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Hunt and Hess 1968 SAH Surgical-Risk Grade Calculator
x402
Hunt and Hess 1968 SAH Surgical-Risk Grade Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Returns the deterministic Hunt and Hess 1968 subarachnoid hemorrhage surgical-risk grade (1–5) with citation, adjusting one category worse if serious systemic disease is present, capped at grade 5.
Price / call$0.005
Success—
StatusUnknown
How this service works
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Output
Returns the final Hunt and Hess 1968 surgical-risk grade (integer 1–5), incorporating the one-step downward adjustment when serious systemic disease is present (capped at 5), along with the grade interpretation and a citation to the 1968 Hunt and Hess paper. Not a diagnosis; does not return WFNS or Hunt-Kosnik grades.
Example use cases
Pre-op SAH risk stratification
“I'm preparing a neurosurgery consult note — the patient's clinical presentation puts them at Hunt and Hess grade 2, and they have severe arteriosclerosis. What is their adjusted 1968 Hunt and Hess surgical-risk grade?”
ICU SAH triage documentation
“For our SAH registry entry, I need the official Hunt and Hess 1968 grade for a patient graded clinically at 4 with no serious systemic disease — please calculate and include the citation.”
Systemic disease grade penalty check
“If a patient is clinically a Hunt and Hess grade 5 but also has chronic pulmonary disease, does the systemic disease adjustment change their final grade? Run the Hunt and Hess 1968 calculation with grade 5 and serious systemic disease set to true.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/hunt_hess?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the deterministic, citeable Hunt and Hess 1968 SAH surgical-risk grade — specifically the original 1968 classification with the systemic-disease penalty rule — and not the WFNS scale or the Hunt-Kosnik 1974 variant. Ideal for clinical documentation, registry entry, or automated neurosurgery triage workflows where the exact published grading algorithm and citation are required.
Side effects
- Grade integer outside 1–5 range returns a validation error
- Missing required query parameters (grade or serious_systemic_disease) returns a 400-level error
- Payment not included or insufficient triggers x402 payment-required response
- Boolean serious_systemic_disease not parseable returns schema error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/hunt_hess",
"count": 2,
"items": [
{
"grade": 2,
"score": 2,
"formula": "hunt_hess",
"citation": {
"id": "hunt-hess-1968",
"doi": "10.3171/jns.1968.28.1.0014",
"title": "Surgical risk as related to time of intervention in the repair of intracranial aneurysms",
"source": "J Neurosurg. 1968;28(1):14-20",
"authors": "Hunt WE, Hess RM"
},
"max_score": 5,
"components": [
{
"factor": "assigned_grade",
"points": 2,
"present": true
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"description": "Moderate to severe headache, nuchal rigidity, no neurologic deficit other than cranial nerve palsy",
"input_grade": 2,
"formula_expression": "assigned_grade = min(5, grade + 1) if serious_systemic_disease, else grade; Hunt and Hess 1968 grades 1-5",
"serious_systemic_disease": false
},
{
"grade": 2,
"score": 2,
"formula": "hunt_hess",
"citation": {
"id": "hunt-hess-1968",
"doi": "10.3171/jns.1968.28.1.0014",
"title": "Surgical risk as related to time of intervention in the repair of intracranial aneurysms",
"source": "J Neurosurg. 1968;28(1):14-20",
"authors": "Hunt WE, Hess RM"
},
"max_score": 5,
"components": [
{
"factor": "assigned_grade",
"points": 2,
"present": true
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"description": "Moderate to severe headache, nuchal rigidity, no neurologic deficit other than cranial nerve palsy",
"input_grade": 2,
"formula_expression": "assigned_grade = min(5, grade + 1) if serious_systemic_disease, else grade; Hunt and Hess 1968 grades 1-5",
"serious_systemic_disease": false
}
]
}
}Tags
x402
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