the402 endpoint detail

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app.heinrichstech.com cdp jwt-verify

https://app.heinrichstech.com/v1/cdp/jwt-verify

payable, partial

BitBooth JWT Verify: pay 0.001 USDC, verify a JWT signature + canonical claims (iss / aud / exp / nbf) against an inline publicKey (PEM) or sharedSecret. Supports HS256/384/512 and RS256/384/512. Constant-time HMAC compare, configurable clock-skew tolerance, alg=none rejected. Stateless — caller supplies their key in the request body, BitBooth never stores it.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse. It advertises 8 ways to pay and only 6 of them are usable.
Price
$0.001
Network
base
Pay to
0xDa2F35d283c42dd60B965322394bc658a5c1769F
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
55 ms
Payment options
6 usable of 8
Last checked
2026-08-10T09:13:57.884Z (1d ago)
Category
identity

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapp.heinrichstech.com%2Fv1%2Fcdp%2Fjwt-verify"