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W3C MCP Server

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Query the W3C (World Wide Web Consortium) public API to explore working groups, community groups, specifications, and standards. Search groups by keyword, list chairs, participants and organizations, review group charters, track spec progression through version history, filter specifications by status, and map ecosystems of related standards efforts.

15 tools
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AI Skill
SKILL.md

Domain knowledge for W3C — workflow patterns, data models, and gotchas for your AI agent.

W3C

Query the W3C public API for working groups, community groups, specifications, and standards. Search groups, list chairs/participants, track spec progression.

Data Model

  • Groups — community (cg) vs working (wg) programs; browse, keyword-search, or open a single shortname.
  • Specifications — deliverables tied to groups, searchable corpora, individual spec records, and ordered version timelines.
  • Governance surfaces — chairs, participants, charters, and affiliated organizations for each group.
  • Ecosystem views — curated maps plus topic-level landscapes across active standards work.

Gotchas

  • No auth: Public API. group_type (cg/wg) and shortname for group-scoped calls.

Tools in this Server (15)

W3C Get Group

Get detailed information about a specific W3C group by its type and shortname. Returns full description, creation date, homepage, join URL, and numeri...

W3C Get Specification

Get detailed information about a specific W3C specification by its shortname. Returns title, full description, editor draft URL, shortlink (TR URL), a...

W3C Get Spec Version

Get details about a specific published version of a W3C specification, including its editors and delivering groups. Returns version status, date, URI,...

W3C List Ecosystems

List W3C ecosystems — high-level groupings of related standards efforts. Call without arguments to see all 9 ecosystems. Pass an ecosystem shortname t...

W3C List Group Chairs

List the chairs (leaders) of a W3C group. Returns chair names. Use this to identify who leads a group before engaging or contributing.

W3C List Group Charters

List all charters for a W3C Working Group or Interest Group. A charter defines the group's scope, deliverables, and timeline. Returns start/end dates,...

W3C List Group Orgs

List organizations and individuals participating in a W3C group. Shows which companies (Google, Microsoft, Apple, etc.) and independent contributors a...

W3C List Group Participants

List participants (members) of a W3C group. Returns names and total count. Useful for gauging group size and activity level, and finding who's involve...

W3C List Groups

List W3C groups (Working Groups, Community Groups, Interest Groups, etc.). Filter by group type to narrow results. Returns group name, shortname, type...

W3C List Group Specifications

List all specifications produced by a W3C group. Requires the numeric group ID (returned by w3c_get_group). Returns specification titles and shortname...

W3C List Specs By Status

List W3C specifications filtered by their current status. Shows all specs at a given maturity level. Common statuses: 'Working Draft' (~330 specs), 'C...

W3C List Spec Versions

List all published versions of a W3C specification (newest first). Returns version date, status (Working Draft, Candidate Recommendation, etc.), URI, ...

W3C Search Groups

Search W3C groups by keyword. Filters by name, shortname, and description. Returns matching groups sorted by relevance (name matches first). Use creat...

W3C Search Specifications

Search for W3C specifications. Two modes: (1) by shortname prefix (fast, direct API) — e.g. shortname='webnn' finds the Web Neural Network API; (2) by...

W3C Topic Landscape

Get a complete landscape view of a topic at W3C in a single call. Returns all matching groups enriched with participant counts, chairs, spec counts an...

Frequently Asked Questions

What is the W3C MCP server?

Query the W3C (World Wide Web Consortium) public API to explore working groups, community groups, specifications, and standards. Search groups by keyword, list chairs, participants and organizations, review group charters, track spec progression through version history, filter specifications by status, and map ecosystems of related standards efforts. It provides 15 tools that AI agents can use through the Model Context Protocol (MCP).

How do I connect W3C to my AI agent?

Add the MCPBundles server URL to your MCP client configuration (Claude Desktop, Cursor, VS Code, etc.). The URL format is: https://mcp.mcpbundles.com/bundle/w3c. Authentication is handled automatically.

How many tools does W3C provide?

W3C provides 15 tools that can be called by AI agents, along with a SKILL.md that gives your AI agent domain knowledge about when and how to use them.

What authentication does W3C require?

W3C uses open data APIs — no authentication required.

Setup Instructions

Connect W3C to any MCP client in minutes

https://mcp.mcpbundles.com/bundle/w3c

What is MCP?

Model Context Protocol lets AI tools call external capabilities securely through a single URL. This bundle groups tools behind an MCP endpoint that many clients can use.

Use this bundle in 3 steps

  1. Copy the MCP URL above
  2. Open your AI tool and add a new MCP/connector
  3. Paste the URL and follow any auth prompts

Claude Desktop Users

Skip the manual setup! Use the .mcpb file format for one-click installation. Check the Claude Desktop tab for setup instructions.

Pick your tool tab for exact steps

Select ChatGPT, Cursor, Claude Code, or another tab for copy-paste config.

Ready to chat with W3C?

Same flow: Studio opens on this server after sign-in. Keep chatting to call tools from the conversation.

W3C MCP Server & Skill — 15 Tools