the402 endpoint detail

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agent402.tools api dkim-lookup

https://agent402.tools/api/dkim-lookup

answers 402

Fetch and parse a DKIM public-key record at <selector>._domainkey.<domain> (RFC 6376). Returns the parsed key params (algorithm, length, flags) so you can verify rotation status or key strength. Caller must know the selector - use email-deliverability if you don't.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.003
Network
base
Pay to
0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
118 ms
Payment options
13 usable of 13
Last checked
2026-09-06T01:16:32.369Z (19d ago)
Category
web-scraping

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fdkim-lookup"