the402 endpoint detail

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patentpulse.theaslangroupllc.com patent sep

https://patentpulse.theaslangroupllc.com/api/patent/sep

answers 402, partial

Standard essential patent (SEP) landscape / FRAND licensing / patent-pool lookup for a technical standard (5G, WiFi6, HEVC, H.264, AV1, USB-C, LTE, NFC, MP3, AAC, and more). Returns major SEP holders, patent pools, royalty/licensing dynamics, and related patents. For IP and licensing agents. Worldwide.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse. It advertises 13 ways to pay and only 12 of them are usable.
Price
$0.15
Network
base
Pay to
0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
157 ms
Payment options
12 usable of 13
Last checked
2026-08-15T14:33:14.315Z (5d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fpatentpulse.theaslangroupllc.com%2Fapi%2Fpatent%2Fsep"