SEO Markup Toolkit

Live

JSON-LD, social tags, robots files and URL helpers in one MCP server.

Build schema.org JSON-LD (FAQ, LocalBusiness, Organization, HowTo, Product, Article, WebSite, Event, Review, Video, BreadcrumbList), Open Graph and Twitter cards, canonical / robots / hreflang tags, robots.txt, llms.txt, humans.txt, security.txt, ads.txt and a web manifest, plus SERP snippet length, keyword density and URL slug, normalize, encode and punycode helpers. Paste the output — this does not fetch your live pages (Site Audit does that).

Start free Tool reference

Server URL

streamable http

https://toolcargo.com/mcp/seo-markup

Claude Code

terminal

claude mcp add --transport http --scope user toolcargo-seo-markup https://toolcargo.com/mcp/seo-markup \
  --header "Authorization: Bearer YOUR_API_KEY"

Create a key in your dashboard. Other clients: setup guides.

What it helps you do

One connector for JSON-LD, social meta, robots files and URL cleanup.
FAQ, LocalBusiness, Product, Article and more as paste-ready JSON-LD.
Older single-tool endpoints stay live for existing keys.

Built for: SEO and content teams who paste markup rather than click through a dozen one-off tools.

Example requests

Local landing page

“Build LocalBusiness JSON-LD and Open Graph tags for this Riyadh clinic, then a canonical tag, with ToolCargo.”

JSON-LD, og:* meta and a rel=canonical link to paste.

FAQ block

“Turn these six Q&As into FAQPage JSON-LD.”

A FAQPage script body.

Redirect CSV

“Turn this old→new URL list into a Netlify redirect map.”

Netlify/nginx/Vercel redirect lines.

Step-by-step workflows: pre-launch check · fixing link previews

Tools

Tool	What it does	Access
`build_faq_jsonld` Build FAQ JSON-LD	Turn question/answer pairs into FAQPage JSON-LD. Not Google's Rich Results Test.	Read-only
`build_localbusiness_jsonld` Build LocalBusiness JSON-LD	Organization or LocalBusiness schema from name, URL, phone and address.	Read-only
`build_organization_jsonld` Build Organization JSON-LD	schema.org Organization from name, URL, optional logo/phone/email.	Read-only
`build_howto_jsonld` Build HowTo JSON-LD	schema.org HowTo from named steps. Not a rich-results test.	Read-only
`build_breadcrumb_jsonld` Build BreadcrumbList JSON-LD	schema.org BreadcrumbList from name/URL crumbs. Not Google's Rich Results Test.	Read-only
`build_product_jsonld` Build Product JSON-LD	schema.org Product + Offer. Default currency SAR. Not a rich-results test.	Read-only
`build_article_jsonld` Build Article JSON-LD	schema.org Article from headline, URL, datePublished and author.	Read-only
`build_website_jsonld` Build WebSite JSON-LD	schema.org WebSite, optional SearchAction if searchUrl includes {search_term_string}.	Read-only
`build_event_jsonld` Build Event JSON-LD	schema.org Event from name, start, optional place. Not a rich-results test.	Read-only
`build_review_jsonld` Build Review JSON-LD	schema.org Review + Rating. Not a rich-results test.	Read-only
`build_video_jsonld` Build VideoObject JSON-LD	name, description, thumbnailUrl, uploadDate, optional contentUrl.	Read-only
`build_og_tags` Build Open Graph tags	og:title, og:description, og:url and optional og:image as HTML meta tags.	Read-only
`build_twitter_tags` Build Twitter Card tags	twitter:card, title, description, url and optional image as HTML meta tags.	Read-only
`build_canonical` Build a canonical tag	<link rel="canonical"> for an absolute http(s) URL. Does not fetch.	Read-only
`build_meta_robots` Build a robots meta tag	index/follow plus optional noarchive, nosnippet, noimageindex.	Read-only
`build_hreflang` Build hreflang tags	rel=alternate hreflang link tags, optional x-default. Does not fetch.	Read-only
`build_robots_txt` Build a robots.txt	Generate a robots.txt with Disallow/Allow, optional sitemap, optional AI-bot block.	Read-only
`build_llms_txt` Build an llms.txt	Generate an llmstxt.org file body (title, summary, doc links). You still deploy /llms.txt.	Read-only
`build_web_manifest` Build a web app manifest	site.webmanifest JSON (name, start_url, theme_color, display). You still host the file.	Read-only
`build_humans_txt` Build a humans.txt	A colophon file body. You still deploy /humans.txt.	Read-only
`build_security_txt` Build a security.txt	RFC 9116 file body (Contact, Expires, optional languages/canonical/policy). You still deploy it.	Read-only
`build_ads_txt` Build an ads.txt	DIRECT/RESELLER lines. You still deploy /ads.txt. Inspect the live file with ads.txt.	Read-only
`preview_snippet` Preview a SERP snippet	Character counts for a title and meta description against usual Google display limits.	Read-only
`keyword_density` Keyword density	Token counts for pasted text. Rough: no stop-word list, no stemming.	Read-only
`slugify` Slugify text	Turn a heading into a URL slug (letters and numbers, hyphens). Arabic letters are kept.	Read-only
`normalize_url` Normalize a URL	Force https, optionally add/strip www and trailing slash. Drops the hash.	Read-only
`parse_query` Parse query parameters	List key=value pairs on an http(s) URL. Does not fetch.	Read-only
`build_query` Build a query string	Append key/value pairs to a URL.	Read-only
`encode_url` Percent-encode text	encodeURIComponent, or decode. For query values, not a full URL builder.	Read-only
`convert_punycode` Punycode a hostname	ASCII (xn--) ↔ Unicode IDNA. Useful for Arabic domain names. Does not look up DNS.	Read-only
`build_redirects` Build 301 redirect rules	From a list of from,to pairs, emit nginx, Netlify _redirects or vercel.json.	Read-only
`extract_urls` Extract URLs from text	Unique http(s) URLs in pasted text. Does not fetch them.	Read-only

Requirements

• A ToolCargo account with Site Audit activated (free).

Limitations

• Builders only: they do not fetch the live page or run Google's rich-results test.
• Single-tool URLs such as /mcp/json-ld-faq remain available for existing keys.

Supported clients

“Tested” means we connected that client to this endpoint and ran a tool call ourselves. “Documented” means the client supports this setup per its own docs, but we have not tested it yet.

Claude Code	API key header	Tested	Remote HTTP server with an Authorization header. Tested 2026-09-11 (v2.1.268).
Claude (claude.ai)	OAuth sign-in	Tested	Custom connector with OAuth sign-in; tested on claude.ai web 2026-09-11. Desktop and mobile use the same account connectors but were not tested separately.
Cursor	API key header	Documented, not yet tested	mcp.json with url and headers.
VS Code (Copilot agent mode)	API key header	Documented, not yet tested	.vscode/mcp.json with type http and headers.
ChatGPT (developer mode)	OAuth sign-in	Documented, not yet tested	Requires OAuth; API keys cannot be entered.
MCP Inspector	API key header	Tested	CLI mode, tested 2026-09-11. Useful for calling tools directly.

Pricing

Free

For trying the connector on your own sites.

50 calls/month · 25 links per check

Pro

$12/mo

For freelancers and agencies auditing client sites every week.

2,000 calls/month · 100 links per check

Proposed test price. See the pricing page for checkout status.

Full pricing and billing details