Memory MCP Server

Official

Give your AI persistent memory that survives across conversations

memorypersistenceknowledge-graphofficiallocal

The official Memory MCP server implements a knowledge graph that your AI assistant can read and write across conversations. By default, Claude's memory resets after every conversation. With the Memory server, you can instruct it to remember facts, preferences, projects, and context that persist indefinitely. The knowledge is stored as a local JSON file on your machine — nothing goes to a cloud service. Essential for developers who want a consistent AI assistant that knows their preferences.

Install Config

Config file: ~/Library/Application Support/Claude/claude_desktop_config.json· Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "memory": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-memory"
      ]
    }
  }
}

Available Tools (8)

Tool name	Description
create_entities	Add new entities (people, projects, concepts) to memory
create_relations	Create relationships between entities
add_observations	Add facts or observations about an entity
delete_entities	Remove entities from the knowledge graph
delete_observations	Remove specific observations
delete_relations	Remove relationships between entities
read_graph	Read the entire knowledge graph
search_nodes	Search for specific nodes in the graph

Example Prompts

“Remember that I prefer TypeScript over JavaScript”
“What do you know about my current project?”
“Remember that I'm working on a Next.js app called QuickUtil”
“Forget everything you know about my old job”
“What are my coding preferences you've stored?”

Pros & Cons

Pros

Persistent memory across all conversations
All data stored locally — never sent to a server
Structured knowledge graph — not just raw text

Cons

Memory must be explicitly instructed — AI won't remember automatically
Knowledge graph can become large and unwieldy over time

Who Is This For?

·Power users who want a consistent AI assistant that knows their preferences
·Developers who want AI to remember project context across sessions

When to use: Use when you're frustrated by having to re-explain your preferences and context at the start of every conversation. Set it up and instruct the AI to remember important facts about you and your work.