web-design-guidelines
Vercel Labs' official skill, reviewing your interface code against the Web Interface Guidelines, the public reference the same team maintains in a separate repository. Its one distinguishing trait: it embeds no frozen copy of the rules, it fetches the current reference file on every run, so it does not age between install day and audit day. Findings come back in file:line form, usable straight from the editor. It ships inside a collection of Vercel skills installable in one command, MIT licensed.
Strengths
- Rules are fetched on every run, so an old install never audits against a stale reference
- The reference is public and separate from the skill, so you can read it, cite it and argue with it
- Findings in file:line form, usable in your editor without translation
- Vercel's own MIT-licensed skill, installable in one command along with the rest of the collection
Limitations
- Depends on a remote repository at every run, so offline, or when the file moves, the audit shifts under you
- It checks against a general reference and knows nothing about your in-house design system
- Two audits months apart are not comparable, because the rule base may have moved
Best for
- Defending a review finding to a team by pointing at the published rule rather than at your own opinion
- An accessibility and usability pass before shipping, on a front end with no established design system
- A non-technical profile who wants to read the findings and check the cited rule for themselves