Ahrefs API
Backlink, keyword and site data from Ahrefs
Brave Search API
Search API on Brave's independent index
DataForSEO
APIs for SERP, keywords and backlinks
Exa
Search API with neural and keyword modes
Keywords Everywhere
Keyword volume and CPC in search results
Moz API
Domain Authority and link metrics
Semrush API
Keyword, domain and backlink data from Semrush
Serper
Google search API that returns JSON
Tavily
Search API built for AI agents