Web Accessibility Testing MCP

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Web Accessibility Testing MCP (A11y MCP) is an open-source tool designed to connect artificial intelligence language models with web accessibility testing functionalities. It operates as an MCP server, allowing AI assistants to directly interact with professional accessibility testing APIs and tools. This server utilizes Deque's Axe-core API and Puppeteer for thorough accessibility evaluations of web pages and HTML content, guaranteeing adherence to Web Content Accessibility Guidelines (WCAG) versions 2.0, 2.1, and 2.2.

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Comprehensive Evaluation of Web Content Accessibility Guidelines (WCAG)Tests the content against multiple Web Content Accessibility Guidelines (WCAG) versions (2.0, 2.1, 2.2) and generates comprehensive violation reports along with targeted remediation suggestions.
Adaptive Testing ApproachesSupports testing both public URLs and raw HTML snippets, enabling developers to verify accessibility throughout the development process.
High-Resolution Color EvaluationCarries out an in-depth analysis of color contrasts between foreground and background elements, taking into account font sizes and weights to ensure WCAG compliance.
Validation of ARIA (Accessible Rich Internet Applications)Ensures that all ARIA attributes and roles are implemented correctly to guarantee compatibility with screen readers.