Check Domain
check_domainCheck if a domain is available for purchase and get its price.
How it works ↓Pricing
Per call
$0.02
Model
flat
Pay only for what you use. No subscriptions.
Inputs
domain *
stringInput Parameters
Cost per run
Execution cost$0.02
About Check Domain
Check if a domain is available for purchase and get its price. Always call this before buy_domain. Show the user the price_display value (e.g. "$18.12") and confirm they want to proceed before buying. Args: domain: The full domain name to check (e.g. "coolstartup.com"). Returns: Dict with availability status, price in cents, and formatted price. If available, includes price_cents and price_display for the 1-year registration cost.
Frequently Asked Questions
Check if a domain is available for purchase and get its price. Always call this before buy_domain. Show the user the price_display value (e.g. "$18.12") and confirm they want to proceed before buying. Args: domain: The full domain name to check (e.g. "coolstartup.com"). Returns: Dict with availability status, price in cents, and formatted price. If available, includes price_cents and price_display for the 1-year registration cost.
Check Domain costs $0.02 per call on xpay. No subscription, no minimums. Pay only for the calls you make. New accounts get $5 in free credits.
Connect the InstaDomain MCP endpoint to your client — Claude Code: claude mcp add --transport http instadomain "https://instadomain.mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY"; Cursor/Windsurf/Cline/VS Code: same URL in mcp.json. The agent will see check_domain as a callable tool with the input schema and run it directly. (Unified across all providers: https://mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY, then xpay_run with toolPath instadomain/check_domain.)
Yes — that's exactly what xpay is for. You don't need a InstaDomain account or API key. Sign up at xpay.tools (Google or email), get $5 free credit, and run Check Domain immediately. Billing flows through your xpay balance.
Check Domain accepts 1 input parameter: domain. See the input schema and runnable form on this page for details and to test live.