Kattah 2009 three-step HINTS (Head-Impulse, Nystagmus, Test-of-Skew) for patient
Kattah 2009 three-step HINTS (Head-Impulse, Nystagmus, Test-of-Skew) for patients already in acute vestibular syndrome (AVS). Three caller-assigned flags: head_impulse_normal, direction_changing_nystagmus, and skew_deviation. dangerous is true if any flag is true (INFARCT: Impulse Normal, Fast-phase Alternating, Refixation on Cover Test). benign iff none. Not HINTS-plus (hearing). Not a stroke diagnosis or a substitute for neuroimaging. magent does not examine the patient.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/hints
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 285 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"direction_changing_nystagmus": false,
"head_impulse_normal": false,
"skew_deviation": false
},
{
"direction_changing_nystagmus": false,
"head_impulse_normal": false,
"skew_deviation": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"direction_changing_nystagmus": {
"description": "Direction-changing nystagmus in eccentric gaze as assigned by the caller (Kattah 2009). true is a dangerous central sign (INFARCT: Fast-phase Alternating). magent does not examine the patient.",
"type": "boolean"
},
"head_impulse_normal": {
"description": "Normal horizontal head-impulse test (h-HIT) as assigned by the caller (Kattah 2009). true is a dangerous central sign (INFARCT: Impulse Normal). magent does not examine the patient.",
"type": "boolean"
},
"skew_deviation": {
"description": "Skew deviation / vertical ocular misalignment on cover test as assigned by the caller (Kattah 2009). true is a dangerous central sign (INFARCT: Refixation on Cover Test). magent does not examine the patient.",
"type": "boolean"
}
},
"required": [
"head_impulse_normal",
"direction_changing_nystagmus",
"skew_deviation"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}