Memory MCP ignores custom storage path setting

[Fionhurong]

I've been trying to configure the MCP memory server to store data in a custom location, but it continues to store the memory.json file in the NPX temporary directory instead.

Configuration

In my Claude desktop config file, I've specified a custom path:

"memory": {
  "command": "npx",
  "args": [
    "-y",
    "@modelcontextprotocol/server-memory"
  ],
  "env": {
    "MEMORY_FILE_PATH": "/Users/XX/Library/Application Support/Claude/mcp/memory.json"
  }
}

Actual Behavior

Despite setting the MEMORY_FILE_PATH environment variable, the memory.json file is still being created in the NPX temporary directory:

/Users/XX/.npm/_npx/15b07286cbcc3329/node_modules/@modelcontextprotocol/server-memory/dist/memory.json

Additional Information

• I've created the target directory and ensured it has appropriate permissions
• The memory functionality works correctly, but uses the wrong file location
• Claude can read/write to the temporary file location, but this isn't persistent

Can someone help explain why the environment variable isn't being recognized, or if there's a different way to specify a custom storage location? This is concerning because NPX temporary directories may be cleaned up, potentially losing all memory data.

[darrencroton]

Same for me