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httpagent-toolscdpultravioletadaothirdweb

domain-availability-checker.underscoredone.com

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 - but reserved and premium names also return no record. Registration status only; no pricing.

Resource URL

https://domain-availability-checker.underscoredone.com/check

Payment options

exactBase (8453)

$0.01 USDC

Max amount

Pay to
0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08
Timeout
300s
exactSolana

$0.01 USDC

Max amount

Pay to
8ugAWAXDB8V18kiUrGZTq1oMvU3C6Fxs8hfC6rvzQT3b
Timeout
300s

Tags

health:okNetworkdomain availabilityis domain availableis domain registeredcheck domain availabilitydomain name search

For agents

Prompt snippet for AI agents

Find and pay for this x402 resource:
URL: https://domain-availability-checker.underscoredone.com/check
Type: http
Sources: agent-tools, cdp, ultravioletadao, thirdweb

Developer