mcp-web-validator

MCPattestedlive
v1.3.3AKzar1elMITUpdated todaynpmGitHub

W3C HTML/CSS Validator and Technical SEO Audit MCP Server for AI coding assistants.

Endpoint healthlive
checked 17h ago · 275ms
100% of the last 1 check reached this endpoint
Works in
ClaudeCursorCopilotChatGPTGemini

Inferred from the transports this listing declares (stdio, streamable-http). A client not listed here hasn’t been ruled out — it just isn’t something Forge can confirm.

Attested build
A verified provenance attestation binds this artifact to the listed repository. Nobody has claimed the listing yet — this proves where the code was built, not who stands behind it.
322Downloads/wk
7GitHub stars
todayLast update
Package
AuthorAKzar1el
LicenseMIT
Version1.3.3
Sourcenpm+mcp-registry
npmmcp-web-validator
GitHubAKzar1el/mcp-web-validator
SBOMCycloneDX 1.6 ↓
Trust Status
A
85/100Trusted
✓Listed in Forge index+10/10
✓Identity verified · attested build+20/20
—Ed25519 publish signature+0/5
→ Included automatically when the publisher runs `forge publish`
—Domain verification+0/5
→ Publisher: host /.well-known/forge.json on the package homepage with { "publisher": "<github-login>" }
✓npm Trusted Publishing (Sigstore)+5/5
—npm maintainer match+0/5
→ Publisher: add the verified GitHub login to the npm package's maintainers (npm owner add <login>)
✓CVE scan · clean+30/30
✓Static analysis · clean+20/20
Paste into Claude Code, Cursor, or any AI assistant to fix all gaps
StatusIdentity verified
PublisherUnverified
SignatureUnsigned
Domain—
Provenance✓ Sigstore-verified · 8ff7463
Dependencies✓ 60 resolved+ · none vulnerable
Tool surface8 tools · none privileged
Security scan✓ Cleanv1.3.3 · todayHow well does this scan work?
EvalsNone
IndexedSep 20, 2026

Verification confirms publisher identity (repo ownership), not code safety. The security scan covers known CVEs and suspicious install scripts.

Tools

8 tools · none privileged
Statically extracted from the published packagev1.3.3 · 17h ago

Read out of the source npm actually ships, at scan time. The package was never executed. Tools registered dynamically at runtime, or hidden inside bundled or minified code, can be missed — so this is a floor on the tool surface, not a complete census of it.

html.localReads a bounded local HTML file and sends its markup to the W3C Nu HTML Checker. Use only files the user is authorized to share.

Reads a bounded local HTML file and sends its markup to the W3C Nu HTML Checker. Use only files the user is authorized to share.

No input schema was published for this tool.

html.urlFetches a bounded public HTTP(S) page, then sends its markup to the W3C Nu HTML Checker. Private, reserved, credentialed, and nonstandard-port destinations are rejected.

Fetches a bounded public HTTP(S) page, then sends its markup to the W3C Nu HTML Checker. Private, reserved, credentialed, and nonstandard-port destinations are rejected.

No input schema was published for this tool.

css.localReads a bounded local CSS file and sends it to the W3C Jigsaw CSS Validator. Use only files the user is authorized to share.

Reads a bounded local CSS file and sends it to the W3C Jigsaw CSS Validator. Use only files the user is authorized to share.

No input schema was published for this tool.

seo.metadataAnalyzes supplied HTML locally for metadata, heading structure, viewport configuration, image alternatives, and Open Graph fields.

Analyzes supplied HTML locally for metadata, heading structure, viewport configuration, image alternatives, and Open Graph fields.

No input schema was published for this tool.

links.brokenResolves and checks up to 25 public HTTP(S) links in supplied HTML. Redirects are reported but not followed, and response bodies are discarded.

Resolves and checks up to 25 public HTTP(S) links in supplied HTML. Redirects are reported but not followed, and response bodies are discarded.

No input schema was published for this tool.

schema.markupParses JSON-LD blocks in supplied HTML locally and reports empty blocks or JSON syntax errors. It does not validate vocabulary semantics.

Parses JSON-LD blocks in supplied HTML locally and reports empty blocks or JSON syntax errors. It does not validate vocabulary semantics.

No input schema was published for this tool.

report.validationCombines W3C HTML/CSS validation, local SEO/accessibility checks, JSON-LD syntax checks, and a bounded public-link check into a Markdown and structured report.

Combines W3C HTML/CSS validation, local SEO/accessibility checks, JSON-LD syntax checks, and a bounded public-link check into a Markdown and structured report.

No input schema was published for this tool.

screenshot.captureRenders a local HTML file or HTTP(S) URL in a sandboxed local Chromium browser and writes PNG screenshots to the requested directory. Existing matching files may be replaced.

Renders a local HTML file or HTTP(S) URL in a sandboxed local Chromium browser and writes PNG screenshots to the requested directory. Existing matching files may be replaced.

No input schema was published for this tool.

8 of 8 tools published a description.

Tool names and descriptions are written by the publisher and shown verbatim as inert text. They are the strings an MCP client passes to a model, so Forge scans them for prompt-injection patterns — any finding appears with the security scan above. “Privileged” is a keyword match on the tool name, not an audit of what the tool does: a benign-sounding name can still do anything.

About

W3C HTML/CSS Validator and Technical SEO Audit MCP Server for AI coding assistants.

Keywords
mcpmodel-context-protocolw3cvalidatorhtml-validatorseoseo-auditaccessibility
Alternatives
Comparing tool surfaces…

Tools exposed

8 tools · none privileged · observed by static extraction. A tool surface is what one scan read on one day, not a live capability list.

Linked names open Forge’s index of every entry observed exposing that tool. Browse all indexed tools.

Dependency tree

What one Forge scan resolved from npm metadata on 2026-09-20 — observed resolution, not a publisher declaration.

60 packages resolved · 4 direct · none carrying advisories Resolution stops at depth 4 and 60 packages.

The crawl stopped at the 60-package limit. The rest of the tree was never resolved.

36 more resolved packages are not drawn here (display cap: 24). Every dependency carrying an advisory is drawn regardless of the cap. Full inventory (CycloneDX SBOM)

Declared but not resolved

51 declared dependencies never landed in the tree. They are missing from Forge's resolution, not from the package.

+39 more not listed. The counts by reason above cover all of them.

Not followed: peerDependencies. This tree covers runtime dependencies only, so anything those pull in was never resolved.