Virtual Filesystem

io.github.lu-zhengda/virtual-fs·v0.2.2·Databases

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

Trust verdict · v1 advisory · method

REVIEWstatus: PARTIALfresh until 2026-05-31 01:58 UTC

screened 2026-05-31tier: scannedgranularity: description-level

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“No unauthorized actions”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). History is paid-tier and not shown here.

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Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-lu-zhengda-virtual-fs)](https://mcpindex.ai/server/io-github-lu-zhengda-virtual-fs)

HTML

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Environment variables

DATABASE_URL

requiredsecret

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

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

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Install

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "virtual-fs": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-virtual-fs"
      ],
      "env": {
        "DATABASE_URL": "<your-database_url>",
        "VFS_AUTO_INIT": "<vfs_auto_init>",
        "VFS_SESSION_ID": "<vfs_session_id>",
        "VFS_ENABLE_RLS": "<vfs_enable_rls>"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "virtual-fs": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-virtual-fs"
      ],
      "env": {
        "DATABASE_URL": "<your-database_url>",
        "VFS_AUTO_INIT": "<vfs_auto_init>",
        "VFS_SESSION_ID": "<vfs_session_id>",
        "VFS_ENABLE_RLS": "<vfs_enable_rls>"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y mcp-virtual-fs

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-lu-zhengda-virtual-fs

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v0.2.2
category: Databases
verdict expires: 2026-05-31
quality: 83 / 100
operator: lu-zhengda

Provenance

Verdict history is anchored to Bitcoin via OpenTimestamps. The free tier returns the current verdict only; the anchored record is served on the authenticated tier.

Links

Repository →Website →