the402 endpoint detail

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oracle.the-undesirables.com v1 arb-cross

https://oracle.the-undesirables.com/api/v1/arb-cross

answers 402

Scan for cross-platform prediction market arbitrage opportunities between Polymarket and Kalshi using Gen3 Neuro-Symbolic NLI matching. Identifies price discrepancies where the same event is priced differently across platforms, creating risk-free edge.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$1.00
Network
base
Pay to
0x642e8a7C289381f24f0395e0539f0bA41c74Cc1B
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
186 ms
Payment options
3 usable of 3
Last checked
2026-08-15T14:22:53.290Z (7d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Foracle.the-undesirables.com%2Fapi%2Fv1%2Farb-cross"