Thousands of documents, which appear to come from Google’s internal Content API Warehouse, were released March 13 on Github by an automated bot called yoshi-code-bot
https://github.com/yoshi-code-bot/elixir-google-api/commit/d7a637f4391b2174a2cf43ee11e6577a204a161e
Google Search document leak reveals inner workings of ranking algorithm
The documents reveal how Google Search is using, or has used, clicks, links, content, entities, Chrome data and more for ranking.
Anonymous Source Shared Thousands of Leaked Google Search API Documents with Me; Everyone in SEO Should See Them
https://sparktoro.com/blog/an-anonymous-source-shared-thousands-of-leaked-google-search-api-documents-with-me-everyone-in-seo-should-see-them/