DeMaria 2007 obesity surgery mortality risk score (OS-MRS)
DeMaria 2007 obesity surgery mortality risk score (OS-MRS): five caller-assigned flags (BMI ≥50 kg/m², male, hypertension, known PE risk, age ≥45), 1 point each, max 5. Class A 0–1, B 2–3, C 4–5. Deterministic published score with citation; not a surgical clearance and not a mortality percentage. magent does not weigh the patient or measure age.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
269 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/os_mrs
| 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 | $0.007 | 269 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age_ge_45": false,
"bmi_ge_50": false,
"hypertension": false,
"male": false,
"pe_risk_factors": false
},
{
"age_ge_45": false,
"bmi_ge_50": false,
"hypertension": false,
"male": false,
"pe_risk_factors": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age_ge_45": {
"description": "Age \u226545 years (DeMaria 2007). true or false as assigned by the caller. magent does not measure age.",
"type": "boolean"
},
"bmi_ge_50": {
"description": "BMI \u226550 kg/m\u00b2 (DeMaria 2007). true or false as assigned by the caller. magent does not weigh the patient or compute BMI.",
"type": "boolean"
},
"hypertension": {
"description": "Hypertension (DeMaria 2007). true or false as assigned by the caller. magent does not measure blood pressure.",
"type": "boolean"
},
"male": {
"description": "Male sex (DeMaria 2007). true or false as assigned by the caller. magent does not examine the patient.",
"type": "boolean"
},
"pe_risk_factors": {
"description": "Known PE risk: previous thromboembolism, preoperative vena cava filter, hypoventilation, or pulmonary hypertension (DeMaria 2007). true or false as assigned by the caller.",
"type": "boolean"
}
},
"required": [
"bmi_ge_50",
"male",
"hypertension",
"pe_risk_factors",
"age_ge_45"
],
"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"
}