuclei Server

Nuclei Server is an MCP server that implements a lightweight, in-memory notes management system for AI assistants. It connects Model Context Protocol clients like Claude Desktop to a local note-taking environment, providing resources, tools, and prompts built with TypeScript. Developers, researchers, and productivity-focused users employ Nuclei Server to capture and organize text notes directly through conversational interactions with an LLM. The server exposes stored notes as resources via a custom note URI scheme, allowing assistants to access plain text entries with associated titles and metadata. It features a dedicated creation tool that accepts titles and content to update server state dynamically. In addition, Nuclei Server supplies built-in prompts that collect stored notes as embedded context, allowing users to quickly request structured summaries across their entire collection of recorded notes.

Category: Notes & Knowledge Management

Tags: knowledge-management, notes, personal-knowledge

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How to install and configure Nuclei Server

1. Clone the repository locally and navigate to the project root. 2. Install dependencies by running npm install. 3. Build the server executable using npm run build. 4. Open your Claude Desktop configuration file: - macOS: ~/Library/Application Support/Claude/claude_desktop_config.json - Windows: %APPDATA%/Claude/claude_desktop_config.json 5. Add the server entry to the mcpServers object, specifying the full path to the compiled script: json { "mcpServers": { "nuclei-server": { "command": "/path/to/nuclei-server/build/index.js" } } } 6. Restart Claude Desktop to activate the server.

What you can do with Nuclei Server

• Creating quick text notes from active conversations using the create_note tool without leaving the chat interface. - Reviewing stored notes and metadata via custom note URIs for direct context retrieval by the LLM. - Generating comprehensive summaries across all saved notes simultaneously using the summarize_notes prompt. - Learning Model Context Protocol concepts through a clean TypeScript implementation featuring resources, tools, and prompts. - Debugging and inspecting stdio MCP message exchanges locally using the integrated npm run inspector script.

Key facts

• https://github.com/Spritualkb/nuclei-mcp
• Notes & Knowledge Management
• knowledge-management, notes, personal-knowledge

Part of MCP Servers

What is Nuclei Server?

Nuclei Server is a TypeScript-based Model Context Protocol server that implements a basic notes system. It acts as an example of core MCP concepts, exposing custom URI resources, note creation tools, and summarization prompts directly to compatible AI interfaces.

What tools and resources does Nuclei Server provide?

Nuclei Server provides the create_note tool to store text notes with titles and content. It provides resources accessible through note URIs with plain text MIME types, as well as a summarize_notes prompt that packages all stored notes for quick LLM summarization.

Which MCP clients work with Nuclei Server?

Nuclei Server works with any client supporting the Model Context Protocol standard over stdio, including Claude Desktop. It can also be inspected and tested in web browsers using the official MCP Inspector tool.

How do I debug Nuclei Server?

You can debug Nuclei Server by executing npm run inspector from the project directory. This starts the MCP Inspector utility and provides a browser URL to examine standard input and output communication between the server and clients.