---
name: reviewing-web-design
description: Fetch Vercel's live web-interface-guidelines and check UI code against them. Use when asked to "review my UI against web interface guidelines", "check accessibility", "audit design against Vercel guidelines", "review UX compliance", "check my site against Vercel best practices", or "run web-interface-guidelines on my components".
metadata:
  author: vercel
  version: "1.0.0"
  argument-hint: <file-or-pattern>
---

# Web Interface Guidelines

Review files for compliance with Web Interface Guidelines.

## How It Works

1. Fetch the latest guidelines from the source URL below
2. Read the specified files (or prompt user for files/pattern)
3. Check against all rules in the fetched guidelines
4. Output findings in the terse `file:line` format

## Guidelines Source

Fetch fresh guidelines before each review:

```
https://raw.githubusercontent.com/vercel-labs/web-interface-guidelines/main/command.md
```

Use WebFetch to retrieve the latest rules. The fetched content contains all the rules and output format instructions.

If the URL returns a non-200 response or is unreachable, inform the user that the guidelines could not be fetched and ask them to paste the rules manually or try again later. Do not proceed with a review using cached or assumed rules.

## Usage

When a user provides a file or pattern argument:
1. Fetch guidelines from the source URL above
2. Read the specified files
3. Apply all rules from the fetched guidelines
4. Output findings using the format specified in the guidelines

If no files specified, ask the user which files to review.