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WCAG Accessibility Auditor

by Kowshik Kuri (Ratul)Updated May 12, 2026

Audits any URL for WCAG 2.2 accessibility compliance using axe-core ruleset. Generates reports with violation details and legal-risk scores for ADA and EU Accessibility Act requirements. Web developers, QA engineers, and compliance officers use it to scan sites, identify issues like missing alt text or keyboard navigation failures, and track fixes in development pipelines.

wcag
accessibility
axe-core
+1
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Overview

The WCAG Accessibility Auditor MCP server performs automated audits on any provided URL to check compliance against WCAG 2.2 standards using the axe-core engine. It outputs detailed violation reports categorized by severity, along with risk scores aligned to ADA and EU Accessibility Act regulations, helping teams quantify legal exposure.

Key Capabilities

  • URL Auditing: Submits a URL to axe-core for a full scan, returning JSON results with violations, passes, and incomplete checks. Includes impact levels (critical, serious, moderate, minor) and repair tags for remediation.
  • Legal-Risk Scoring: Computes scores based on violation counts and types, mapping to ADA Title III and EU Accessibility Act thresholds. Flags high-risk issues like color contrast failures or ARIA misuse.
  • Report Generation: Produces structured output for integration into CI/CD workflows or custom dashboards, with pagination for large sites.

Use Cases

  1. Pre-Deployment Checks: Developers submit staging URLs via audit_url to catch WCAG violations early, preventing production releases with accessibility gaps.
  2. CI/CD Integration: QA teams pipe build artifacts to the auditor in pipelines, failing builds on critical violations and logging scores for compliance audits.
  3. Enterprise Compliance Scans: Legal teams schedule regular audits on public sites, using risk scores to prioritize remediation under ADA lawsuits or EU directives.
  4. Agency Workflow: Web agencies audit client sites post-update, generating reports with axe-core details to demonstrate WCAG adherence in contracts.

Who This Is For

Web developers building accessible sites, QA engineers automating tests, digital agencies ensuring client compliance, and compliance officers monitoring legal risks. Requires basic API integration knowledge for URL submission and result parsing.