Nuxt SEO

by nuxtseo.com · remote · no sign-in to list tools · v2.0.1 · published by com.nuxtseo

Free SEO checks for any URL, plus the Nuxt SEO module docs.

Changes · 3

Compare Registry entry

12 tools: 3 change things and 9 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone0Claude Code: ask
Changes things3Claude Code: ask: see these tools
Only reads9Claude Code: allow: see these tools

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http nuxt-seo https://nuxtseo.com/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warnconvert_html_to_markdown
The server marks "convert_html_to_markdown" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":true}; The name "convert_html_to_markdown" says "convert": a word for a change.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

12 tools

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

convert_html_to_markdownConvert a web page (by URL) or a raw HTML string to Markdown, optionally keeping only the main content without navigation and footer.Reads text others writeCan send data out1 finding
Why it is in this group
- The name "convert_html_to_markdown" says "convert": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Findings
- Warn
  The server marks "convert_html_to_markdown" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":true}; The name "convert_html_to_markdown" says "convert": a word for a change.
  What this check looks for
Description, as the server wrote it
Convert a web page (by URL) or a raw HTML string to Markdown, optionally keeping only the main content without navigation and footer.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
- title: Convert HTML to Markdown
debug_social_shareCheck how a URL renders as a share card on social platforms and in chat apps: Open Graph and Twitter Card tags, the resolved image, and a warning for each missing or invalid tag.Reads text others writeCan send data outNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Description, as the server wrote it
Check how a URL renders as a share card on social platforms and in chat apps: Open Graph and Twitter Card tags, the resolved image, and a warning for each missing or invalid tag.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
- title: Debug Social Share Cards
diagnose_urlAudit one public URL for search and AI answers in a single call: returns a 0 to 100 score, a grade, and findings ranked by severity, each with the fix, covering indexability, meta …Reads text others writeCan send data outNo findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Description, as the server wrote it
Audit one public URL for search and AI answers in a single call: returns a 0 to 100 score, a grade, and findings ranked by severity, each with the fix, covering indexability, meta tags, Schema.org, social cards, sitemap and robots.txt.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
- title: Diagnose URL

Only reads 9Looks things up and changes nothing.Claude Code: allow, ask for 3 outbound

analyze_robots_txtFetch and parse the robots.txt of a site: rules per user agent, sitemap directives, syntax errors, and whether the file exists at all.Reads private dataReads text others writeCan send data outNo findings
Why it is in this group
- The name "analyze_robots_txt" says "analyze": a word for reading.
What it can reach
- private-dataThe description's first sentence says "fetch" and "file": it reads files.
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe input takes a URL (input.url), and the tool reads it: it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Claude Code: ask, because it is tagged outbound.
Description, as the server wrote it
Fetch and parse the robots.txt of a site: rules per user agent, sitemap directives, syntax errors, and whether the file exists at all.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
- title: Analyze robots.txt
check_meta_tagsRead the head metadata of a URL: title, language, every meta tag (description, robots, Open Graph, Twitter), canonical and hreflang links, and the JSON-LD block count.Reads text others writeCan send data outNo findings
Why it is in this group
- The description's first verb is "read": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- untrusted-inputThe description's first sentence says "read" and "url": it reads web pages, which anyone can write.
- untrusted-inputThe input takes a URL (input.url), and the tool reads it: it reads web pages, which anyone can write.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Claude Code: ask, because it is tagged outbound.
Description, as the server wrote it
Read the head metadata of a URL: title, language, every meta tag (description, robots, Open Graph, Twitter), canonical and hreflang links, and the JSON-LD block count.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
- title: Check Meta Tags
get_module_setupGet the install command, installation guide and docs navigation for one Nuxt SEO module.Reads private dataNo findings
Why it is in this group
- The name "get_module_setup" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "get" and "doc": it reads documents.
Description, as the server wrote it
Get the install command, installation guide and docs navigation for one Nuxt SEO module.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- title: Get Module Setup
get_page_markdownReads a page of this site as markdown.No findings
Why it is in this group
- The name "get_page_markdown" says "get": a word for reading.
Description, as the server wrote it
Reads a page of this site as markdown.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- title: Read page
list_modulesList the Nuxt SEO modules with their npm package, docs link, latest version, GitHub stars and downloads in the last 30 days.Reads private dataNo findings
Why it is in this group
- The name "list_modules" says "list": a word for reading.
What it can reach
- private-dataThe description's first sentence says "list" and "doc": it reads documents.
Description, as the server wrote it
List the Nuxt SEO modules with their npm package, docs link, latest version, GitHub stars and downloads in the last 30 days.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- title: List Nuxt SEO Modules
list_pagesLists pages on this site with their route, title and description.No findings
Why it is in this group
- The name "list_pages" says "list": a word for reading.
Description, as the server wrote it
Lists pages on this site with their route, title and description.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- title: List pages
search_pagesSearches the full content of this site and returns the best matching pages with their route, title and description.No findings
Why it is in this group
- The name "search_pages" says "search": a word for reading.
Description, as the server wrote it
Searches the full content of this site and returns the best matching pages with their route, title and description.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- title: Search pages
validate_schemaFind and validate the Schema.org structured data (JSON-LD and Microdata) on a URL: each detected type with its errors and warnings for rich results.Reads text others writeCan send data outNo findings
Why it is in this group
- The name "validate_schema" says "validate": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Claude Code: ask, because it is tagged outbound.
Description, as the server wrote it
Find and validate the Schema.org structured data (JSON-LD and Microdata) on a URL: each detected type with its errors and warnings for rich results.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: true
- title: Validate Schema.org
validate_sitemapValidate the XML of a sitemap or sitemap index you pass in: URL count, duplicates, invalid URLs and dates, and protocol errors.No findings
Why it is in this group
- The name "validate_sitemap" says "validate": a word for reading.
Description, as the server wrote it
Validate the XML of a sitemap or sitemap index you pass in: URL count, duplicates, invalid URLs and dates, and protocol errors.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
- title: Validate XML Sitemap

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

108 paths in this server alone from private data, through text someone else wrote, to a way out. Denying 3 private-data tools breaks every one.

Reads private data3: Reads files, mail, messages, databases, secrets, calendars or repositories.; analyze_robots_txt
get_module_setup
list_modules
Reads text others write6: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; analyze_robots_txt
check_meta_tags
convert_html_to_markdown
debug_social_share
diagnose_url
validate_schema
Can send data out6: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; analyze_robots_txt
check_meta_tags
convert_html_to_markdown
debug_social_share
diagnose_url
validate_schema

deny to break every path

{
  "permissions": {
    "deny": [
      "mcp__nuxt-seo__analyze_robots_txt",
      "mcp__nuxt-seo__get_module_setup",
      "mcp__nuxt-seo__list_modules"
    ]
  }
}

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Looked at Oct 22, 2026, 14:37 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable: yes
HTTP status of an anonymous initialize: 200
tools/list served without credentials: yes
Tools that change things, listed without credentials: 3
Protocol version: 2025-06-18
WWW-Authenticate on 401: not observed
resource_metadata in WWW-Authenticate: none
RFC 9728 protected resource metadata: none
Authorization servers: none
Legacy HTTP+SSE transport: no
Dynamic client registration: not observed
Client ID metadata documents: not observed

WarnThe whole server
The endpoint served tools/list without credentials, and the list has 3 tools that change things (3 write). Whether a call also works without credentials was not tested: tools are never called.
Matched text
https://nuxtseo.com/mcp: tools/list returned 12 tools to an anonymous client, including convert_html_to_markdown (write), debug_social_share (write), diagnose_url (write)
What this check looks for

Install

Pinned to version 2.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http nuxt-seo https://nuxtseo.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__nuxt-seo__get_page_markdown",
      "mcp__nuxt-seo__list_pages",
      "mcp__nuxt-seo__get_module_setup",
      "mcp__nuxt-seo__list_modules",
      "mcp__nuxt-seo__search_pages",
      "mcp__nuxt-seo__validate_sitemap"
    ],
    "ask": [
      "mcp__nuxt-seo__analyze_robots_txt",
      "mcp__nuxt-seo__check_meta_tags",
      "mcp__nuxt-seo__convert_html_to_markdown",
      "mcp__nuxt-seo__debug_social_share",
      "mcp__nuxt-seo__diagnose_url",
      "mcp__nuxt-seo__validate_schema"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as nuxt-seo. Review it before you use it.

Capability tags behind 8 rules

mcp__nuxt-seo__analyze_robots_txt private-data, untrusted-input, outbound
mcp__nuxt-seo__check_meta_tags untrusted-input, outbound
mcp__nuxt-seo__convert_html_to_markdown untrusted-input, outbound
mcp__nuxt-seo__debug_social_share untrusted-input, outbound
mcp__nuxt-seo__diagnose_url untrusted-input, outbound
mcp__nuxt-seo__get_module_setup private-data
mcp__nuxt-seo__list_modules private-data
mcp__nuxt-seo__validate_schema untrusted-input, outbound

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.nuxtseo/nuxt-seo/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

3 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

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Source: MCP Registry. Synced Oct 21, 2026, 17:59 UTC.

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