4AT (Bellelli 2014)
4AT (Bellelli 2014): alertness (normal 0, abnormal 4) + AMT4 mistake count 0/1/2 + attention 0/1/2 + acute change or fluctuation (false 0, true 4). Max 12. Band 0 unlikely, 1–3 possible cognitive impairment, ≥4 possible delirium. Not a delirium or dementia diagnosis. magent does not examine the patient. AMT4 is the caller-assigned mistake count only; this API does not collect age, date of birth, place, or year.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
291 msmedian answer time
$0.005listed price per call
$0.007price it asked us
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/4at
| 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 | $0.007 | 291 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"acute_change": false,
"alertness": "normal",
"amt4": 0,
"attention": 0
},
{
"acute_change": false,
"alertness": "normal",
"amt4": 0,
"attention": 0
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"acute_change": {
"description": "Bellelli 2014 acute change or fluctuating course as assigned by the caller. true scores 4. magent does not take a collateral history.",
"type": "boolean"
},
"alertness": {
"description": "Bellelli 2014 4AT item 1 as assigned by the caller. normal scores 0; abnormal scores 4. magent does not observe consciousness.",
"enum": [
"normal",
"abnormal"
],
"type": "string"
},
"amt4": {
"description": "Caller-assigned AMT4 mistake count only (Bellelli 2014): 0 mistakes \u2192 0; 1 mistake \u2192 1; \u22652 mistakes or untestable \u2192 2. Integer 0, 1, or 2. This API does not collect age, date of birth, place, or year.",
"enum": [
0,
1,
2
],
"type": "integer"
},
"attention": {
"description": "Bellelli 2014 months-backwards item as assigned by the caller. 0: achieves \u22657 months. 1: starts but <7 months or refuses. 2: untestable. Integer 0, 1, or 2. magent does not run months backwards.",
"enum": [
0,
1,
2
],
"type": "integer"
}
},
"required": [
"alertness",
"amt4",
"attention",
"acute_change"
],
"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"
}