Felipe A. Carriço, a UX designer and AI product builder, turns accessibility guidance into context AI coding agents have to follow with A11Y.md:

A11Y.md is not a guideline. It is an accessibility validation protocol and a persistent context architecture for developing accessible software with AI. It is designed to integrate with AI agent systems and human review workflows to ensure certifiable compliance.

By adopting the mental model of Anthropic’s CLAUDE.md—which acts as a system prompt memory for code generation—A11Y.md translates this architecture into a universal, portable governance layer. Instead of generic coding rules, it forces any coding agent (Claude, Cursor, Copilot) to strictly adhere to WCAG 2.2 AA and ADA standards from the very first line of generated UI code.

I appreciate how operational this is. It pairs well with Joost de Valk’s Website Specification, which treats machine-readable standards as part of what a good site does. A11Y.md brings the same idea into the build process: the generator has to carry the accessibility context while it makes the UI. That matters because accessibility failures in generated code are rarely abstract. They show up as broken keyboard paths, silent error states, and interface logic that only works for the person who can see and click everything.

Carriço is blunt about the difference between reading and changing the workflow:

Reading about accessibility is the first step, injecting it into your code is the real goal. Do this right now in your project:

1. Download the Rules: Copy the A11Y.md file from docs/en/ to the root of your application’s repository.
2. Inject into the Prompt: If you use Cursor, GitHub Copilot, or Claude, add this to your global rules file (.cursorrules or Context system):

“Strictly follow the development rules defined in the A11Y.md file.”

3. Use as a Quality Gate: Before merging important PRs, use the checklist in docs/en/templates/REPORT.md.

If you do not perform the steps above, you are not changing your workflow — you are just reading about the subject.

That is the product here: wiring accessibility into the build process so it changes what gets generated.