the402 endpoint detail

← All endpoints

api.usenami.io perp funding-flips

https://api.usenami.io/v1/perp/funding-flips

payable

Funding-rate sign-change detection for one crypto perpetual — every positive↔negative flip across venues inside a lookback window, each with its venue, hour and the rates either side of the change. Raw events for spotting funding-regime turns in funding-arb and carry positioning: it reports the flips, it does not classify them as sustained or transient.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.003
Network
base
Pay to
0x1538726707212F4dB3EB67cEc0910422A310475c
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
626 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:14:46.638Z (1d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.usenami.io%2Fv1%2Fperp%2Ffunding-flips"