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Accessibility Audit API

Run an ADA and WCAG 2.1 AA accessibility audit on any URL via API. Get an accessibility score, a lawsuit-risk assessment, and prioritized fixes — powered by axe-core, the industry-standard accessibility engine.

ADA website lawsuits keep climbing, and WCAG 2.1 AA is the standard U.S. courts reference. The Accessibility Audit API turns that standard into an endpoint: send a URL and get back a scored, categorized accessibility report your code can act on — in a compliance dashboard, a CI gate, or a batch job across every page you manage.

One call

curl -H "X-API-Key: YOUR_KEY" \
  "https://seoscoreapi.com/audit/accessibility?url=https://example.com"

Or from Python with requests:

import requests

r = requests.get(
    "https://seoscoreapi.com/audit/accessibility",
    params={"url": "https://example.com"},
    headers={"X-API-Key": "YOUR_KEY"},
)
data = r.json()
print(data["score"], data["grade"], data["lawsuit_risk"]["level"])

What a single accessibility audit returns

• A 0–100 accessibility score and letter grade so you can threshold pass/fail in code.
• A lawsuit-risk level (minimal, low, medium, or high) based on which WCAG failures plaintiffs most often cite.
• Category breakdowns — images and alt text, form labels, color contrast, keyboard navigation, ARIA, document structure, links and buttons, tables, media captions, and zoom.
• Per-violation fixes — every issue with the failing elements, the exact WCAG criterion (e.g. 1.4.3 for contrast), and a concrete fix suggestion.

Powered by axe-core, tested against WCAG 2.1 AA

The audit injects axe-core — the same accessibility engine used by Google, Microsoft, and the US Department of Homeland Security — into a headless Chromium browser, so your live, JavaScript-rendered page is tested the way real assistive technology sees it. It runs the full WCAG 2.1 Level AA ruleset, and results are stable enough to assert on in CI or re-run on a schedule to catch regressions before they become complaints.

Related reading

Frequently asked

What does the accessibility audit API check?

It runs the full WCAG 2.1 AA ruleset via axe-core: images and alt text, form labels, color contrast, keyboard navigation, ARIA attributes, document structure, links and buttons, tables, audio/video captions, and viewport zoom — each categorized by severity from critical to minor.

Does it test for ADA compliance?

WCAG 2.1 Level AA is the standard U.S. courts reference for ADA Title III website cases, so the audit maps directly to it and flags a lawsuit-risk level. It is a technical compliance check, not legal advice — but it's the same automated testing basis accessibility specialists rely on.

Which WCAG version does it test?

WCAG 2.1 Level AA — every Level A and AA success criterion across the four principles: perceivable, operable, understandable, and robust.

Is the accessibility audit on the free tier?

The accessibility endpoint is included on all paid plans (from $5/mo); the free tier covers standard SEO audits. Sign up for a free key, then upgrade to run accessibility audits.

How is the accessibility score calculated?

Each axe-core violation is weighted by its impact — critical, serious, moderate, or minor — and combined into a 0–100 score with an A+ to F grade, so you get an at-a-glance measure alongside the full violation detail.