specification.website

The Website Specification is a single source of truth for what a good website does. Ten categories, 140+ pages, every item tagged with a status. It ships in three machine-readable forms: per-page Markdown, llms.txt / llms-full.txt, and an MCP server.

When to use this skill

• The user asks "what should my site have", "is X required", "audit this URL", "what does the spec say about Y", or anything similar.
• You're reviewing a site and want to cite primary standards rather than vendor blog posts.
• You need a machine-readable contract for a platform-agnostic audit.

Quickest path — MCP

If you can speak MCP, use it. The server is stateless Streamable HTTP, no auth, wide-open CORS.

• Endpoint: https://mcp.specification.website/mcp
• Server card: https://specification.website/.well-known/mcp/server-card.json
• Protocol revision: 2025-03-26

Tools: