Last week I wrote about running my WCAG checker against gov.uk and finding that every one of the 72 "violations" was a bug in my checker. Fixing those left me with an engine I trust on real sites, packaged as a Chrome extension. But the people who most need an accessibility check right now are not people. They are coding agents. Claude Code, Cursor and friends generate a huge share of new HTML, and they ship <img> without alt , grey-on-white placeholders and outline: none just li...