the402 endpoint detail

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api.magentlab.com calc cryoprecipitate

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

answers 402

Cryoprecipitate bag estimate from the AABB Technical Manual calculation as reprinted in Nascimento 2011: 70 mL/kg blood volume, 250 mg fibrinogen per bag, bags = ceil(mg_fibrinogen / 250). Deterministic published arithmetic with citation. Not a transfusion order or major-haemorrhage protocol. The paper notes 100% recovery is likely false and fibrinogen per bag varies. magent does not choose a prod

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
94 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:17:50.413Z (2h ago)
Category
other

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