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Memory Vault

mihaibuilds/memory-vault

Gives Claude four tools to store and retrieve memories from a self-hosted Postgres database with pgvector. It runs hybrid search combining semantic similarity and keyword matching, so you can recall past decisions or project context without re-explaining everything. The remember tool auto-classifies and embeds text, recall searches across memory spaces, forget soft-deletes by chunk ID, and memory_status reports database health. Runs on stdio transport and connects to your local Postgres instance. Useful if you want persistent context across Claude sessions without cloud storage or if you're building AI tools that need to remember state between conversations.

GitHub stars
67
tools
3
auth
Secret needed
transport
STDIO
env vars
5
last updated
Oct 9, 2026
View on GitHub

Tools

3 tools

Public tool metadata for what this MCP can expose to an agent.

storeStore a JSON value under a key2 params

Store a JSON value under a key

Parameters* required
keystring
valueobject
retrieveRetrieve a JSON value by key1 params

Retrieve a JSON value by key

Parameters* required
keystring
deleteDelete a stored JSON value by key1 params

Delete a stored JSON value by key

Parameters* required
keystring

Sponsors

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Configuration

DB_HOST*

Hostname of the Postgres+pgvector instance Memory Vault connects to (e.g. 'host.docker.internal' when Postgres runs on the host, 'localhost' when running natively, or the service name when both run in compose)

DB_PORT*default: 5432

Postgres port

DB_NAME*default: memory_vault

Postgres database name

DB_USER*default: memory_vault

Postgres user with read/write access to the memory vault database

DB_PASSWORD*secret

Postgres password for DB_USER

Readme

Memory Vault

Tests License: MIT Python 3.11+ Latest Release Docker Image MCP Registry Ruff

The memory database for AI applications. Self-hosted Postgres + pgvector with hybrid search, MCP-native, and a knowledge graph baked in.

View the full README on GitHub

Details

Repository
github.com/mihaibuilds/memory-vault
Website
mihaibuilds.com
Categories
Databases, AI & LLM Tools, Search & Web Crawling
Package
ghcr.io/mihaibuilds/memory-vault-mcp:1.6.1
Transport
STDIO
Auth
Required
Registry
MCP registry, active

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