README.md
MCP Server for accessing W3C/WHATWG/IETF web specifications.
Provides AI assistants with access to official web standards data including specifications, WebIDL definitions, CSS properties, and HTML elements.
Configuration
claude_desktop_config.json
{"mcpServers":{"w3c-mcp":{"command":"npx","args":["-y","@shuji-bonji/w3c-mcp"]}}}Try it
→Look up the official W3C specification for the CSS Grid Layout.
→Find the WebIDL definition for the Fetch API.
→What are the official HTML element requirements for the dialog tag according to WHATWG?
→Check the IETF standards for HTTP/3 headers.
→Get the latest documentation on CSS container queries from the web standards data.