MCP memory server NO persistent memory.json location! Complete Failure

[shaneholloman]

Persistent Data Location

Is your feature request related to a problem? Please describe.

It's in the title:

Caution

Code version updates will destroy that json file!

I am very relieved I had anticipated that happening and add backup my json yesterday before a restart. Incidentally that will super hard to find that jsonfile ! lol!

current location example: C:\Users\shane\AppData\Local\npm-cache\_npx\15b07286cbcc3329\node_modules\@modelcontextprotocol\server-memory\dist\memory.json

Describe the solution you'd like

For persistent data we need to have server code that will respect a location constant:

    "memory": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-memory"]
      "env": {
        "MCP_MEMORY_DATA_FILE": "c:\\super\\safe\\persistent\\location\\memory.jsonl"
    },

Describe alternatives you've considered

n/a

Additional context

you're doing incredible work! Love the protocol so much ...

[shaneholloman]

The memory does not persist - therefore, is not in fact, is not memory at all. I know that may sound snarky. I don't mean it that way. Just being direct. Maybe, I spend to much time talking to Ai ...

[greenforestpath]

im also having trouble figuring out how to save to memory.json

create_entities seems to do nothing to actually save the file.

so close :) - but currrently not functional

[shaneholloman]

I'm not a JS dev, so I'm shy to PR this code. But nonetheless, it works for me.

here you go: https://github.com/shaneholloman/mcp-knowledge-graph

published here: https://www.npmjs.com/package/mcp-knowledge-graph

[shaneholloman]

I updated the server name, as I intend to develop my own version from here;

    "mcp-knowledge-graph": {
      "command": "npx",
      "args": ["-y", "mcp-knowledge-graph", "--memory-path", "C:/Users/shane/Desktop/memory/memory.jsonl"]
    },

these are now separate servers - DONT run them together yet as I will need to use unique function name before you can do that.

so remove the original if you want to use mine