WCAG Accessibility Checker API | ADA & EAA Compliance Audit

Audit websites for WCAG 2.1 accessibility compliance. Get A-F grades, violation details by severity, and actionable remediation steps per URL.

Quickstart

1. Add URLs to audit
2. Select WCAG level (A, AA, or AAA)
3. Run the actor
4. Get grades + violations + fix recommendations in the dataset

Who Gets Value Fastest

Role	Use Case
Compliance teams	Weekly ADA/EAA compliance monitoring with change alerts
Web agencies	Bulk audit client portfolios, report accessibility grades
Government contractors	Section 508 compliance verification
Enterprise IT	Pre-deployment accessibility gates
QA teams	Automated accessibility regression testing

What Does This Actor Do?

For each URL, the actor:

1. Opens the page in a real browser (Playwright + Chromium)
2. Runs the industry-standard axe-core accessibility engine
3. Evaluates against your chosen WCAG level (A, AA, or AAA)
4. Scores the page 0-100 with an A-F grade
5. Lists every violation with severity, affected elements, and WCAG criteria
6. Generates prioritized remediation actions
7. Detects score/grade changes from previous runs (recurring monitoring)

WCAG Levels

Level	Description	Common Requirement
A	Minimum accessibility	Basic compliance
AA	Standard accessibility	ADA (US), EAA (EU), most legal requirements
AAA	Maximum accessibility	Strictest, often aspirational

Scoring Method

• Starts at 100 points
• Each violation node deducts points by severity:
  • Critical: -8 per affected element
  • Serious: -5 per affected element
  • Moderate: -3 per affected element
  • Minor: -1 per affected element
• A = 85-100, B = 70-84, C = 50-69, D = 30-49, F = 0-29

Output Per URL

{
    "url": "https://example.com",
    "score": { "total": 78, "grade": "B", "level": "AA" },
    "summary": {
        "violations": 4,
        "critical": 1,
        "serious": 2,
        "moderate": 1,
        "minor": 0,
        "passes": 45,
        "incomplete": 3
    },
    "violations": [
        {
            "id": "image-alt",
            "impact": "critical",
            "description": "Images must have alternate text",
            "helpUrl": "https://dequeuniversity.com/rules/axe/4.x/image-alt",
            "nodeCount": 3,
            "wcagCriteria": ["1.1.1"]
        }
    ],
    "recommendedActions": [
        "[CRITICAL] Images must have alternate text (3 elements)",
        "[SERIOUS] Elements must meet minimum color contrast ratio requirements (2 elements)"
    ]
}

Recurring Monitoring

Set up a scheduled task for weekly or monthly compliance checks. The actor tracks grade and score changes between runs, so you get alerts when accessibility regresses.

Related Audit Suite

• Security Headers Checker - OWASP security header audit
• Site Governance Monitor - robots.txt, sitemap, schema.org
• Schema.org Validator - structured data validation
• SSL Certificate Monitor - certificate expiry and security

Input Reference

Field	Type	Default	Description
urls	array	(required)	URLs to audit, max 50
wcagLevel	string	"AA"	WCAG level: A, AA, or AAA
includeWarnings	boolean	true	Include best-practice warnings
concurrency	integer	2	Parallel browser tabs (1-5)
delivery	string	"dataset"	Output: dataset or webhook
webhookUrl	string		Webhook endpoint URL
waitForSelector	string		CSS selector to wait for (SPAs)
timeout	integer	30000	Page load timeout (ms)
dryRun	boolean	false	Test mode, no output saved

Powered By

• axe-core by Deque Systems - the industry standard for automated accessibility testing
• Playwright - reliable browser automation