Web Quality Skills
Agent skills for web performance and quality based on Lighthouse: Core Web Vitals, accessibility (WCAG), SEO and best practices.
Test results
Run with our skill harness: the skill alone in a throwaway project, invoked by name, and the real output file checked. Skills are tested in Claude Code and Cursor only so far.
| Client | Result | Last passed | What we checked |
|---|---|---|---|
| Claude Code 2.1.296 (Claude Code) | Passed Tested 2026-10-26 | 2026-10-26 | a11y static check (need 5 of 6 incl token): {'token': True, 'html lang': True, 'img alt': True, 'email input labelled': True, 'real button (not div onclick)': True, '#bbb low contrast fixed': True} |
| Cursor 2026.10.22-27dcf5f | Passed Tested 2026-10-26 | 2026-10-26 | a11y static check (need 5 of 6 incl token): {'token': True, 'html lang': True, 'img alt': True, 'email input labelled': True, 'real button (not div onclick)': True, '#bbb low contrast fixed': True} |
Skill version: github.com/addyosmani/web-quality-skills @ afa8da94 (2026-08-24).
Get it
The skill’s files and install instructions are in its repository: github.com/addyosmani/web-quality-skills.