the402 endpoint detail

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api.x402node.dev web headers

https://api.x402node.dev/web/headers

payable

Fetch URL and return all HTTP response headers plus security audit (HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy). Returns security_score 0-100 and missing headers list. Built for security agents and compliance audits. Use url param Accepts payment on Base or Solana — either network works.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.008
Network
base
Pay to
0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
45 ms
Payment options
2 usable of 2
Last checked
2026-08-10T09:18:55.924Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.x402node.dev%2Fweb%2Fheaders"