# MGFA Clinical Classification Lookup (Jaretzki 2000)

> MGFA Clinical Classification Lookup (Jaretzki 2000) 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 published Jaretzki 2000 MGFA Clinical Classification description for a caller-assigned class (I, IIa, IIb, IIIa, IIIb, IVa, IVb, or V)

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/mgfa
- 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/mgfa-clinical-classification-lookup-jaretzki-2000-57612809
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P8qxfN2rOOvQ0_eDxlvli

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 mgfa-clinical-classification-lookup-jaretzki-2000-57612809
```

Example prompt: I need to look up the official Jaretzki 2000 MGFA Clinical Classification description for class IIb — can you retrieve the published definition from Table 1?

## When to prefer this

Use this endpoint when an AI agent or clinical workflow needs the authoritative published text of the MGFA Clinical Classification (Jaretzki 2000, Table 1) for a specific class assigned by a clinician. It is not a scoring tool (does not compute QMG, MG-ADL, or Osserman), does not examine patients, and is not a medical device — it is a reference lookup for structured documentation and decision support.

## Known failure modes

- Invalid or unrecognized mgfa_class value (e.g. lowercase 'i', numeric '1', or unparseable string) returns an error — only exact case-sensitive codes I, IIa, IIb, IIIa, IIIb, IVa, IVb, V are accepted
- Payment required (x402) if valid USDC payment header is missing
- Network timeout or server unavailability

## How this service works

Jaretzki 2000 MGFA Clinical Classification (Table 1). Caller-assigned class I, IIa, IIb, IIIa, IIIb, IVa, IVb, or V with the published description. Class V is intubation except routine postoperative management. A feeding tube without intubation is class IVb. Not QMG, not MG-ADL, not Osserman, and not an outcome measure (QMG is separate). magent does not examine the patient. Not a medical device.

## Output

Returns the official Jaretzki 2000 MGFA Clinical Classification text for the specified class from Table 1, including the clinical description of that severity level (e.g. for class V: intubation for breathing except routine postoperative management; for class IVb: feeding tube without intubation).

## 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": [
      "mgfa_class"
     ],
     "properties": {
      "mgfa_class": {
       "type": "string",
       "description": "Jaretzki 2000 Table 1 MGFA Clinical Classification as assigned by the caller: I, IIa, IIb, IIIa, IIIb, IVa, IVb, or V (case-sensitive; reject i, 1, II, IIA). Class I ocular only; II mild, III moderate, IV severe generalized with a = limb/axial and b = oropharyngeal/respiratory; IVb includes feeding tube without intubation; V is intubation except routine postoperative management. 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/mgfa-clinical-classification-lookup-jaretzki-2000-57612809/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)