Official MCP RegistryHosted serverwhatwg-spec-mcp.jasnell.workers.dev
Web Standards Specs
Search and read web standards from WHATWG, IETF, W3C, MDN, Can I Use, WPT, Node.js, and TypeScript via remote Cloudflare Workers.
Connect to Claude Code
Copyclaude mcp add --transport http web-standards-specs https://whatwg-spec-mcp.jasnell.workers.dev/mcpVendor-hosted remote server: nothing to install locally. If it uses OAuth, Claude opens the vendor login on first use.
Endpoints
- https://whatwg-spec-mcp.jasnell.workers.dev/mcpstreamable-http
Published in the official MCP registry as “Web Standards Specs”. Verified through the vendor namespace.