Structured Data Tester API

POST https://api.findutils.com/api/tools/structured-data-tester/execute

Validate JSON-LD structured data (given directly or extracted from HTML <script type="application/ld+json"> blocks) and return, per detected schema.org type, the required and recommended properties that are present or missing, a pass flag, and rich-result eligibility for 15 supported types. Does not fetch URLs.

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Request body

application/json

json_ld

string optional

A JSON-LD document: one object, an array of objects, or an object with @graph. Use this OR html.
html

string optional

HTML source. Every <script type="application/ld+json"> block is extracted and validated.

Example arguments

Verified

{
  "json_ld": {
    "@context": "https://schema.org",
    "@type": "Person",
    "name": "Jane Doe"
  }
}

curl -X POST https://api.findutils.com/api/tools/structured-data-tester/execute \
  -H "Content-Type: application/json" \
  -d '{
    "json_ld": "{\"@context\":\"https://schema.org\",\"@type\":\"Person\",\"name\":\"Jane Doe\"}"
  }'

const response = await fetch('https://api.findutils.com/api/tools/structured-data-tester/execute', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({"json_ld":"{\"@context\":\"https://schema.org\",\"@type\":\"Person\",\"name\":\"Jane Doe\"}"}),
});
const data = await response.json();

import requests

response = requests.post(
    "https://api.findutils.com/api/tools/structured-data-tester/execute",
    json={"json_ld":"{\"@context\":\"https://schema.org\",\"@type\":\"Person\",\"name\":\"Jane Doe\"}"},
)
data = response.json()

$ch = curl_init('https://api.findutils.com/api/tools/structured-data-tester/execute');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
    CURLOPT_POSTFIELDS => '{"json_ld":"{\"@context\":\"https://schema.org\",\"@type\":\"Person\",\"name\":\"Jane Doe\"}"}',
    CURLOPT_RETURNTRANSFER => true,
]);
$data = json_decode(curl_exec($ch), true);

Also an MCP tool

Call structured_data_tester from Claude, Cursor or any MCP client. Same arguments, same output.

https://mcp.findutils.com

MCP reference

Rate limit: 60 a minute, per IP
Auth: None
REST id: structured-data-tester
MCP name: structured_data_tester
Category: SEO
Machine-readable: openapi.json · markdown.md

Request body

Example arguments

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