BAAT

Spec sheet

Purpose

BAAT runs automated accessibility tests on websites directly in the browser.Read 12 Oct 2026 · tools.caat.report

Intended users

The maker describes BAAT as suitable for organizations dedicated to developing accessible websites.Read 12 Oct 2026 · tools.caat.report

Audience

The maker says BAAT is suitable for organizations dedicated to developing accessible websites.Read 12 Oct 2026 · tools.caat.report

Free plan

YesRead 25 Sep 2026 · github.com

Support

The maker directs users with questions or feedback to open an issue on GitHub.Read 12 Oct 2026 · github.com

License

The BAAT GitHub repository identifies its license as MIT.Read 12 Oct 2026 · github.com

Headquarters

The maker's legal notice lists mindscreen GmbH at Nymphenburger Straße 147, 80634 München.Read 12 Oct 2026 · caat.report

Maker

The BAAT page says it is developed by mindscreen.Read 12 Oct 2026 · tools.caat.report

Automated scans

YesRead 25 Sep 2026 · github.com

Browser extension

NoRead 25 Sep 2026 · github.com

Browser limitation

Content Security Policy rules can prevent BAAT from loading axe-core, in which case the maker instructs users to select a local axe.min.js file.Read 12 Oct 2026 · tools.caat.report

CI/CD integration

NoRead 25 Sep 2026 · github.com

CSP limitation

A website’s Content Security Policy may block the axe-core file and prevent BAAT from running; the maker says users can provide a local axe.min.js file in BAAT settings.Read 12 Oct 2026 · tools.caat.report

Developer mode

Developer mode displays axe-core results in more detail and prints additional debug information to the console.Read 12 Oct 2026 · github.com

Installation

BAAT can be used as a browser bookmarklet without installing additional software or plug-ins.Read 12 Oct 2026 · tools.caat.report

Issue filtering

The userscript documentation says the default issue filter shows only serious or critical issues.Read 12 Oct 2026 · github.com

Manual review tools

NoRead 25 Sep 2026 · github.com

Mobile testing

NoRead 25 Sep 2026 · github.com

Pricing

The BAAT page describes the bookmarklet and userscript but does not state a price or subscription plan.Read 12 Oct 2026 · tools.caat.report

Privacy and hosting

The maker's CAAT privacy policy says it complies with GDPR and runs the CAAT service on servers located in Germany.Read 12 Oct 2026 · caat.report

Results

BAAT describes errors with short descriptions and tags them by severity.Read 12 Oct 2026 · tools.caat.report

Rules

BAAT uses axe-core and supports custom rulesets based on axe-core.Read 12 Oct 2026 · tools.caat.report

Rules engine

BAAT uses axe-core and supports custom rulesets based on axe-core.Read 12 Oct 2026 · tools.caat.report

Security and privacy

The BAAT page says that a local axe.min.js file may be needed when CSP rules prevent automatically loading the file; it does not describe BAAT-specific security certifications.Read 12 Oct 2026 · tools.caat.report

Userscript option

BAAT can also be installed as a userscript using a userscript manager such as Tampermonkey.Read 12 Oct 2026 · github.com

Where Specifiction places it

• Accessibility Testing Software#157 of 1697.1