W3C MCP Server

Example Use Cases

• 1

  Access and explore official web specifications from W3C, WHATWG, and IETF.

• 2

  Retrieve WebIDL interface definitions for JavaScript APIs.

• 3

  Look up CSS properties, HTML elements, and PWA-related specifications.

Description

This MCP server enables AI assistants to query and retrieve detailed information from official web standards including specifications, WebIDL interfaces, CSS properties, and HTML elements. It supports filtering, searching, and dependency lookups across multiple organizations' specs, facilitating integration of authoritative web platform data. The server is optimized for performance with caching and indexing, and supports debug logging for development.