Melchizedek

Melchizedek is an open-source, production-grade persistent memory plugin for Claude Code that automatically indexes all conversations and provides advanced hybrid search across all your projects and sessions. It runs 100% locally, requires zero configuration or API keys, and leverages a Model Context Protocol (MCP) server for searches including keyword and semantic matching with BM25, vectors, and rerankers. Melchizedek is ideal for developers and Claude Code users who need fast, context-aware retrieval of historical conversations, code snippets, debugging sessions, and knowledge, all while keeping data private on their device.