Memory is a server that allows MCP clients like Cursor, Claude, and Windsurf to maintain user context across multiple conversations. By utilizing vector search technology, it efficiently retrieves relevant memories based on meaning rather than keywords. Built with Cloudflare Workers, D1, Vectorize, Durable Objects, Workers AI, and Agents, Memory offers a cost-effective solution (often free for typical usage) for adding persistent memory capabilities to MCP-based applications.