Virtual Fs vs Filesystem

A side-by-side look at the Virtual Fs and Filesystem MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Virtual Fs logoVirtual FsFile Systems · Local subprocess (stdio)PostgreSQL-backed virtual filesystem for AI agents with persistent, session-isolated storage.51GoodAuth: not declaredFilesystem logoFilesystemFile Systems · Local subprocess (stdio)Secure file operations with configurable access controls.85ExcellentAuth: no auth required

Verdict: choose Virtual Fs for file systems work as a local process; choose Filesystem for file systems as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Virtual Fs logoChoose Virtual Fs when

  • You need dedicated capabilities in the File Systems domain.
  • You prefer a local stdio subprocess transport.
  • You have the keys it needs: DATABASE_URL.
  • You want tools like read, write, append.
Explore Virtual Fs

Filesystem logoChoose Filesystem when

  • You need dedicated capabilities in the File Systems domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: No auth required.
  • You want tools like path, head, tail.
Explore Filesystem

Feature & specification comparison

Rows where the two servers differ are marked.

SpecVirtual Fs logoVirtual FsFilesystem logoFilesystem
CategoryFile SystemsFile Systems
Quality signal51/100 · Good85/100 · Excellent
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredNo auth required
PricingNot declaredFree
Required env varsDATABASE_URLNone listed
Verified ownerCommunity listing Verified
GitHub stars391,540
Directory activity 1 views 0 installs 0 upvotes 11 views 0 installs 0 upvotes
Tools1117

Tools & capabilities

Virtual Fs tools 11

  • readRead file contents
  • writeWrite file (creates parents automatically)
  • appendAppend to file (creates if missing)
  • statCheck existence and get metadata
  • lsList directory (dirs first, then alphabetical)
  • mkdirCreate directory and parents (mkdir -p)
  • rmRemove file or directory recursively
  • mvMove/rename file or directory
  • globFind files by glob (e.g., `**/*.ts`, `**/*.{js,ts}`)
  • grepSearch file contents by regex
  • storesList all persistent store names

Filesystem tools 17

  • path
  • head
  • tail
  • paths
  • content
  • edits
  • oldText
  • newText
  • dryRun
  • sortBy
  • source
  • destination
  • +5 more on the listing page

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Virtual Fs

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "virtual-fs": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-virtual-fs"
      ],
      "env": {
        "DATABASE_URL": "YOUR_DATABASE_URL_HERE"
      }
    }
  }
}

Filesystem

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem"
      ]
    }
  }
}

Frequently asked questions

Virtual Fs is categorized under File Systems and uses a local stdio subprocess. Filesystem belongs to File Systems and uses a local stdio subprocess. Pick Virtual Fs for file systems work and Filesystem for file systems.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

Virtual Fs has no declared pricing — check the project's own site. Filesystem is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add virtual-fs and filesystem as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Virtual Fs has a quality signal of 51/100 (Good) with 1 views, 0 installs and 3 GitHub stars. Filesystem has 85/100 (Excellent) with 11 views, 0 installs and 91,540 GitHub stars.