check_domains
ClaudeCheck whether domain names are actually available to register, using live registry (RDAP) data. Use this when suggesting domain names (verify availability before presenting them — never assume a name is unregistered) or when the user asks whether specific domains are available. Accepts up to 50 fully-qualified domains (e.g. 'brewlog.app'). Returns availability, the registrar for taken domains, a 0-100 brandability score, an estimated resale value, the price in USD (price_usd for term_years — quote it rather than estimating; price_source 'checkout' is the expected charge at buy_url, confirmed before payment), and buy_url, the domhaul checkout page where the user can purchase the domain. If too few names are available, generate more candidates and call again.
