structured data · agent tools

Inspect the machine-readable web.

Inspect, validate and test structured data & agent tools — on any website. Everything runs locally; nothing is uploaded.

Manifest V3vanilla JSlocal-only0 trackingWebMCP

Add to Chrome — free See it in action ☕ Buy me a coffee

Available for Chrome, Firefox and Safari.

jsonld-inspector — active tab

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Trail Runner GTX",
  "offers": {
    "@type": "Offer",
    "price": "149.00",
    "priceCurrency": "EUR"
  }
}
</script>

✓ 3 blocks✓ 0 errors1 warningreadiness 87/100

// what it does

Everything a technical SEO checks — in one panel

structured data

Structured data

Detect and validate every JSON-LD block (plus Microdata & RDFa), with per-block errors and schema.org links.

on-page seo · headers

On-page SEO & headers

Meta tags, headings, Open Graph & Twitter, hreflang, images and links — plus HTTP headers and indexability.

agent tools · webmcp

Agent tools

Inspect the WebMCP tools a page exposes and test them safely — destructive tools are gated behind confirmation.

agent readiness

Agent readiness

A transparent, local 0–100 score with llms.txt, robots.txt, sitemap and ai.txt checks.

// screenshots

Screenshots

The real extension UI, rendered in your language.

Structured Data: Inspect JSON-LD in one click — Structured Data — Inspect JSON-LD in one click

Validation: Spot errors and warnings instantly — Validation — Spot errors and warnings instantly

Agent Tools · WebMCP: See a website's agent tools — Agent Tools · WebMCP — See a website's agent tools

Safety first: Test agent tools safely — Safety first — Test agent tools safely

Agent Readiness: Improve your Agent Readiness Score — Agent Readiness — Improve your Agent Readiness Score

On-Page SEO: Audit on-page SEO at a glance — On-Page SEO — Audit on-page SEO at a glance