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Domain Availability Checker · domain-availability-checker.underscoredone.com

Give this API up to 10 domain names and it tells you whether each has…

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.

Ready now5 calls · 3 buyers in 30 days

Input

Sample response

Published by the provider. Your run returns a fresh response.

response5 keys
api_version"1.0.0"
count2
disclaimer"Status reflects whether a registration record exists. It does not confirm price, premium status, or that an 'unregistered' name is purchasable at standard cost."
queried_at"2026-06-26T09:00:00Z"
results2 items
responseobject, 5 keys
Your agent can do this on its own
Add the MCP URL in Claude Code, Cursor or Codex. Your agent can run Tools within its spending limits, or ask for approval each time. Connect your agent

Connect your agent

Add one MCP URL and your agent can find and run this tool within its spending limits. Choose “Ask each time” if you want to approve every Call.

MCP URL

https://app.aecon.ai/mcp
Terminalbash
claude mcp add --transport http --scope user agentic-economy "https://app.aecon.ai/mcp"

In Claude Code, open /mcp, select agentic-economy, then choose Authenticate.

Track record

Paid calls, last 30 days
5
Buyers, last 30 days
3
Last paid call

Reported by the x402 directory.

A$0.015 per call