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FAST-ED Stroke Severity Score Calculator
x402
FAST-ED Stroke Severity Score Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Calculates the Lima 2016 FAST-ED score from five neurological findings to help identify possible large vessel occlusion (LVO) in stroke triage
Price / call$0.005
Success—
StatusUnknown
How this service works
Lima 2016 FAST-ED (Field Assessment Stroke Triage for Emergency Destination): facial_palsy 0-1 + arm_weakness 0-2 + speech 0-2 + eye_deviation 0-2 + neglect 0-2. Max 9. lvo_suggested iff score ≥4. Bands 0_to_1 / 2_to_3 / gte_4. Time is documented for decision making (0 points, not scored). Not a stroke diagnosis or transfer order. magent does not examine the patient.
Output
Returns the computed FAST-ED total score (0–9), a boolean lvo_suggested flag (true if score ≥4), and the severity band (0_to_1, 2_to_3, or gte_4). Does not constitute a stroke diagnosis or transfer order.
Example use cases
EMS prehospital stroke triage
“We have a patient with no facial palsy (0), arm drift with some effort against gravity (1), mild to moderate speech changes (1), no eye deviation (0), and no neglect (0). What's the FAST-ED score and which severity band does that put them in?”
Stroke alert LVO screening in ED
“Can you run the FAST-ED scoring for a patient presenting with partial facial palsy (1), no arm movement against gravity (2), global aphasia so speech is 2, forced eye deviation (2), and the patient doesn't recognize own hand so neglect is 2? Is LVO suggested?”
Clinical audit documentation
“Log a FAST-ED calculation for a patient with these findings: facial palsy 0, arm weakness 1, speech 1, eye deviation 0, neglect 1 — what's the total score and severity band?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/fast_edWhen to prefer
Use this endpoint when you need a validated, reproducible FAST-ED score calculation based on the Lima 2016 scale and want a structured LVO suggestion flag and severity band — especially in prehospital or emergency department triage workflows where consistency and auditability matter. Prefer this over manual computation to avoid arithmetic errors and to get the standardized severity band classification automatically.
Side effects
- Missing required query parameter returns validation error
- Out-of-range integer (e.g. facial_palsy=2 or arm_weakness=3) returns schema validation error
- Non-integer or float values rejected
- Payment failure (402) if x402 payment header absent or insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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