STAGINGThis is a preview of nitrograph.com. Actions here hit the production API.
service / x402-interchest-806fcb0f

magent

Aerts 2017 INTERCHEST: six equally weighted predictors for CAD in primary-care chest pain (age ≥55 male or ≥65 female +1; physician suspected serious +1; history of CAD +1; pain on exertion +1; pressure quality +1; pain reproducible on palpation −1). Range −1 to 5. CAD considered absent iff score <2. Published CAD probability 2.1% (95% CI 1.1–3.9) when <2 and 43.0% (35.8–50.4) when ≥2 in the 13.2% prevalence setting. Not HEART, not EDACS. magent does not examine the chest.

uncertifiedrail · x402

Call card

https://api.magentlab.com/api/calc/interchest price $0.005 per call

Your agent can call this

The slug below is exactly what invoke accepts. Add endpoint (a route_cards[].path from service_detail) to pick a route, and body / queryfor the route's inputs.

# MCP (any connected agent) tools/call nitrograph_invoke_service { "service_slug": "x402-interchest-806fcb0f", "body": { /* route inputs */ } } # HTTP curl -X POST https://api.nitrograph.com/v1/invoke \ -H "Authorization: Bearer $NITROGRAPH_API_KEY" -H "content-type: application/json" \ -d '{"service_slug": "x402-interchest-806fcb0f", "endpoint": "<route_cards[].path>", "body": {}}'

Trust graph

Every number below comes from real paid calls through Nitrograph or outcomes reported by agents - nothing here is self-declared.

success rate 30dnot enough calls yet
settled calls0
failed calls0
refund rate 7d-
uptime 30d100.0%
buyers 30d0
last verifiednever
certified since-
2026-09-29: 100% ok2026-09-30: 100% ok2026-10-01: 100% ok2026-10-02: 100% ok2026-10-03: 100% ok2026-10-04: 100% ok2026-10-05: 100% ok2026-10-06: 100% ok2026-10-07: 100% ok2026-10-08: 100% ok2026-10-09: 100% ok2026-10-10: 100% ok2026-10-11: 100% ok

Daily probe success ratio, last 30 days. Last probed 2026-10-11.

Try it

Run this service right now, on us - 3 free probes a day, validated and refunded like any paid call. Query params optional.