# magent NINCDS-ADRDA Diagnostic Category Lookup

> magent NINCDS-ADRDA Diagnostic Category Lookup is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns the McKhann 1984 NINCDS-ADRDA diagnostic category token and its published defining-features description for a caller-assigned Alzheimer's classification (definite, probable, possible, or unlikely).

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/nincds_adrda
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/magent-nincds-adrda-diagnostic-category-lookup-2443b33a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IaDbX0yadhoxh_OY0Q5ZG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability magent-nincds-adrda-diagnostic-category-lookup-2443b33a
```

Example prompt: Look up the McKhann 1984 NINCDS-ADRDA published defining-features description for the 'probable' diagnostic category and return the token and criteria text.

## When to prefer this

Use this endpoint when an agent needs to retrieve the exact published McKhann 1984 NINCDS-ADRDA defining-features text for a caller-assigned diagnostic category token. Prefer this over general medical knowledge retrieval when authoritative, structured criteria text is required for documentation, research labeling validation, or educational purposes. Do not use when NIA-AA 2011/2018 or DSM criteria are needed, or when an actual diagnostic evaluation of a patient is required.

## Known failure modes

- Invalid or unrecognized category token (not one of definite/probable/possible/unlikely) results in an error
- NIA-AA, DSM, or 'probable AD' tokens rejected per schema constraints
- Missing required 'category' query parameter returns a validation error
- Payment not fulfilled (x402 payment required) blocks the response

## How this service works

McKhann 1984 NINCDS-ADRDA diagnostic category as assigned by the caller (definite, probable, possible, or unlikely). Returns the token and the published defining-features description. magent does not examine the patient. Not NIA-AA 2011/2018. Not DSM. Not an Alzheimer's diagnosis. Not a medical device.

## Output

Returns the NINCDS-ADRDA diagnostic category token (definite, probable, possible, or unlikely) along with the published McKhann 1984 defining-features description for that category. Does not perform diagnosis, does not examine patients, and does not apply NIA-AA 2011/2018 or DSM criteria.

## Request schema (JSON Schema)

```json
{
 "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": [
      "category"
     ],
     "properties": {
      "category": {
       "type": "string",
       "description": "McKhann 1984 NINCDS-ADRDA diagnostic category as assigned by the caller (definite: clinical criteria for probable Alzheimer's disease and histopathologic confirmation; probable: dementia, deficits in two or more areas of cognition, progressive worsening, no disturbance of consciousness, onset between 40 and 90, absence of other diseases that could account for the deficits; possible: dementia syndrome with atypical onset, presentation, or course, or a second systemic or brain disease capable of producing dementia but not thought to be the cause; unlikely: sudden onset, early focal neurologic findings, or seizures or gait disturbance at onset). Token definite, probable, possible, or unlikely only; case-insensitive. Reject NIA-AA, DSM, and probable AD. Not NIA-AA 2011/2018. Not DSM. magent does not examine the patient."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/magent-nincds-adrda-diagnostic-category-lookup-2443b33a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.magentlab.com](https://www.zero.xyz/host/api.magentlab.com/llms.txt)