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magent ASTRAL Score Calculator
x402
magent ASTRAL 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 2026-09-13).
Computes the Ntaios 2012 ASTRAL integer score to predict 3-month unfavorable functional outcome (mRS >2) after acute ischemic stroke
Price / call$0.005
Success—
StatusUnknown
How this service works
Ntaios 2012 ASTRAL integer score for 3-month mRS >2 in acute ischemic stroke. Age 1/5 years + NIHSS (caller 0-42) + 2 if onset-to-admission >180 min + 2 if visual field defect + 1 if glucose <3.7 or >7.3 mmol/L (mg/dL /18) + 3 if impaired consciousness. Score 31 is 50% unfavorable. Not a tPA decision. magent does not compute NIHSS.
Output
Returns the computed ASTRAL integer score derived from weighted contributions of age, NIHSS, onset-to-admission delay, visual field defect, glucose level, and impaired consciousness; a score ≥31 indicates approximately 50% probability of unfavorable 3-month functional outcome (mRS >2). The endpoint does not compute NIHSS or assess the patient directly — all clinical values must be caller-supplied.
Example use cases
Stroke unit 3-month outcome prognostication
“My patient is a 68-year-old with acute ischemic stroke, NIHSS of 18, arrived more than 3 hours after onset, has a visual field defect, blood glucose on admission was 210 mg/dL, and consciousness is impaired — what's their ASTRAL score and how likely is a poor 3-month outcome?”
Neurology trainee learning ASTRAL thresholds
“Walk me through the ASTRAL score for a 55-year-old stroke patient with NIHSS 6, no delay over 180 minutes, no visual field defect, glucose of 5.0 mmol/L, and normal consciousness — and tell me whether the score crosses the 50% unfavorable-outcome threshold.”
Research data pipeline stroke scoring
“Score these acute ischemic stroke cases for ASTRAL: patient is 82 years old, NIHSS 22, admission was delayed more than 180 minutes, visual field defect is present, glucose 95 mg/dL, and consciousness is impaired.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/astralWhen to prefer
Choose this endpoint when you need a validated, guideline-referenced integer prognostic score for 3-month mRS outcome after acute ischemic stroke and all five required clinical inputs (age, NIHSS, delay, visual field defect, impaired consciousness) are already available from the clinician. It is not a tPA eligibility or treatment decision tool. Prefer it over manual calculation to avoid arithmetic errors in the weighted ASTRAL formula, especially in research pipelines or EHR-integrated clinical decision support.
Side effects
- Missing required parameters (age, nihss, delay_gt_180, visual_field_defect, loc_impaired) returns a validation error
- Both glucose_mg_dl and glucose_mmol_l supplied simultaneously causes a conflict error
- Age outside 18–120 or NIHSS outside 0–42 range may return a validation or out-of-range error
- Glucose value outside expected range (mg/dL 50–1000 or mmol/L 2.8–55.5) may be rejected
- Missing payment header (x402) results in 402 Payment Required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
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