{"info":{"title":"Underscoredone","version":"1.0.0"},"openapi":"3.1.0","paths":{"/check":{"post":{"responses":{"200":{"description":"Successful response"},"402":{"description":"Payment Required"}},"x-payment-info":{"offers":[{"amount":"10000","currency":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","description":"Underscoredone: Check","intent":"charge","method":"evm","recipient":"0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08"}]},"summary":"Give this API up to 10 domain names and it tells you whether each has a registration record at the official registry. It uses RDAP, the structured replacement for WHOIS, so there is no free-text parsing. Each domain comes back as 'registered', 'unregistered', or 'indeterminate' when the registry has no RDAP for that ending. 'Unregistered' means no record was found, which usually means available - "},"get":{"responses":{"200":{"description":"Successful response"},"402":{"description":"Payment Required"}},"x-payment-info":{"offers":[{"amount":"10000","currency":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","description":"Underscoredone: Check","intent":"charge","method":"evm","recipient":"0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08"}]},"summary":"Give this API up to 10 domain names and it tells you whether each has a registration record at the official registry. It uses RDAP, the structured replacement for WHOIS, so there is no free-text parsing. Each domain comes back as 'registered', 'unregistered', or 'indeterminate' when the registry has no RDAP for that ending. 'Unregistered' means no record was found, which usually means available - "}}},"x-service-info":{"description":"Underscoredone is an x402-native service at https://domain-availability-checker.underscoredone.com, indexed from the x402 Bazaar (Coinbase's public discovery directory). It charges callers itself in USDC on Base and is paid directly at its own wallet; Monex Protocol passes your request and payment headers through untouched. 1 endpoint listed."}}