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CP-SSS Calculator (Cincinnati Prehospital Stroke Severity Scale)
x402
CP-SSS Calculator (Cincinnati Prehospital Stroke Severity Scale) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Computes the Katz 2015 Cincinnati Prehospital Stroke Severity Scale (CP-SSS) score from gaze deviation, level of consciousness, and arm weakness to flag potential large-vessel occlusion stroke.
Price / call$0.005
Success—
StatusUnknown
How this service works
Katz 2015 Cincinnati Prehospital Stroke Severity Scale (CP-SSS): gaze deviation 2 if present else 0 + abnormal LOC 1 + arm cannot hold 10 s 1. Max 4. severe_stroke_suggested iff score ≥ 2. Not the 3-item CPSS facial/arm/speech screen, not NIHSS, not a tPA decision. magent does not examine the patient.
Output
Returns the total CP-SSS score (integer 0–4, where gaze deviation contributes 0 or 2 points and each of LOC abnormality and arm weakness contribute 1 point each), plus a boolean or equivalent flag indicating whether the score is ≥ 2 (severe stroke suggested). Does not make treatment decisions or tPA recommendations.
Example use cases
Prehospital LVO triage decision
“EMS is on scene with a patient showing conjugate gaze deviation present, abnormal level of consciousness (can't state their age), and arm weakness with no effort against gravity. Run the CP-SSS and tell me if the score hits the severe stroke threshold.”
Negative screen — no severe stroke features
“Check the CP-SSS for a patient with no gaze deviation, normal LOC, and arm weakness only — gaze deviation absent (0), LOC normal, arm weakness true. Is there a severe stroke flag?”
Clinical documentation and handoff support
“I need the CP-SSS score documented for a stroke alert patient: gaze deviation present, level of consciousness abnormal, no arm weakness detected. Give me the total score and whether severe stroke is suggested.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/cpsssWhen to prefer
Use this endpoint when you need a programmatic, auditable CP-SSS calculation based on the Katz 2015 three-item scale (gaze deviation, LOC, arm weakness) — especially in prehospital or emergency triage workflows where consistent scoring and large-vessel occlusion flagging are needed. Prefer this over manual arithmetic when integrating stroke scoring into an automated clinical decision-support pipeline. Do not use as a substitute for the classic three-item CPSS (facial droop/arm drift/speech), for NIHSS computation, or for tPA eligibility determination.
Side effects
- Missing required query parameters (gaze_deviation, loc_abnormal, arm_weakness) returns a validation error
- gaze_deviation supplied as 1 instead of 0 or 2 is rejected (enum constraint)
- Network or payment failure returns HTTP 402 or 5xx
- Caller misclassifies clinical findings before input — garbage in, garbage out; the API cannot examine the patient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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