MCP Security Index

Is Filesystem safe to install?

Anthropic (MCP reference) · Dev tools · stdio (local process)

Blimited exposureSource
B
Grade
35/100
Blast radius
14
Tools
1
Capabilities

Capabilities

What Filesystem declares it can do

A server's blast radius is the most powerful thing each of its tools can do. This grades the tools it declares, read-only, not whether it is secure.

  • Execute0
  • Delete0
  • Write3
  • Read11
  • mediumTool declares a high-privilege capability×3

Tools

Every tool Filesystem exposes

14 tools

Control

Govern Filesystem with AxioRank

14 tools

Installed as-is, all 14 of Filesystem's tools are callable by your agent without restriction, including any that write, delete, or execute.

Flip the switch to see the policy AxioRank would apply.

Advisories

Informational content flags

Keyword matches in tool descriptions and schemas. These are shown for transparency and are not part of the grade.

  • mediumWildcard scope / permission

Install

Add Filesystem to your client

Drop this into your MCP client config (Claude Desktop, Cursor, and others).

mcp.json
{
  "mcpServers": {
    "filesystem": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-filesystem",
        "/tmp"
      ]
    }
  }
}

Embed

Show the grade in your README

Links back to this page and updates when the grade changes.AxioRank grade for Filesystem
[![AxioRank MCP Security Index grade for Filesystem](https://axiorank.com/api/badge/mcp/filesystem.svg)](https://axiorank.com/mcp-index/filesystem)

How it works

About this grade

The grade reflects the blast radius of what Filesystem declares it can do, read-only, not whether it is secure or trustworthy, and not a judgment of the vendor. Maintain this server? Claim this listing or request a re-scan. See the methodology.

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Let your agents use Filesystem safely

Route this server through AxioRank to allowlist its tools, hold risky calls for approval, and keep a signed audit trail of every action.

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