The upgraded project uses server-side endpoints for direct measurements and documented public services. It does not invent keyword volume, CPC, domain authority or backlink metrics.
Set PAGESPEED_API_KEY as a server environment variable if you want to use a Google API key for higher/reliable automated usage. Never expose private keys in frontend JavaScript.
Search volume, CPC, keyword difficulty, Domain Authority, Page Authority, Spam Score and backlink counts require a legitimate data provider or first-party authorization. The site labels unavailable proprietary metrics rather than manufacturing numbers.