{"uid":"cap_FUkEjLjE6hULFmBejqnO2","slug":"magent-nih-stroke-scale-brott-1989-calculator-6436474f","name":"magent NIH Stroke Scale (Brott 1989) Calculator","description":"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.","url":"https://api.magentlab.com/api/calc/nihss","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["loc","loc_questions","loc_commands","pupillary_response","best_gaze","best_visual","facial_palsy","best_motor_arm","best_motor_leg","plantar_reflex","limb_ataxia","sensory","neglect","dysarthria","best_language"],"properties":{"loc":{"enum":[0,1,2,3],"type":"integer","description":"Caller-assigned Brott 1989 level of consciousness (integer 0-3): 0 alert, 1 drowsy, 2 stuporous, 3 coma. magent does not examine the patient."},"neglect":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 neglect (integer 0-2): 0 no neglect, 1 partial neglect, 2 complete neglect. magent does not examine the patient."},"sensory":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 sensory (integer 0-2): 0 normal, 1 partial loss, 2 dense loss. magent does not examine the patient."},"best_gaze":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 best gaze (integer 0-2): 0 normal, 1 partial gaze palsy, 2 forced deviation. magent does not examine the patient."},"dysarthria":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 dysarthria (integer 0-2): 0 normal articulation, 1 mild to moderate, 2 near unintelligible or worse. magent does not examine the patient."},"best_visual":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 best visual (integer 0-2): 0 no visual loss, 1 partial hemianopia, 2 complete hemianopia. magent does not examine the patient."},"limb_ataxia":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 limb ataxia (integer 0-2): 0 absent, 1 present in upper or lower, 2 present in both. magent does not examine the patient."},"facial_palsy":{"enum":[0,1,2,3],"type":"integer","description":"Caller-assigned Brott 1989 facial palsy (integer 0-3): 0 normal, 1 minor, 2 partial, 3 complete. magent does not examine the patient."},"loc_commands":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 LOC commands (integer 0-2): 0 obeys both correctly, 1 obeys one correctly, 2 incorrect. magent does not examine the patient."},"best_language":{"enum":[0,1,2,3],"type":"integer","description":"Caller-assigned Brott 1989 best language (integer 0-3): 0 no aphasia, 1 mild to moderate, 2 severe aphasia, 3 mute. magent does not examine the patient."},"loc_questions":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 LOC questions (integer 0-2): 0 answers both correctly, 1 answers one correctly, 2 incorrect. magent does not examine the patient."},"best_motor_arm":{"enum":[0,1,2,3,4],"type":"integer","description":"Caller-assigned Brott 1989 best motor arm, weaker limb (integer 0-4): 0 no drift, 1 drift, 2 cannot resist gravity, 3 no effort, 4 no movement. Not left and right separately. magent does not examine the patient."},"best_motor_leg":{"enum":[0,1,2,3],"type":"integer","description":"Caller-assigned Brott 1989 best motor leg, weaker limb (integer 0-3): 0 no drift, 1 drift, 2 cannot resist gravity, 3 no effort. Not left and right separately. magent does not examine the patient."},"plantar_reflex":{"enum":[0,1,2,3],"type":"integer","description":"Caller-assigned Brott 1989 plantar reflex (integer 0-3): 0 normal, 1 equivocal, 2 extensor, 3 bilateral extensor. magent does not examine the patient."},"pupillary_response":{"enum":[0,1,2],"type":"integer","description":"Caller-assigned Brott 1989 pupillary response (integer 0-2): 0 both reactive, 1 one reactive, 2 neither reactive. magent does not examine the patient."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nNzE4QzG8n0GcQz_Z7H2-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the original Brott 1989 NIH Stroke Scale total score (0–37) from 15 caller-assigned neurological examination integers","exampleAgentPrompt":"Calculate the Brott 1989 NIHSS score for a patient with: LOC 1, LOC questions 1, LOC commands 0, pupillary response 1, best gaze 1, best visual 1, facial palsy 2, best motor arm 2, best motor leg 2, plantar reflex 1, limb ataxia 1, sensory 1, neglect 1, dysarthria 1, best language 1.","exampleUseCases":[{"title":"Stroke triage scoring in the ED","prompt":"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."},{"title":"Documenting baseline deficit before intervention","prompt":"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."},{"title":"Tracking neurological change over time","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:03:49.431Z","isFirstParty":false}