Domain availability, domain name search
Is a domain name free? Check one name across up to 20 TLDs at once (default com, net, org, io, ai, co, app, dev, xyz, me): available, taken (with registrar, creation and expiry dates) or likely available, from each registry's RDAP server, with DNS where a TLD has no RDAP. Use to pick a product or company name, or to check a brand before launch. Availability is not a price quote: premium and reserved names exist.
Inputs
| Name | Type | Description |
|---|---|---|
name (required) | string | The name to check, with or without a TLD (acme, acme.com) |
tlds | string | TLDs to check, comma-separated (default com,net,org,io,ai,co,app,dev,xyz,me) |
Request
Over HTTP, with a card key from /credits:
curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/domain/availability?name=agentdatatools"Or one of your 25 free calls, no key:
curl "https://tools.funwords.eu/domain/availability?name=agentdatatools&trial=1"Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.
Example result
{
"name": "agentdatatools",
"available": [
"agentdatatools.com",
"agentdatatools.net"
],
"results": [
{
"domain": "agentdatatools.com",
"status": "available",
"method": "rdap"
},
{
"domain": "agentdatatools.net",
"status": "available",
"method": "rdap"
}
]
}From an AI agent (MCP)
Add the MCP server to Claude, Cursor or any MCP client. This tool is domain_availability, and the first 25 successful calls are free:
https://tools.funwords.eu/mcp