This is not related to Brick Builder, but if you need a tool to check for accessibility issues while you work, I recommend Editoria11y. This is a free plugin, but in my preliminary testing, it works very well in the builder and in the core. I have tested others that fail miserably or are so cumbersome you don’t want to use them. This one is a breath of fresh air: lightweight, finding exposed links, lack of meaningful text, missing alt text, opening links in a new window, and more.

I also find the reporting tool to be a very nice roll-up of issues, far better than a very expensive alternative.

Screenshot of the backend reporting tool.

The notification of problems is simple and straightforward while you are working.

Screenshot of the issue notification stating that the image has no alt text.