the402 endpoint detail

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api.magentlab.com calc karnofsky

https://api.magentlab.com/api/calc/karnofsky

answers 402

Karnofsky 1949 Performance Status: caller-assigned integer 10, 20, 30, 40, 50, 60, 70, 80, 90, or 100 (normal; minor signs or symptoms; normal activity with effort; cares for self; occasional assistance; considerable assistance and frequent medical care; disabled; severely disabled; very sick, hospitalization necessary; moribund). Grade 0 (dead) is not scored. Returns score, max 100, and a stable

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x836Be278f1739fB4308091cD1852F7971Bc19Ee2
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
61 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:17:26.305Z (2h ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fkarnofsky"