# File Path Normalizer and Traversal Checker MCP for AI Agents AI Agent Connect

> File Path Normalizer and Traversal Checker MCP prevents directory traversal attacks and cleans up messy file paths. It resolves relative segments like dots and double dots to ensure your agent always works with absolute, predictable paths while flagging any attempts to break out of authorized folders.

## Overview
- **Category:** security
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_a9Z56bYkzjH5iZW0nZ0ynnw84PHo73a595g844sm/ai-agent-connect
- **Tags:** path, traversal, normalization, security-audit, filepath

## Description

Managing file systems with an AI agent can be dangerous if you aren't careful about how paths are handled. If an agent tries to access a file using relative jumps, it might accidentally wander into sensitive system directories. This MCP acts as a security layer between your agent and the file system. It cleans up messy, relative path strings into clean, absolute versions that are easy to work with. More importantly, it acts as a gatekeeper. It checks if a requested path is actually staying within the folder you intended it to stay in. If an agent tries to use a path that attempts to escape its assigned root, the system catches it immediately. By connecting this to your AI client through the Vinkius catalog, you add a critical safety check to every file operation your agent performs, ensuring it stays exactly where you told it to work.

## Tools

### check_traversal_boundary
Checks if a path is trying to break out of its assigned root folder. It prevents unauthorized access to sensitive directories.

### get_path_security_audit
Provides a full security snapshot of a path. It returns the normalized path and the detected risk level.

### normalize_path
Cleans up raw path strings by resolving all relative segments. It turns messy paths into a single, clean version.

## Prompt Examples

**Prompt:** 
```
Can you clean up this path for me: '/home/user/./downloads/../documents/file.txt'?
```

**Response:** 
```
The cleaned version of that path is:

`/home/user/documents/file.txt`
```

**Prompt:** 
```
Is it safe to access '/var/log/../../etc/shadow' if my root is '/var/log'?
```

**Response:** 
```
No, that path is **unsafe**. 

It attempts to escape the `/var/log` directory to access sensitive system files. This is a directory traversal violation.
```

**Prompt:** 
```
Give me a security report for the path './config.yaml' inside the '/app/data' folder.
```

**Response:** 
```
Here is the security audit for that path:

| Attribute | Value |
| :--- | :--- |
| **Normalized Path** | `/app/data/config.yaml` |
| **Risk Detected** | No |
| **Security Tier** | SECURE |
```

## Capabilities

### Clean up messy file paths
Converts paths with relative markers like dots into clean, absolute strings.

### Block directory escapes
Detects and flags any attempt to use traversal sequences to access unauthorized folders.

### Audit path security
Generates a full security report including risk status and security tiers for a specific path.

### Validate root boundaries
Confirms that a target file remains within its designated parent directory.

## Use Cases

### Preventing unauthorized file access
An agent is asked to read a config file, but the user provides a path like '../../etc/passwd'. The MCP catches the escape attempt immediately.

### Cleaning up messy user inputs
A developer uses normalize_path to turn a user's messy input like './docs/../images/pic.png' into a clean, usable path.

### Automated security auditing
A security engineer runs get_path_security_audit on a batch of file requests to identify high-risk path patterns.

### Sandboxing agent file operations
A DevOps engineer uses check_traversal_boundary to ensure an autonomous agent stays strictly within a specific project folder.

## Benefits

- Stop directory traversal attacks by catching escape attempts before they happen.
- Get clean, absolute paths every time by using normalize_path to resolve relative segments.
- Verify folder boundaries instantly with check_traversal_boundary to keep agents contained.
- Get a full security overview of any file request using get_path_security_audit.
- Reduce file system errors by ensuring all paths are in a consistent, predictable format.

## How It Works

The bottom line is that it turns unpredictable file paths into safe, predictable ones.

1. Connect the MCP to your AI client via Vinkius
2. Pass a raw or relative path string to the agent
3. Receive a cleaned path or a security alert if a traversal risk is found

## Frequently Asked Questions

**How does the File Path Normalizer and Traversal Checker prevent security leaks?**
It detects when a path tries to use special characters like '..' to move up into parent directories, flagging these attempts before they can access unauthorized files.

**Can I use File Path Normalizer and Traversal Checker to clean up messy paths?**
Yes. It can take any path containing relative markers and resolve them into a clean, absolute path that is much easier for your agent to use.

**Does File Path Normalizer and Traversal Checker work with any AI client?**
Yes, as long as your client is MCP-compatible, such as Claude, Cursor, or Windsurf, you can connect it and start using the tools immediately.

**What happens if an agent tries to access a forbidden folder?**
The MCP will identify that the path has crossed the authorized boundary and will flag the action as a risk, preventing the unauthorized access.

**Is it possible to get a full report on a path's safety?**
Yes, you can request a complete security audit that provides the normalized path, the risk status, and the assigned security tier.

**How can I clean up a path with '..' segments?**
Use the `normalize_path` tool to resolve all relative markers into a clean, absolute-style string.

**Can this detect directory traversal attacks?**
Yes, the `check_traversal_boundary` tool identifies if a resolved path attempts to escape its assigned root directory.

**What information does the security audit provide?**
The `get_path_security_audit` tool returns the normalized path, indicates if a risk is detected, and provides the specific security tier classification.