# Virtual Filesystem

> Use this tool when you need to manage file systems in a secure and isolated manner, solving problems such as data sharing and access control across multiple agents. It provides a PostgreSQL-backed virtual filesystem with POSIX operations and row-level security (RLS), accepting file inputs and producing stored file outputs. Ideal for use cases requiring session isolation and shared storage in a controlled environment.

Canonical page: https://skillsregistry.net/skills/io-github-lu-zhengda-virtual-fs  
JSON: https://api.skillsregistry.net/v1/skills/io-github-lu-zhengda-virtual-fs

## Description

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

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** unverified

## Facts

- **Version:** 0.2.1
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** database
- **Updated:** 2026-04-19

## Source

- **Source listing:** [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/io.github.lu-zhengda%2Fvirtual-fs)
- **Repository:** <https://github.com/lu-zhengda/mcp-virtual-fs>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "io-github-lu-zhengda-virtual-fs"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/io-github-lu-zhengda-virtual-fs` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/io-github-lu-zhengda-virtual-fs/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt