FiatDock
POST https://fiatdock.com/v1/email/check
Listed in Coinbase x402 Bazaar
Is this email address worth sending to? Syntax, domain DNS (MX, then A/AAAA), disposable/role/free-provider lists, a typo suggestion (gmial.com -> gmail.com), a normalized form and a risk verdict with reasons. No SMTP probe: it vouches for the domain, never the mailbox. An invalid address is a paid verdict; a DNS failure is 502, not charged. Pay-per-call via x402. An empty body is answered for the published example address (name@example.com); send {"email":"…"} for any other address.
Other endpoints from fiatdock.com
The same service's other paid functions that Hagglyai tracks, each with its own price. Functions outside Hagglyai's categories are not listed.
| Endpoint | Category | Price per call |
|---|---|---|
| POST /s/svc_094b4a1e-5934-4c90-8a37-38fb89b13fc7 | Stocks & forex | $0.01 |
| POST /s/svc_1d39a507-23e4-48fb-b654-bd1e994c8d64 | Crypto prices & market data | $0.3 |
| POST /s/svc_41798c6f-42a4-496c-bd63-be2cd8806a88 | Web page extraction | $0.01 |
| POST /s/svc_7649608e-480e-4ca0-9e8f-b1423cdab6c6 | Products & prices | $0.008 |
| POST /s/svc_8886dcc7-958e-4d68-ac45-c55717ea044f | Stocks & forex | $0.01 |
| POST /s/svc_8b5c724e-a162-4b80-9976-7975b58c1552 | Web page extraction | $0.005 |
| POST /s/svc_942912bb-a21b-4de3-bfcc-c168eda28ce8 | Stocks & forex | $0.01 |
| POST /v1/chain/block | On-chain data | $0.001 |
| POST /v1/fx/rates | Stocks & forex | $0.001 |
| POST /v1/news/crypto | News | $0.001 |
| POST /v1/news/hackernews | News | $0.0027 |
| POST /v1/sec/filings | Stocks & forex | $0.0027 |
| POST /v1/token/screener | Crypto prices & market data | $0.009 |
| POST /v1/weather/forecast | Weather | $0.0018 |
| POST /v1/web/contacts | People & company enrichment | $0.0027 |
| GET /v1/web/read | Web page extraction | $0.0018 |
| POST /v1/web/read | Web page extraction | $0.0018 |
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 POST "https://fiatdock.com/v1/email/check"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-14 18:15 | Valid 402 | 402 | 928 ms | $0.001 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves