W3C MCP Server: io.github.pipeworx-io/w3c

The server provides W3C web-standards lookup over the w3c/browser-specs dataset. It is reachable via GitHub and Cloudflare, and is described as part of Pipeworx. Tooling searches for W3C specifications by keyword or topic and returns matching standards details.

🛠️ Key Features

MCP web-standards lookup over w3c/browser-specs
Search by keyword or topic
Scope includes HTML, CSS, WCAG accessibility, DOM, SVG, WAI-ARIA, WebAuthn, Fetch, and 800+ others
Returns W3C specs with shortname, title, and status (per the excerpt)

🚀 Use Cases

Answer “what W3C spec defines X”
Locate the specification for a specific technology (e.g., CSS grid)
Find web accessibility standards
Identify specs covering custom elements

⚡ Developer Benefits

Provides a w3c_search tool for spec discovery
Structured results support downstream agent workflows

⚠️ Limitations

Source excerpt lists tool behavior and topics but does not include full return schema details or explicit limits.

mcp-w3c

W3C MCP — web-standards lookup over w3c/browser-specs (GitHub, CF-reachable).

Part of Pipeworx — an MCP gateway connecting AI agents to 1346+ live data sources.

Tools

Tool Description

w3c_search Find W3C / web-standards specifications by keyword or topic — HTML, CSS, WCAG accessibility, DOM, SVG, WAI-ARIA, WebAuthn, Fetch, and 800+ others. Answers "what W3C spec defines X", "the CSS grid specification", "web accessibility standard", "which spec covers custom elements". Returns specs with shortname, title, status (Recommendation / Working Draft / Living Standard), organization, and official URL. Example: w3c_search({ query: "flexbox" }).

w3c_spec Detail for one web-standards spec by shortname ("WCAG21", "css-grid-1", "html") or title fragment ("web content accessibility"). Returns title, status, organization (W3C/WHATWG), working groups, series, official URL, editor's-draft URL. Example: w3c_spec({ spec: "WCAG21" }). Accepts shortname/name/title too.

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

json

{
  "mcpServers": {
    "w3c": {
      "url": "https://gateway.pipeworx.io/w3c/mcp"
    }
  }
}

Or connect to the full Pipeworx gateway for access to all 1346+ data sources:

json

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

code

ask_pipeworx({ question: "your question about W3c data" })

The gateway picks the right tool and fills the arguments automatically.

License

MIT

W3c

W3C MCP Server: io.github.pipeworx-io/w3c

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

mcp-w3c

Tools

Quick Start

Using with ask_pipeworx

More

License

Install

Remote endpoint