Marketplace · API · x402

x402-tollbooth.onrender.com/api/verify

Check whether email addresses are real and safe to send to. Verifies up to 25 addresses per call: syntax, domain MX/A record (including null-MX), disposable-domain, role-account, free-provider and typo checks. Does not perform SMTP/mailbox verification.

Endpoint	`https://x402-tollbooth.onrender.com/api/verify`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xF1E6050f7F7B6a26BBFc9C2884Cdd5720D1bedfe
method	POST
last updated	2026-11-01T08:02:22.64Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402-tollbooth.onrender.com/api/verify
# 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-be0f999f8c8c8933

Search the whole marketplace from your agent (MCP)

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