> ## 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. # Keyword Density > This endpoint will provide you with keyword density and keyword frequency data for terms appearing on the specified website or web page. ## OpenAPI ````yaml openapi/dataforseo.json POST /dataforseo/on_page/keyword_density 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/keyword_density: post: summary: Keyword Density description: >- This endpoint will provide you with keyword density and keyword frequency data for terms appearing on the specified website or web page. You can filter and sort the data that will be retrieved with this API call. operationId: post_dataforseo_on_page_keyword_density 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” keyword_length: type: integer description: >- number of words for a keyword required field possible values: 1, 2, 3, 4, 5 url: type: string description: >- page URL optional field if you do not specify a page here, the results will be provided for the whole website if you use this field, the API response will contain only keywords from the specified page a page should be specified with absolute URL (including http:// or https://) limit: type: integer description: >- the maximum number of returned keywords optional field default value: 100 maximum value: 1000 filters: type: array items: type: string description: >- array of results filtering parameters optional field you can add several filters at once (8 filters maximum) you should set a logical operator and, or between the conditions the following operators are supported: regex, not_regex, =, , in, not_in, like, not_like you can use the % operator with like and not_like to match any string of zero or more characters example: ["keyword","=","%seo%"] [["keyword","=","%seo%"], "and", ["frequency"," [["keyword","not_like","%seo%"], "and", [["frequency",">","6"],"or",["density",">","0.02"]]] The full list of possible filters is available by this link. order_by: type: array items: type: string description: >- results sorting rules optional field you can use the same values as in the filters array to sort the results possible sorting types: asc – results will be sorted in the ascending order desc – results will be sorted in the descending order you should use a comma to set up a sorting type example: ["frequency,desc"] note that you can set no more than three sorting rules in a single request you should use a comma to separate several sorting rules example: ["keyword,asc","frequency,desc"] 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 - keyword_length 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.total_items_count: type: integer description: >- total number of relevant items total number of keywords on the specified website or web page matching the set keyword_length and filters 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.items.keyword: type: string description: returned keyword tasks.result.items.frequency: type: integer description: >- keyword frequency number of times the keyword appears on the website (or webpage if you specified a url) tasks.result.items.density: type: integer description: >- keyword density calculated as a ratio of frequency to the total count of keywords with the set keyword_length on the web page or website '400': description: Bad request '401': description: Unauthorized '429': description: Rate limit exceeded '500': description: Internal server error components: securitySchemes: BearerAuth: type: http scheme: bearer ````