> ## Documentation Index > Fetch the complete documentation index at: https://aisa.one/docs/llms.txt > Use this file to discover all available pages before exploring further. # OnPage API Microdata > This endpoint is designed to validate structured JSON-LD data and Microdata. ## OpenAPI ````yaml openapi/dataforseo.json POST /dataforseo/on_page/microdata openapi: 3.0.3 info: title: DataForSEO API version: 1.0.0 description: DataForSEO API endpoints exposed through the AIsa unified gateway. servers: - url: https://api.aisa.one/apis/v1 security: - BearerAuth: [] paths: /dataforseo/on_page/microdata: post: summary: OnPage API Microdata description: >- 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. operationId: post_dataforseo_on_page_microdata requestBody: required: true content: application/json: schema: type: object properties: id: type: string description: >- ID of the task required field you can get this ID in the response of the Task POST endpoint example: "07131248-1535-0216-1000-17384017ad04" url: type: string description: >- resource URL required field you can get this URL in the response of the Pages endpoint example: https://dataforseo.com/apis tag: type: string description: >- user-defined task identifier optional field the character limit is 255 you can use this parameter to identify the task and match it with the result you will find the specified tag value in the data object of the response required: - id - url responses: '200': description: Successful response content: application/json: schema: type: object properties: version: type: string description: the current version of the API status_code: type: integer description: >- general status code you can find the full list of the response codes here Note: we strongly recommend designing a necessary system for handling related exceptional or error conditions status_message: type: string description: >- general informational message you can find the full list of general informational messages here time: type: string description: execution time, seconds cost: type: number description: total tasks cost, USD tasks_count: type: integer description: the number of tasks in the tasks array tasks_error: type: integer description: >- the number of tasks in the tasks array returned with an error tasks: type: array items: type: string description: array of tasks tasks.id: type: string description: >- task identifier unique task identifier in our system in the UUID format tasks.status_code: type: integer description: >- status code of the task generated by DataForSEO; can be within the following range: 10000-60000 you can find the full list of the response codes here tasks.status_message: type: string description: >- informational message of the task you can find the full list of general informational messages here tasks.time: type: string description: execution time, seconds tasks.cost: type: number description: cost of the task, USD tasks.result_count: type: integer description: number of elements in the result array tasks.path: type: array items: type: string description: URL path tasks.data: type: object description: >- contains the same parameters that you specified in the POST request tasks.result: type: array items: type: string description: array of results tasks.result.crawl_progress: type: string description: >- status of the crawling session possible values: in_progress, finished tasks.result.crawl_status: type: object description: details of the crawling session tasks.result.crawl_status.max_crawl_pages: type: integer description: >- maximum number of pages to crawl indicates the max_crawl_pages limit you specified when setting a task tasks.result.crawl_status.pages_in_queue: type: integer description: number of pages that are currently in the crawling queue tasks.result.crawl_status.pages_crawled: type: integer description: number of crawled pages tasks.result.test_summary: type: object description: microdata validation test results tasks.result.test_summary.fatal: type: integer description: number of fatal microdata errors tasks.result.test_summary.error: type: integer description: number of serious microdata errors tasks.result.test_summary.warning: type: integer description: number of microdata warnings tasks.result.test_summary.info: type: integer description: number of microdata information flags tasks.result.items_count: type: integer description: number of items in the results array tasks.result.items: type: array items: type: string description: items array tasks.result.type: type: string description: type of the item = ‘json_ld’ tasks.result.inspection_info: type: object description: information related to microdata validation tasks.result.inspection_info.types: type: array items: type: string description: >- parent microdata types for a full list of available types, please visit schema.org tasks.result.inspection_info.fields: type: array items: type: string description: >- microdata fields an array of objects containing data fields related to the certain microdata type tasks.result.inspection_info.fields.name: type: string description: field name name of the data field tasks.result.inspection_info.fields.types: type: array items: type: string description: list of microdata sub-types tasks.result.inspection_info.fields.value: type: array items: type: string description: >- microdata value microdata value specified on a target web page tasks.result.inspection_info.fields.test_results: type: object description: >- microdata validation test results sub-type microdata test results that contain detected errors and related messages tasks.result.inspection_info.fields.test_results.level: type: string description: >- level of microdata error can take the following values: fatal, error, warning, info tasks.result.inspection_info.fields.test_results.message: type: string description: >- message associated with an error message providing the details of the detected error tasks.result.inspection_info.fields.fields: type: array items: type: string description: >- microdata fields an array of objects containing data fields related to the certain microdata type '400': description: Bad request '401': description: Unauthorized '429': description: Rate limit exceeded '500': description: Internal server error components: securitySchemes: BearerAuth: type: http scheme: bearer ````