the402 endpoint detail

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api.magentlab.com calc grogan

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

answers 402

Grogan 2016 ATTRwt staging: 1 point when NT-proBNP >3000 ng/L; 1 point when cardiac TnT >0.05 ng/mL. Stage I = 0, II = 1, III = 2. Equal to a cutoff does not score. Cohort 4-year OS I 57% / II 42% / III 18%; stage III median 20 months (labels, not a prediction). Troponin T only. Not Gillmore NAC (no eGFR). Not Mayo AL. Not NYHA. magent does not assay the biomarkers.

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
81 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:17:55.635Z (2h ago)
Category
ai-inference

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