Palchak 2003
Palchak 2003. High risk after blunt head trauma in children 0-17 if any applicable predictor: abnormal mental status, clinical signs of skull fracture, history of vomiting, scalp hematoma (only if age <=2), or headache. Else low risk. ct_not_low_risk iff high. Scalp hematoma is parsed at all ages but scores only when age is 0, 1, or 2. Not PECARN, CATCH, CHALICE, Canadian CT Head, or NEXUS. magent does not examine the child or order CT. Not a diagnosis or medical device.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
292 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/palchak
| 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 | $0.007 | 292 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"abnormal_mental_status": false,
"age": 10,
"clinical_signs_skull_fracture": false,
"headache": false,
"history_of_vomiting": false,
"scalp_hematoma": false
},
{
"abnormal_mental_status": false,
"age": 10,
"clinical_signs_skull_fracture": false,
"headache": false,
"history_of_vomiting": false,
"scalp_hematoma": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"abnormal_mental_status": {
"description": "Abnormal mental status as assigned by the caller. true or false. High-risk at all ages 0-17. magent does not examine the child or assign GCS.",
"type": "boolean"
},
"age": {
"description": "Age in years (integer 0-17). Scalp hematoma is a high-risk predictor only when age is 0, 1, or 2; age 3-17 parse scalp_hematoma but do not score it. Age 18 is rejected.",
"type": "integer"
},
"clinical_signs_skull_fracture": {
"description": "Clinical signs of skull fracture as assigned by the caller. true or false. High-risk at all ages 0-17. magent does not examine the child or read a radiograph.",
"type": "boolean"
},
"headache": {
"description": "Headache as assigned by the caller. true or false. High-risk at all ages 0-17 (Palchak 2003 listed headache as a predictor). magent does not examine the child.",
"type": "boolean"
},
"history_of_vomiting": {
"description": "History of vomiting as assigned by the caller. true or false. High-risk at all ages 0-17.",
"type": "boolean"
},
"scalp_hematoma": {
"description": "Scalp hematoma as assigned by the caller. true or false. High-risk only when age is 0, 1, or 2; parsed but not scored when age >= 3. magent does not examine the scalp.",
"type": "boolean"
}
},
"required": [
"age",
"abnormal_mental_status",
"clinical_signs_skull_fracture",
"history_of_vomiting",
"scalp_hematoma",
"headache"
],
"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"
}