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x402-tollbooth.onrender.com

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.

Visit x402-tollbooth.onrender.com

Hostx402-tollbooth.onrender.com
Price$0.005–$0.01 per call
NetworkBase
Paid endpoints listed2
Calls, last 30 days*13
Most unique payers on one endpoint (30 days)*4
Last paid call*2026-10-14

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URLMethodPrice
https://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…		POST$0.005
https://x402-tollbooth.onrender.com/api/domain-trust
Check whether a domain or email address is trustworthy before you contact it, sign it up, or trust it. Returns a…		GET$0.01

Source: x402 Bazaar discovery API (Coinbase CDP) · Licence: Public discovery metadata; descriptions by each provider. Listed in x402 pay-per-call APIs. We list tools; we do not test, rate or endorse them.

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