Live

Schema Validator

Validate Schema.org JSON-LD markup from any URL, $0.01 per check

From $0.01/query USDC on Base API: https://schema-validator.fly.dev/

Endpoints

GET /validate?url={url}

Fetch URL, extract all JSON-LD blocks, validate each against Schema.org

Price: $0.01

curl https://schema-validator.fly.dev/validate?url=https://xshielder.com/

{"url":"https://xshielder.com/","schemas_found":5,"valid":false,"total_errors":2,"total_warnings":8,"types":["Organization","WebPage","FAQPage","Service","Organization"],"results":[...]}

POST /validate

Validate raw JSON-LD from request body

Price: $0.01

curl -X POST https://schema-validator.fly.dev/validate -H 'Content-Type: application/json' -d '{"@context":"https://schema.org","@type":"Product","name":"Widget"}'

{"schemas_found":1,"valid":true,"total_errors":0,"total_warnings":5,"types":["Product"],"results":[...]}

GET /preview?url={url}

Free preview — count of schemas and types found, no validation details

Price: free

curl https://schema-validator.fly.dev/preview?url=https://xshielder.com/

About

Validates 25+ Schema.org types including Article, Product, Organization, LocalBusiness, FAQPage, Event, JobPosting, Recipe, VideoObject, BreadcrumbList, and more. Checks @context, @type, required properties, recommended properties, URL formats, and nested object structure.

Free /preview endpoint shows how many JSON-LD blocks exist and their types. Paid /validate returns full error/warning breakdown per schema with actionable codes.

Designed for AI agents doing SEO audits, content validation, and structured data monitoring.