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mcp/harbor
Cursor

Callosium for Cursor

io.github.callosium/callosium

One shared memory for every AI you use, in plain Markdown files you own.

client:Cursor transport:stdio runtime:npm

Install Callosium in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "callosium": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "callosium"
      ],
      "env": {
        "CALLOSIUM_MODEL_DIR": "<CALLOSIUM_MODEL_DIR>"
      }
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs

Callosium in other clients

Callosium MCP server