DemandSphere — independent third-party profile of a public API surface, by API Evangelist. DemandSphere is a unified AI search visibility platform (founded 2010, Y Combinator S10) that tracks brand presence across traditional search engine results pages, AI search engines (ChatGPT, Gemini, Perplexity, AI Overviews, AI Mode), and agentic surfaces.
api company analytics mcp seo ai-search apis-json llm-visibility rank-tracking search-intelligence serp-analytics
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Updated
Aug 28, 2026