The W3C Markup Validation Service

https://validator.w3.org ↗
Agent Score28/ 100
↓7
healthy· ~141ms avg· just now

Capabilities

Has FAQHas forms

Tools (11)

•list-pages
•get-page
•search-site
•search-faq
•submit-check
•submit-check-2
•submit-check-3
•submit-check-cgi
•submit-check-cgi-2
•submit-checklink
•submit-search

Coverage

11pages crawled

Chat with this site

Connect

Agent Endpoint

https://w2agent.dev/api/agent/validator-w3-org

Claude Desktop Config

{
  "mcpServers": {
    "validator-w3-org": {
      "url": "https://w2agent.dev/api/agent/validator-w3-org"
    }
  }
}

Agent Card

https://validator-w3-org.agent.w2agent.dev/.well-known/agent-card.json

server.json

https://validator-w3-org.agent.w2agent.dev/server.json

Hosted Files

llms.txt

https://w2agent.dev/api/sites/validator-w3-org/llms.txt

llms-full.txt

https://w2agent.dev/api/sites/validator-w3-org/llms-full.txt

skill.md

https://w2agent.dev/api/sites/validator-w3-org/skill.md

AI Readiness Score

D31/100

Last audited 5/6/2026

Audit Summary

Bot Accessibility
71Strong
Structured Data
7Weak
Content Quality
61Partial
Agent Discovery
0Weak
Agent Protocols
11Weak
Technical Foundations
67Partial

Badge

w2agent badge

Markdown

[![w2agent score](https://w2agent.dev/api/sites/validator-w3-org/badge.svg)](https://w2agent.dev/sites/validator-w3-org)

HTML

<a href="https://w2agent.dev/sites/validator-w3-org"><img src="https://w2agent.dev/api/sites/validator-w3-org/badge.svg" alt="w2agent score" /></a>

IMG

https://w2agent.dev/api/sites/validator-w3-org/badge.svg