Marketplace · API · x402

x402-api-catalog.onrender.com/api/domain-check

Domain liveness check / verify / audit: DNS resolution (A/MX/NS/TXT records), whether mail routing exists, HTTP reachability.

Endpoint	`https://x402-api-catalog.onrender.com/api/domain-check`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~972 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x9041f8a43D0B43209B9227DE2c7fb25c9FE3847E
method	GET
last updated	2026-10-26T18:53:54.441Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402-api-catalog.onrender.com/api/domain-check
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-6a91a8430b1a3c91

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}