Validate schema.org JSON-LD structured data of a page URL or pasted markup: grade, score, coded issues with JSON paths and rich-result required-property checks.
Validate the JSON-LD structured data of a page URL: extracts every JSON-LD block, checks @context/@type, required and recommended properties of common rich-result types, and returns grade, score and coded issues with JSON paths.
Validate JSON-LD or HTML you send in (offline, no outbound request): same checks and report as /v1/check.
Request schema
JSON-LD object, array or JSON text
Page HTML (alternative to jsonld)
Easiest way: the APIHub CLI. Credits cover x402, no wallet needed.
# install and set up once
npx @apihubio/cli register
npx @apihubio/cli topup 10
# call this service
npx @apihubio/cli call -X GET "https://proxy.apihub.io/jsonld/v1/check?url=https://schema.org" \
-d '{"jsonld":null,"html":"example html"}'Or call the proxy directly (curl / any HTTP client):
curl https://proxy.apihub.io/jsonld/v1/check?url=https://schema.org \
-H "Authorization: Bearer ahk_your_key"
# If credits available: charged automatically, returns 200
# Otherwise: returns 402 (pay via @x402/fetch or top up credits)Estimate your monthly cost for JSON-LD Structured Data Validator.