SEO still relies on basics: a clear title and description, sensible wording on the page, and a way for crawlers to find URLs. Dedicated generators for those jobs are useful, but they are not live on Nexora Tools yet.
A meta tag generator would output copy-paste HTML from a title and description. A keyword-density checker would count how often a term appears in text you paste. A sitemap generator would emit XML. Those pages are reserved and unpublished until they actually work. Until then, write titles by hand and use Search Console for sitemaps.
Tools you can use today include the JSON Formatter, Word Counter, and URL Encoder.