the402 endpoint detail

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api.magentlab.com calc cat

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

answers 402

Jones 2009 COPD Assessment Test (CAT): eight caller-assigned integers 0-5 (cough, phlegm, chest tightness, breathlessness, activities, confidence, sleep, energy). Sum 0-40. magent does not interview. Jones 2009 printed no GOLD 0-10/11-20/21-30/31-40 impact bands; later website cutoffs are not applied. Not a diagnosis, not GOLD ABE, not BODE, and not a medical device.

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
2026-09-06T01:17:55.181Z (2h ago)
Category
other

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