the402 endpoint detail

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402oracle.com verify freshness

https://402oracle.com/verify/freshness

answers 402

Check that a URL is live and current before your agent acts on its contents. Returns HTTP status, Last-Modified/ETag, a content SHA-256, and whether it changed versus a prior hash. Returns a signed attestation.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.02
Network
base
Pay to
0x7a19cd388c7f69145fef09b960853e0a429b6f4a
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
53 ms
Payment options
3 usable of 3
Last checked
2026-09-06T01:13:33.199Z (2h ago)
Category
identity

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2F402oracle.com%2Fverify%2Ffreshness"