Show GN: Memex - a local RAG MCP server that infers semantic relationships between notes and auto-injects them into Claude's context

Memex is a tool that lets you connect notes like Obsidian, but automatically finds related notes based solely on semantic relevance, without explicit links.

When a user saves a note like 'Decision to use JWT,' later when asking authentication-related questions, it surfaces related trade-off or architecture decision notes even if they weren't directly linked.

Key Features and How It Works

• Local RAG implementation: When a note is saved, it generates an Embedding locally and indexes it in SQLite.
• MCP utilization: Through the Model Context Protocol (MCP), Claude automatically has relevant context injected before answering.
• Privacy and cost: After downloading the embedding model once, it operates completely offline, so there are no API costs and no worries about data leakage.
• Broad compatibility: Works with all MCP-supporting clients, including Claude Desktop, Claude Code, and Cursor.