Where does the server store memory data?
By default, memory is stored in `memory.json` in the server directory. Use the `MEMORY_FILE_PATH` environment variable to set a custom path.
Knowledge Graph Memory Server MCP Server
@edobez
基本情報
Knowledge Graph Memory Server MCP Server について
MCP server for enabling memory for Claude through a knowledge graph
Knowledge Graph Memory Server MCP Server の設定
以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。
{
"mcpServers": {
"memory-python": {
"command": "uvx",
"args": [
"--refresh",
"--quiet",
"mcp-memory-py"
],
"env": {
"MEMORY_FILE_PATH": ""
}
}
}
}Knowledge Graph Memory Server MCP Server のツール
9Create multiple new entities in the knowledge graph
Create multiple new relations between entities
Add new observations to existing entities
Remove entities and their relations
Remove specific observations from entities
Remove specific relations from the graph
Read the entire knowledge graph
Search for nodes based on query
Retrieve specific nodes by name
概要
What is Knowledge Graph Memory Server?
Knowledge Graph Memory Server is a Python implementation of persistent memory using a local knowledge graph. It enables Claude to remember information about the user across different chat sessions by storing entities, relations, and observations in a JSON file.
How to use Knowledge Graph Memory Server?
Add the server configuration to your claude_desktop_config.json using uvx with the mcp-memory-py package. Optionally set the MEMORY_FILE_PATH environment variable to specify a custom memory file location. For chat personalization, use the provided system prompt in Claude.ai Project custom instructions.
Key features of Knowledge Graph Memory Server
- Creates, reads, updates, and deletes entities in a knowledge graph
- Manages directed relations between entities with active voice
- Stores atomic observations attached to specific entities
- Provides search and retrieval tools (
search_nodes,open_nodes) - Persists memory to a local JSON file
- Supports custom memory file path via environment variable
Use cases of Knowledge Graph Memory Server
- Make Claude remember user identity, preferences, and behaviors across chats
- Allow Claude to recall past interactions and update memory with new information
- Store and query structured knowledge about people, organizations, and events
- Maintain a persistent graph of personal and professional relationships
よくある質問
What runtime is required?
The server runs via `uvx` and requires Python. It is a port of the Node.js reference server and uses the MCP protocol.
What debugging tools are available?
You can use `npx @modelcontextprotocol/inspector` to debug the server, and set `DEBUG_LOGGING` environment variable for daily log files (development only).
How can I customize the memory behavior?
Use the provided system prompt to guide Claude on when and how to create entities, relations, and observations. The prompt can be adjusted for different use cases.
What happens if I try to create a duplicate entity or relation?
Duplicate entities are ignored; duplicate relations are skipped. The operations are silent on duplicates.
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