AIsa, an enterprise AI proxy infrastructure company, has completed a seed round expansion financing, with Tether and HIVEN joining as strategic investors, with a cumulative financing amount exceeding $9 million. AIsa's existing investors include Alibaba, Tribe Capital, Sumitomo Corporation, Draper Associates, and Saison Capital. AIsa builds an infrastructure that supports AI agents to discover, access, and pay for resources globally, connecting enterprise AI agents with external data, AI search, models, and more API、 Software tools and industry services, as well as providing permission management, usage measurement, billing, and settlement.