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magent NIH Stroke Scale (Brott 1989) Calculator
x402
magent NIH Stroke Scale (Brott 1989) 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).
Computes the original Brott 1989 NIH Stroke Scale total score (0–37) from 15 caller-assigned neurological examination integers
Price / call$0.005
Success—
StatusUnknown
How this service works
Brott 1989 NIH stroke scale: 15 caller-assigned exam integers including pupillary response (0-2) and plantar reflex (0-3), with weaker-limb motor arm (0-4) and motor leg (0-3). Sum 0-37. Not the later NINDS 11-category form, not mNIHSS, and not a tPA order. magent does not examine the patient. No total-score severity bands in Brott 1989; later website cutoffs are not applied. Not a diagnosis and not a medical device.
Output
Returns the summed Brott 1989 NIH Stroke Scale total score (integer, range 0–37) derived from the 15 caller-supplied neurological examination category integers. No severity band labels, no diagnosis, no treatment recommendation.
Example use cases
Stroke triage scoring in the ED
“I need to compute the original 1989 NIHSS total for a patient presenting with stroke: LOC 0, LOC questions 2, LOC commands 1, pupillary response 0, best gaze 2, best visual 2, facial palsy 1, best motor arm 3, best motor leg 2, plantar reflex 2, limb ataxia 0, sensory 1, neglect 1, dysarthria 2, best language 2.”
Documenting baseline deficit before intervention
“Before we proceed, I want a Brott 1989 NIHSS baseline score documented — LOC 0, LOC questions 0, LOC commands 0, pupillary response 1, best gaze 1, best visual 1, facial palsy 1, best motor arm 2, best motor leg 1, plantar reflex 0, limb ataxia 1, sensory 0, neglect 0, dysarthria 1, best language 1.”
Tracking neurological change over time
“Can you recalculate the NIHSS score for a follow-up assessment — LOC 0, LOC questions 1, LOC commands 0, pupillary response 0, best gaze 0, best visual 1, facial palsy 1, best motor arm 1, best motor leg 1, plantar reflex 1, limb ataxia 0, sensory 1, neglect 0, dysarthria 1, best language 0 — so I can compare it to the admission score?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/nihssWhen to prefer
Use this endpoint when you need to compute the original Brott 1989 15-category NIH Stroke Scale total score (0–37) from pre-assigned integer exam values, as distinct from the later 11-category NINDS form or the modified NIHSS (mNIHSS). Choose this when clinical documentation specifically references the 1989 version with pupillary response and plantar reflex items included. Not appropriate as a replacement for clinical examination, as a diagnostic tool, or for tPA eligibility decisions.
Side effects
- Missing any of the 15 required query parameters returns a validation error
- Integer values outside the allowed enum range for any category cause a rejected request
- Non-integer or string values for numeric fields result in a schema error
- Network or server errors may return 5xx responses
- Payment failure or insufficient funds returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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