Show HN: Memory Vault – local-first memory, hybrid search, knowledge graph

Category: database

Tags: memory-database, hybrid-search, knowledge-graph, ai-memory, self-hosted

Score: 6.8/10 (Innovation: 6, Technical: 7, Documentation: 7, Utility: 7)

Memory Vault is a local-first memory database for AI applications, combining hybrid search, a knowledge graph, and MCP integration to give persistent memory to tools like Claude. It stands out by consolidating vector, full-text, and relational storage in a single Postgres instance with a self-hosted, CPU-friendly design, making persistent AI memory practical for developers.

Target audience: backend devs, AI engineers, data engineers

Repository: https://github.com/MihaiBuilds/memory-vault · Python · MIT · 1 stars

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