DomainEthos is a domain appraisal and portfolio management platform powered by AI for value estimates and strategic insights. Its appraisal engine offers three tiers, from quick checks to detailed reports, with dual valuations for investors and end-users. Full appraisals assess linguistic quality, commercial viability, brand appeal, memorability, cultural fit, and market timing, while deep dive reports add sales data, keyword insights, liquidity scoring, and five-year projections. Portfolio tools support bulk appraisals, value tracking, and imports via CSV or API. Marketplace features include custom landing pages, offer workflows, escrow management, and visitor analytics. Social tools enable investor profiles, portfolio showcases, and a follow system. Developer integrations include a REST API, MCP server for AI agents, and secure authentication options like multi-factor and passkey login. Security features include device management and audit logs.