MCP-DBMEM

A poorly written Go-based memory management system for the Metoro Control Protocol (MCP), providing a persistent knowledge graph implementation.

Overview

MCP-DBMEM is a memory management service that implements a knowledge graph using PostgreSQL as the backend storage. It provides a set of tools for managing entities, relations, and observations within the knowledge graph.

Features

• Create and manage entities in the knowledge graph
• Create and manage relations between entities
• Add and manage observations for entities
• Search and query the knowledge graph
• Delete entities, relations, and observations
• Full graph reading capabilities

Tools

The service provides the following tools:

• create_entities: Create multiple new entities in the knowledge graph
• create_relations: Create multiple new relations between entities (in active voice)
• add_observations: Add new observations to existing entities
• delete_entities: Delete multiple entities and their associated relations
• delete_observations: Delete specific observations from entities
• delete_relations: Delete multiple relations from the graph
• read_graph: Read the entire knowledge graph
• search_nodes: Search for nodes based on a query
• open_nodes: Open specific nodes by their names

Installation

Claude

Docker

{
  "mcpServers": {
    "memory": {
      "command": "docker",
      "env": {
        "DB_ADDRESS": "localhost",
        "DB_USER": "mcp-dbmem",
        "DB_PASSWORD": "mcp-dbmem",
        "DB_DATABASE": "mcp-dbmem"
      },
      "args": [
        "run",
        "-i",
        "--rm",
        "tyrm/mcp-dbmem",
        "direct"
      ]
    }
  }
}

Binary

{
  "mcpServers": {
    "memory": {
      "command": "/path/to/mcp-dbmem",
      "env": {
        "DB_ADDRESS": "localhost",
        "DB_USER": "mcp-dbmem",
        "DB_PASSWORD": "mcp-dbmem",
        "DB_DATABASE": "mcp-dbmem"
      },
      "args": [
        "direct"
      ]
    }
  }
}

Development

Prerequisites

• Go 1.x
• PostgreSQL
• Make (for build commands)

Building

make build

Running

./bin/mcp-dbmem

Project Structure