Melchizedek

What is Melchizedek?

Melchizedek is a persistent memory server for Claude Code that automatically indexes every conversation and provides production-grade hybrid search (BM25 + vectors + reranker) via MCP tools. It runs 100% locally with zero configuration, zero API keys, and no cloud dependencies.

How to use Melchizedek?

Install via npm install -g melchizedek, then add the MCP server to Claude Code with claude mcp add --scope user melchizedek -- melchizedek-server. For automatic indexing, hooks need to be configured in ~/.claude/settings.json (pre-configured for marketplace installs). After setup, restart Claude Code. Indexing starts automatically. Use MCP tools like m9k_search, m9k_context, and m9k_full to search and retrieve past conversations.

Key features of Melchizedek

• 100% local, zero config, zero API keys
• Hybrid search: BM25 + text and code vectors + reranker
• Progressive retrieval (search/context/full) to save tokens
• Automatic indexing of all Claude Code conversations
• 16 MCP tools for search, memory management, and configuration
• Retroactive indexing of existing conversation history

Use cases of Melchizedek

• Quickly find past debugging sessions and error solutions
• Recall architectural decisions and code patterns across projects
• Automatically index every conversation without manual saving
• Retrieve full context of past Claude Code interactions

FAQ from Melchizedek

What runtime does Melchizedek require?

Melchizedek runs on Node.js and is installed via npm. It requires no external services or API keys.

Where is conversation data stored?

All data is stored locally in a single SQLite file at ~/.melchizedek/memory.db. The file uses WAL mode and is not sent to any cloud service.

Does Melchizedek work offline?

Yes, Melchizedek is 100% offline. No cloud, no API keys, no internet connection required for search or indexing.

How is Melchizedek different from other memory plugins?

Melchizedek acts as a search engine that indexes raw conversation transcripts, supporting hybrid search (BM25 + vectors + reranker), progressive retrieval, and zero-config automatic indexing. It offers 16 MCP tools, supports dual embeddings (text + code), and runs as a singleton daemon for multi-window use.

Is Melchizedek free and open source?

Yes, Melchizedek is released under the MIT license and is completely free to use. Donations are accepted via PayPal or Buy Me a Coffee.