Google Trends API
Live trending Google searches by country, with no key. This reads Google's own public Daily Search Trends RSS feed and returns it as clean JSON: what people are searching for right now in any country, each trend with its approximate search volume, the news stories driving it and a representative image. The trending endpoint lists the current trending searches for a country (term-centric, ranked, with volume and the top news story); the news endpoint flattens the news articles powering those trends (article-centric — the "what is driving search right now" view, each article tagged with its trend, source and link); and the geos endpoint lists the supported countries. The real-time search-interest / trends-discovery layer for news, marketing, SEO, social-listening and content tools. Distinct from wiki-pageview and platform-specific trend APIs — this is Google web-search trends. Live from Google Trends; short cache only.
api.oanor.com/googletrends-api