Resurf

Product Introduction

1. Definition: Resurf is a native, privacy-focused personal knowledge management (PKM) application and context engine for macOS, iOS, and iPadOS. It functions as a digital second brain, allowing users to capture, organize, and retrieve disparate information fragments.
2. Core Value Proposition: Resurf exists to solve the problem of fragmented digital context. It centralizes notes, links, images, PDFs, and ideas into a single, searchable, and locally-stored repository, enabling users to resurface relevant information on-demand or leverage it through AI tools via its Model Context Protocol (MCP) server and Command Line Interface (CLI).

Main Features

1. Multi-Format Capture: Resurf supports ingestion of diverse data types including rich text notes, web URLs (with metadata scraping), image files, and PDF documents. This creates a unified, searchable index from heterogeneous sources, breaking down data silos.
2. Local-First Storage with iCloud Sync: All user data is stored locally on the device, ensuring privacy and immediate access. Optional, end-to-end encrypted iCloud synchronization provides seamless data continuity across a user's Apple ecosystem (Mac, iPhone, iPad) without relying on third-party servers.
3. AI Integration via MCP Server & CLI: This is Resurf's key technical integration. It acts as a Model Context Protocol (MCP) server, exposing the user's entire curated knowledge base to compatible AI assistants (like Claude Desktop). This allows AI to access personal, private context without manual copying, enabling highly personalized and informed AI interactions. The CLI provides scriptable access for power users.

Problems Solved

1. Pain Point: Context fragmentation and loss. Critical information is scattered across browser bookmarks, note-taking apps, desktop folders, and screenshots, making it difficult to find and utilize later, a phenomenon known as "digital context collapse."
2. Target Audience: Knowledge workers, researchers, writers, developers, and students who aggregate information from multiple sources. Specifically, it targets privacy-conscious Apple ecosystem users and tech-savvy individuals who actively use AI assistants and require those AIs to have access to personalized, private data.
3. Use Cases: A researcher saving paper PDFs, relevant blog posts, and their own commentary for a literature review. A developer storing code snippets, API documentation links, and debugging notes. A writer collecting inspiration images, interview notes, and article references for a project.

Unique Advantages

1. Differentiation: Unlike cloud-dependent note apps (Evernote, Notion) or generic bookmark managers, Resurf's local-first architecture prioritizes user privacy and data sovereignty. Unlike other MCP data sources that might only expose specific platforms (like Google Drive), Resurf exposes a user's curated and consolidated personal knowledge base.
2. Key Innovation: The seamless integration of a locally-managed, private knowledge base with the emerging AI agent ecosystem via the Model Context Protocol. This transforms Resurf from a passive storage app into an active "context engine" for AI, bridging the gap between private memory and large language models without compromising security.

Frequently Asked Questions (FAQ)

1. Is Resurf a note-taking app or a bookmark manager? Resurf is a hybrid personal context engine that transcends both categories; it is designed to capture notes, bookmarks, files, and ideas into a unified, private database that is both human-searchable and accessible to AI tools.
2. How does Resurf's AI integration work with ChatGPT or Claude? Resurf integrates via the Model Context Protocol (MCP), a standard pioneered by Anthropic. When configured as an MCP server in an AI assistant client like Claude Desktop, Resurf allows the AI to securely query and reference your saved notes, links, and files directly within the conversation, providing context-aware responses.
3. Where is my data stored when using Resurf? Primarily, all data is stored locally on your Apple device (Mac, iPhone, iPad). If you enable sync, data is copied end-to-end encrypted via your private iCloud account. Resurf's developers do not host or have access to your knowledge base.
4. Can I use Resurf on Windows or Android devices? No, Resurf is currently a native application exclusively for the Apple ecosystem (macOS, iOS, iPadOS), leveraging platform-specific frameworks for performance and deep system integration.
5. What is the Model Context Protocol (MCP) and why is it important? The Model Context Protocol (MCP) is an open protocol that allows AI applications to connect securely to external data sources and tools. Resurf's MCP support is crucial as it standardizes how your private knowledge is safely exposed to AI, making you less dependent on any single AI vendor's proprietary extension system.