Your account will not be charged for using this function. You can get the results of the task within the next 30 days for free.
The cost can be calculated on the Pricing page.
OnPage API Microdata
This endpoint is designed to validate structured JSON-LD data and Microdata. Using this function you will obtain microdata available on the specified page of the target website and detailed results of its validation.
To use this endpoint, set the validate_micromarkup parameter to true in the POST request to OnPage API.