# Memory Vault (MCP server)

> Memory Vault is an MCP server that adds database tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Local-first AI memory layer with hybrid search. It has 65 GitHub stars, is released under the MIT license and runs locally with docker run -i --rm -e DB_HOST -e DB_PORT -e DB_NAME -e DB_USER -e DB_PASSWORD ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0.

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

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/MihaiBuilds/memory-vault |
| GitHub stars | 65 |
| License | MIT |
| Language | Python |
| Transport | stdio |
| Packages | docker: ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0 |
| Remote URL | none |
| Needs API key | yes |
| Official | yes |
| Works with | Claude Desktop, Claude Code, Cursor, VS Code |
| Category | Databases |
| Latest release | v1.6.0 (Sep 10, 2026) |
| Last commit | Sep 30, 2026 |
| MCP registry name | io.github.MihaiBuilds/memory-vault |

## Install

### Claude Desktop (claude_desktop_config.json)

```json
{
  "mcpServers": {
    "memory-vault": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DB_HOST",
        "-e",
        "DB_PORT",
        "-e",
        "DB_NAME",
        "-e",
        "DB_USER",
        "-e",
        "DB_PASSWORD",
        "ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0"
      ],
      "env": {
        "DB_HOST": "your-value",
        "DB_PORT": "your-value",
        "DB_NAME": "your-value",
        "DB_USER": "your-value",
        "DB_PASSWORD": "your-value"
      }
    }
  }
}
```

Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards.

### Claude Code

```sh
claude mcp add --env DB_HOST=your-value --env DB_PORT=your-value --env DB_NAME=your-value --env DB_USER=your-value --env DB_PASSWORD=your-value --transport stdio memory-vault -- docker run -i --rm -e DB_HOST -e DB_PORT -e DB_NAME -e DB_USER -e DB_PASSWORD ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0
```

### Cursor (.cursor/mcp.json)

```json
{
  "mcpServers": {
    "memory-vault": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DB_HOST",
        "-e",
        "DB_PORT",
        "-e",
        "DB_NAME",
        "-e",
        "DB_USER",
        "-e",
        "DB_PASSWORD",
        "ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0"
      ],
      "env": {
        "DB_HOST": "your-value",
        "DB_PORT": "your-value",
        "DB_NAME": "your-value",
        "DB_USER": "your-value",
        "DB_PASSWORD": "your-value"
      }
    }
  }
}
```

Project file; use ~/.cursor/mcp.json to enable it in every project.

### VS Code (.vscode/mcp.json)

```json
{
  "inputs": [
    {
      "type": "promptString",
      "id": "db_password",
      "description": "DB_PASSWORD",
      "password": true
    }
  ],
  "servers": {
    "memory-vault": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "DB_HOST",
        "-e",
        "DB_PORT",
        "-e",
        "DB_NAME",
        "-e",
        "DB_USER",
        "-e",
        "DB_PASSWORD",
        "ghcr.io/mihaibuilds/memory-vault-mcp:1.6.0"
      ],
      "env": {
        "DB_HOST": "your-value",
        "DB_PORT": "your-value",
        "DB_NAME": "your-value",
        "DB_USER": "your-value",
        "DB_PASSWORD": "${input:db_password}"
      }
    }
  }
}
```

Config formats checked against the official docs on 2026-10-07.

## Environment variables

- `DB_HOST` (required): Hostname of the Postgres+pgvector instance Memory Vault connects to (e.g. 'host.docker.internal' when Postgres runs on the host, 'localhost' when running…
- `DB_PORT` (required): Postgres port
- `DB_NAME` (required): Postgres database name
- `DB_USER` (required): Postgres user with read/write access to the memory vault database
- `DB_PASSWORD` (secret) (required): Postgres password for DB_USER

## Tools

- `recall`: Search memories with hybrid search (vector + full-text + RRF)
- `remember`: Store a new memory — auto-classified and embedded
- `forget`: Soft-delete a memory by chunk ID
- `purge_forgotten`: Permanently delete memories forgotten more than N days ago
- `move_memory`: Move a memory to another space, rebuilding its graph entries
- `memory_status`: Database health, chunk counts, embedding model info

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---

Canonical page: https://appsgit.com/mcp-servers/memory-vault
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