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api.magentlab.com calc qtc
https://api.magentlab.com/api/calc/qtc
answers 402
Heart-rate-corrected QT (Bazett or Fridericia). formula is required; magent does not pick one silently. Deterministic published correction with citation.
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
- 66 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:17:15.188Z (2h ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.magentlab.com%2Fapi%2Fcalc%2Fqtc"