the402 endpoint detail

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api.octodamus.com polymarket odds

https://api.octodamus.com/v2/polymarket/odds

payable

Live crypto prediction-market facts from Polymarket: normalized YES/NO odds (implied probability), 24h volume, liquidity, CLOB order-book spread, and resolution status per market. Not a prediction.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.02
Network
base
Pay to
0x5c6B3a3dAe296d3cef50fef96afC73410959a6Db
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
234 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:12:32.476Z (1d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.octodamus.com%2Fv2%2Fpolymarket%2Fodds"