Web Interface Guidelines
Review files for compliance with Web Interface Guidelines.
How It Works
- Fetch the latest guidelines from the source URL below
- Read the specified files (or prompt user for files/pattern)
- Check against all rules in the fetched guidelines
- Output findings in the terse
file:lineformat
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.
Usage
When a user provides a file or pattern argument:
- Fetch guidelines from the source URL above
- Read the specified files
- Apply all rules from the fetched guidelines
- Output findings using the format specified in the guidelines
If no files specified, ask the user which files to review.
When To Use
- User asks to review, audit, or check UI code for best practices
- Checking accessibility, UX quality, or Web Interface Guidelines compliance
- User says "review my UI", "audit design", "check my site", or "check accessibility"
- Validating frontend code against the Vercel Web Interface Guidelines ruleset
Boundaries
- Not for building or implementing UI; this skill only reviews existing code
- Not for backend, API, or non-UI code review
- Skip when the user needs visual design feedback on mockups rather than code-level audits
- Do not cache guidelines across sessions; always fetch fresh from the source URL
Output
- A findings report in terse
file:lineformat as specified by the fetched guidelines - Each finding references the specific guideline rule that was violated
- A prompt for file selection if no files were specified by the user
Verification
- Guidelines were freshly fetched from the source URL before the review
- All specified files were read and checked against the full ruleset
- Findings use the exact output format defined in the fetched guidelines document
- No false positives from rules that do not apply to the file's framework or context
Sibling skills
The four design skills compose into a pipeline: spec → build → review. Hand off when the request crosses an axis.
design-critique— visual taste audit against a closed 37-pattern slop catalog. Complementary to rule-compliance review, not redundant: this skill catches WIG violations, that skill catches AI-slop tells. Run both for full review coverage.frontend-design— generative UI builder. Run this skill againstfrontend-designoutput for code-level rule compliance.design-md— DESIGN.md token spec; orthogonal to UI-rule compliance.