# Wisconsin Facial Fracture Criteria Calculator (Sitzman 2011)

> Wisconsin Facial Fracture Criteria Calculator (Sitzman 2011) 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).

Evaluates five caller-assigned clinical findings against the 2011 Wisconsin criteria to determine if a patient meets criteria for facial fracture workup.

## Facts

- Endpoint: GET https://api.magentlab.com/api/calc/wisconsin_criteria
- 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/wisconsin-facial-fracture-criteria-calculator-sitzman-2011-4ea6d902
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_k43oP7KeeIDjiSBq0cjQn

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 wisconsin-facial-fracture-criteria-calculator-sitzman-2011-4ea6d902
```

Example prompt: Run the Wisconsin facial fracture criteria on this patient: bony step-off present, periorbital swelling present, GCS is normal (not less than 14), no malocclusion, and no tooth absence — does the patient meet criteria?

## When to prefer this

Use this endpoint when you need to apply the Sitzman 2011 Wisconsin Criteria rule specifically, as opposed to NEXUS, PECARN head, or Canadian CT Head rules. Prefer this for adult facial trauma triage when five discrete clinical findings have already been assessed by a clinician and you need the criteria logic applied programmatically. Not appropriate for pediatric head trauma (use PECARN) or general trauma (use NEXUS).

## Known failure modes

- Missing any of the five required boolean query parameters returns an error
- Non-boolean values for any flag will cause a validation error
- Endpoint does not perform clinical examination or assign GCS — caller must pre-assign all findings
- Misclassification risk if caller assigns findings incorrectly — endpoint only applies the rule arithmetic

## How this service works

Sitzman 2011 Wisconsin Criteria. Meets criteria if any one of five caller-assigned findings is true: bony step-off or instability, periorbital swelling or contusion, GCS < 14, malocclusion, or tooth absence. All five false does not meet. Returns meets_criteria and criteria_present (0–5). Not a diagnosis, not an imaging order, and not NEXUS, PECARN head, or Canadian CT Head. magent does not examine the face or assign GCS.

## Output

Returns a JSON object with meets_criteria (boolean indicating whether any of the five findings are true) and criteria_present (integer from 0–5 counting how many findings were flagged true by the caller).

## 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": [
      "bony_stepoff_or_instability",
      "periorbital_swelling_or_contusion",
      "gcs_lt_14",
      "malocclusion",
      "tooth_absence"
     ],
     "properties": {
      "gcs_lt_14": {
       "type": "boolean",
       "description": "Glasgow Coma Scale less than 14 as assigned by the caller. true or false. magent does not take a GCS integer or assign GCS."
      },
      "malocclusion": {
       "type": "boolean",
       "description": "Malocclusion as assigned by the caller. true or false. magent does not examine occlusion."
      },
      "tooth_absence": {
       "type": "boolean",
       "description": "Tooth absence as assigned by the caller. true or false. magent does not examine the dentition."
      },
      "bony_stepoff_or_instability": {
       "type": "boolean",
       "description": "Bony step-off or instability of the facial skeleton as assigned by the caller. true or false. magent does not examine the face."
      },
      "periorbital_swelling_or_contusion": {
       "type": "boolean",
       "description": "Periorbital swelling or contusion as assigned by the caller. true or false. magent does not examine the face."
      }
     }
    }
   },
   "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/wisconsin-facial-fracture-criteria-calculator-sitzman-2011-4ea6d902/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)