Memory Vault
open-source AI memory for developers

Self-hosted long-term memory for Claude and the apps you build on it. Postgres + pgvector under the hood, MCP server for Claude Desktop and Claude Code, knowledge graph without an LLM, local LLM chat with retrieved-source citations. MIT-licensed. One command. No cloud. v1.0 released 2026-05-07.

Get it on GitHub   Read the launch post

What's in v1.0

Open-source · MIT · self-hosted · paid PRO tier coming M9

Search

Hybrid search

pgvector HNSW for semantic similarity + tsvector GIN for keyword + Reciprocal Rank Fusion to merge them. Vector-only misses exact terms; keyword-only misses paraphrase. RRF gets both.

Integrate

MCP server for Claude

Four tools — recall, remember, forget, status — callable from Claude Desktop or Claude Code. Claude reads and writes your memory inside any conversation, no copy-paste.

Visualize

Knowledge graph

spaCy NER + co-occurrence extracts entities and relationships from every chunk. No LLM, no per-token cost. Cytoscape force-directed graph with pan, zoom, click-through.

Chat

Local LLM chat with sources

LM Studio integration with a sources panel showing the retrieved chunks behind every answer. Every response is grounded and the grounding is visible.

Build

REST API

Bearer-auth-protected, OpenAPI-documented at /docs. Every dashboard operation is also a documented endpoint — integrate AI memory into any app, any language.

Run

One-command Docker

Postgres, the app, and the spaCy model bundled into a single image. docker compose up -d, open localhost:8000. 163 tests passing in CI.

Try it now

Memory Vault product page →  ·  GitHub repo  ·  Latest release  ·  Launch post

Other things I've built

Database Toolkit for .NET Developers

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NHibernate Code Generator

Generate entities, mappings, and repositories from a JSON configuration file. Full NHibernate project scaffold in seconds.

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SQL to C# POCO Generator

Generate clean C# model classes from SQL CREATE TABLE statements. Drop your SQL, get your POCOs.

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NHibernate XML to Fluent Converter

Convert NHibernate .hbm.xml mappings to Fluent NHibernate C# classes. Migrate away from XML mappings.

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Schema Documentation Generator

Generate complete Markdown documentation from SQL Server schema files. Every table, column, type, and constraint.

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Schema Drift Detector

Compare SQL schema against C# models. Find missing columns, type mismatches, and nullable inconsistencies.

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Migrate

Change Script Generator

Compare two SQL schemas and generate ready-to-run ALTER TABLE scripts. Column adds, drops, type changes.

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About

I'm Mihai. 15+ years writing C#/.NET, Oracle, NHibernate, and industrial automation software. I've spent my career deep in legacy codebases — the kind where XML mappings are everywhere and schema changes break things silently.

Every product here started as a problem I had — at work, or in my own day-to-day. I got tired of the same friction, so I built tools to remove it. Then I thought — other developers probably have the same problems.

I build these in public, on evenings and weekends. The blog tracks the work as it happens.