Potencialize seu agente
O comando do próprio publicador. Não é um endpoint do PlugMCP.
Host a copy with our keys and logs.
npx -y [email protected]O Claude Code não tem link de instalação para um comando local. Copie o comando abaixo e execute-o em um terminal.
claude mcp add mcp-web-validator -- npx -y mcp-web-validator@1.3.48Execute em um terminal.
{ "mcpServers": { "mcp-web-validator": { "command": "npx", "args": [ "-y", "[email protected]" ] } }}claude_desktop_config.json
URL remota ou um comando na sua máquina? Como as duas instalações diferem
Rodar no PlugMCP
A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.
AbrirAn MCP server for HTML and CSS validation, technical SEO and accessibility checks, JSON-LD syntax validation, broken-link checks, and responsive screenshots. It is part of the DigestSEO suite of open-source SEO tools.
This repository contains two deliberately separate MCP surfaces:
Local installation:
npx -y mcp-web-validator
Hosted endpoint:
https://web-validator-mcp.digestseo.com/mcp
The validation, SEO, schema, link, and report tools do not download a browser during installation. The local screenshot.capture tool installs its pinned headless browser into Puppeteer's cache on first use, then reuses that browser for later screenshots. Set PUPPETEER_CACHE_DIR if you need a custom cache location.
The npm package exposes these exact runtime tool names:
The hosted app exposes eight tools:
audit_public_webpage follows at most three validated redirects, accepts a bounded text/html response, and records the final URL. It does not crawl additional pages, execute JavaScript, authenticate, or fetch linked stylesheets and assets. audit_public_site first locks the final public origin, then reads bounded robots.txt plus same-origin XML Sitemap, RSS 2.0, Atom 1.0, and plain-text sitemap representations before auditing at most eight eligible sitemap pages in one call. Robots discovery may follow up to five validated public redirects across authorities, as defined by the robots protocol; the resulting rules and relative Sitemap directives are still interpreted for the originally audited authority. Sitemap entries and audited pages remain same-origin, and private/reserved destinations, credentials, custom ports, service self-fetches, and HTTPS-to-HTTP redirect downgrades are rejected. The tool never follows HTML links or external sitemap entries; use page_offset when the response says more eligible pages remain. The fetched HTML is sent to https://html5.validator.nu/, the same external Nu HTML Checker used by validate_html and the report tool. CSS parsing, SEO analysis, and JSON-LD parsing run inside the DigestSEO Worker. Optional link checks make capped HEAD requests, with a bounded GET fallback where necessary, to eligible public HTTP(S) URLs; link redirects are reported but not followed. The site tool intentionally does not perform site-wide link checking. The hosted app does not retain tool inputs, fetched HTML, or results.
Only validate files, markup, and public webpages that you own or are authorized to inspect. Public page URLs can contain sensitive query values, so remove tokens and private identifiers before submitting them. Do not submit passwords, API keys, access tokens, payment data, health data, private source code, or other sensitive personal data.
The local server runs with the same operating-system permissions as its MCP client. Review tool inputs before approving file access, outbound validation, link checking, or screenshot creation. The hosted app has no access to your local filesystem.
See the published privacy policy for data-handling details and SECURITY.md for private vulnerability reporting.
Add the server to claude_desktop_config.json:
%APPDATA%\Claude\claude_desktop_config.json~/Library/Application Support/Claude/claude_desktop_config.json{
"mcpServers": {
"mcp-web-validator": {
"command": "npx",
"args": ["-y", "mcp-web-validator"]
}
}
}
Restart Claude Desktop after saving the configuration.
Create a command/stdio MCP server with:
npx -y mcp-web-validator
This repository also includes a Cursor Marketplace plugin manifest. After the plugin is published, install Web Validator by DigestSEO from Cursor's Marketplace or add the repository from Cursor's plugin UI. The plugin bundles the same local stdio server and does not require API keys or environment variables.
Codex CLI can add the published local stdio package directly:
codex mcp add mcp-web-validator -- npx -y mcp-web-validator
Or add the existing hosted Streamable HTTP surface instead:
codex mcp add mcp-web-validator-hosted --url https://web-validator-mcp.digestseo.com/mcp
Verify either configuration with:
codex mcp list
The local package includes workspace-file validation and responsive screenshot capture. The hosted surface is remote-only and cannot access local files or create screenshots.
Gemini CLI supports local stdio MCP servers. Add the published package with:
gemini mcp add mcp-web-validator npx -y mcp-web-validator
This writes the server definition to Gemini CLI's MCP configuration. No API keys or environment variables are required by Web Validator.
Add the published local stdio server with:
copilot mcp add mcp-web-validator -- npx -y mcp-web-validator
When Copilot CLI is started inside a clone of this repository, it can also
discover the checked-in root .mcp.json, which already points
mcp-web-validator at npx -y mcp-web-validator.
This installs the local stdio package, preserving its workspace-file and screenshot capabilities. Node.js 22.12.0+ is required.
Clone the repository and install the locked dependencies:
git clone https://github.com/AKzar1el/mcp-web-validator.git
cd mcp-web-validator
npm ci
Run the local quality gates:
npm run check
npm test
npm run build
npm pack --dry-run
Run the local stdio server:
npm start
Validate the hosted Worker separately:
cd chatgpt-plugin
npm ci
npm run check
npm test
npm run deploy:dry-run
See CONTRIBUTING.md for contribution expectations. Deployment and marketplace-review notes live in chatgpt-plugin/SUBMISSION.md. For agent-assisted installation, see llms-install.md.
Licensed under the MIT License.
W3C HTML/CSS Validator and Technical SEO Audit MCP Server for AI coding assistants.
{ "mcpServers": { "mcp-web-validator": { "command": "npx", "args": [ "-y", "[email protected]" ] } }}Ferramentas
Ainda não há lista de ferramentas. Servidores remotos recebem uma após a primeira verificação de saúde.
Perguntas frequentes
Copie nesta página a configuração stdio para Cursor, Claude Desktop, Claude Code ou VS Code. Ela usa a instalação do publicador, não um proxy do PlugMCP.
Este registro não lista nenhuma variável de ambiente obrigatória.
MCP Web Validator roda localmente via stdio.
Última verificação: 2026-11-15. W3C HTML/CSS Validator and Technical SEO Audit MCP Server for AI coding assistants.