the402 endpoint detail

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api.magentlab.com calc h2fpef

https://api.magentlab.com/api/calc/h2fpef

answers 402

Reddy 2018 H2FPEF points score. Six components, max 9: BMI >30 (2), >=2 antihypertensives (1), atrial fibrillation (3), echo PASP >35 mm Hg (1), age >60 (1), E/e' >9 (1). BMI 30 and age 60 do not score. Returns score and max_score only; odds roughly double per point. Not probability classes, not the continuous nomogram, not HFA-PEFF, not a diagnosis or cath substitute. magent does not read echo or

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
70 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:17:17.450Z (2h ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fh2fpef"