api.paywallwatch.com
GET https://api.paywallwatch.com/v1/email/verify
Listed in Coinbase x402 Bazaar
Use when an agent has an email address from a form, a scrape or a CRM and must decide whether it is worth sending to. Screens the address: syntax, DNS mail exchanger, disposable domain, role account, free provider and common typos. It does not verify that the mailbox exists. A DNS failure answers 503 and is not charged.
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X GET "https://api.paywallwatch.com/v1/email/verify"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseEstimated calls per day
Paid calls to api.paywallwatch.com's tracked endpoints each day, estimated from the 30-day totals the x402 catalogues report. Each bar is the change in that 30-day total since the day before, plus the calls that left the 30-day window (taken as an average day). It is an estimate: Hagglyai does not measure or pay for these calls.
No usage reported for any of 1 tracked endpoint. Unknown usage is left out, not counted as zero.
Compared with other providers
Coverage matters: a provider whose endpoints report more of their usage can rank higher.
| # | Provider | Reported 30-day calls | Coverage |
|---|---|---|---|
| 1 | stableenrich.dev | 28,167 | 15 of 31 endpoints |
| 2 | win.oneshotagent.com | 15,583 | 13 of 36 endpoints |
| 3 | x402.orthogonal.com | 4,075 | 189 of 249 endpoints |
| 4 | agent402.tools | 3,118 | 142 of 217 endpoints |
| 5 | agent.pocket.network | 2,931 | 13 of 24 endpoints |
| 6 | api.losbeto.xyz | 1,297 | 20 of 107 endpoints |
| 7 | x402.ottoai.services | 1,256 | 28 of 32 endpoints |
| 8 | api.x402node.dev | 1,242 | 158 of 194 endpoints |