How does this MCP prevent path traversal?

It uses deterministic string manipulation to resolve all .. segments and redundant slashes before checking if the final path sits within the allowed root.

Can I use this with Cursor or VS Code?

Yes, any MCP-compatible client like Cursor, VS Code, or Windsurf can use this to secure filesystem operations.

What happens if an agent tries to access a forbidden file?

The validate_path_access capability will return a denial status along with the specific reason for the violation.

Do I need to host this myself?

No, Vinkius hosts and manages the MCP for you, so it is ready to use as soon as you connect your client.

Can I see what a path will look like before it is validated?

Yes, you can use the preview_path_expansion capability to see how a complex path is cleaned and resolved.

How does the server prevent path traversal attacks?

The server resolves all .. segments and redundant slashes using deterministic string manipulation before checking if the resulting path starts with an allowed root or matches a forbidden blocklist.

What directories are blocked by default?

The server blocks access to sensitive system paths including /etc, /root, and ~/.ssh via a hardcoded blocklist.

Can I use this to audit my existing configuration?

Yes, you can use the analyze_root_integrity capability to check if any of your provided root directories overlap with forbidden system paths.

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Connect Filesystem Sandbox Boundary Enforcer to your AI

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Keep your agent locked within safe directory boundaries.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through Filesystem Sandbox Boundary Enforcer.

01
Validate path access
This capability checks if a specific file system request is safe and permitted under your current security policies. It returns the permission status, the resolved path, and the reason if access is denied.
02
Analyze root integrity
This capability audits your list of allowed directories to ensure your configuration doesn't accidentally include forbidden zones. It helps you verify that your sandbox setup is actually secure.
03
Preview path expansion
This capability shows you exactly how a messy or complex path will be cleaned and resolved. It demonstrates how the MCP handles segments and redundant slashes before any actual permission checks happen.

Real work

What teams actually run

Coding Agent Sandboxing

Restrict a coding agent in VS Code to a specific project folder so it cannot touch system files.

Automated Data Processing

Ensure an agent processing CSV files stays within the designated data directory.

Security Policy Testing

Use path expansion previews to verify that security rules correctly catch malicious path patterns.

Configuration Auditing

Verify that a list of allowed mount points doesn't contain any dangerous or forbidden paths.

One connector, every AI

Filesystem Sandbox Boundary Enforcer works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Filesystem Sandbox Boundary Enforcer to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

686ms average. Fast in production.

Filesystem Sandbox Boundary Enforcer is checked daily against the live service.

Daily averagePeak 781ms

Oct 3Today

Fastest day: 560ms
Slowest day: 781ms
14-day trend: Improving-10%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Filesystem Sandbox Boundary Enforcer, so you can see the experience inside your AI.

It does not authenticate your account with Filesystem Sandbox Boundary Enforcer. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Filesystem Sandbox Boundary Enforcer Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_WuAO9mSf3KMorMN8oyA5O0AAZzSr5E7tzohiykdL/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Filesystem Sandbox Boundary Enforcer capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "filesystem-sandbox-boundary-enforcer-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_WuAO9mSf3KMorMN8oyA5O0AAZzSr5E7tzohiykdL/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Filesystem Sandbox Boundary Enforcer in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Filesystem Sandbox Boundary Enforcer owners hand off.

Developers and security engineers who need to grant AI agents filesystem access without risking system integrity.

01
DevOps Engineers
They use this to sandbox automated agents running deployment or monitoring scripts.
02
Software Developers
They hand off file manipulation tasks to agents in IDEs like Cursor or VS Code while maintaining local security.
03
Security Researchers
They use the path expansion and validation capabilities to test for traversal vulnerabilities in automated workflows.

FAQ

Questions Filesystem Sandbox Boundary Enforcer owners ask.

01
How does this MCP prevent path traversal?
It uses deterministic string manipulation to resolve all .. segments and redundant slashes before checking if the final path sits within the allowed root.
02
Can I use this with Cursor or VS Code?
Yes, any MCP-compatible client like Cursor, VS Code, or Windsurf can use this to secure filesystem operations.
03
What happens if an agent tries to access a forbidden file?
The validate_path_access capability will return a denial status along with the specific reason for the violation.
04
Do I need to host this myself?
No, Vinkius hosts and manages the MCP for you, so it is ready to use as soon as you connect your client.
05
Can I see what a path will look like before it is validated?
Yes, you can use the preview_path_expansion capability to see how a complex path is cleaned and resolved.
06
How does the server prevent path traversal attacks?
The server resolves all .. segments and redundant slashes using deterministic string manipulation before checking if the resulting path starts with an allowed root or matches a forbidden blocklist.
07
What directories are blocked by default?
The server blocks access to sensitive system paths including /etc, /root, and ~/.ssh via a hardcoded blocklist.
08
Can I use this to audit my existing configuration?
Yes, you can use the analyze_root_integrity capability to check if any of your provided root directories overlap with forbidden system paths.

Explore

More in Security

Connect Filesystem Sandbox Boundary Enforcer to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Validate path access

Analyze root integrity

Preview path expansion

What teams actually run

Coding Agent Sandboxing

Automated Data Processing

Security Policy Testing

Configuration Auditing

Building your own app? The connector is yours to use.

Filesystem Sandbox Boundary Enforcer Connector

Claude Desktop

DevOps Engineers

Software Developers

Security Researchers

How does this MCP prevent path traversal?

Can I use this with Cursor or VS Code?

What happens if an agent tries to access a forbidden file?

Do I need to host this myself?

Can I see what a path will look like before it is validated?

How does the server prevent path traversal attacks?

What directories are blocked by default?

Can I use this to audit my existing configuration?

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