Virtual Filesystem MCP Server

io.github.lu-zhengda/virtual-fs

Repository Registry

What is the Virtual Filesystem MCP server?

PostgreSQL-backed virtual filesystem for agents: session isolation, shared stores, POSIX ops, RLS.

How to install Virtual Filesystem

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

DATABASE_URL
required
secret
PostgreSQL connection string (e.g. postgresql://user:pass@host:5432/dbname)
VFS_AUTO_INIT
Auto-create database tables on startup (set to 'true' for first run)
VFS_SESSION_ID
Deterministic session ID for resumable sessions across restarts
VFS_ENABLE_RLS
Enable PostgreSQL Row Level Security for database-enforced session isolation

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "virtual-fs": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-virtual-fs"
      ],
      "env": {
        "DATABASE_URL": "<YOUR_DATABASE_URL>",
        "VFS_AUTO_INIT": "<YOUR_VFS_AUTO_INIT>",
        "VFS_SESSION_ID": "<YOUR_VFS_SESSION_ID>",
        "VFS_ENABLE_RLS": "<YOUR_VFS_ENABLE_RLS>"
      }
    }
  }
}

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