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OS-MRS Obesity Surgery Mortality Risk Score Calculator
x402
OS-MRS Obesity Surgery Mortality Risk Score Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Computes the DeMaria 2007 Obesity Surgery Mortality Risk Score (OS-MRS) from five caller-assigned boolean flags, returning a score (0–5) and risk class (A, B, or C).
Price / call$0.005
Success—
StatusUnknown
How this service works
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.
Output
Returns the OS-MRS integer score (0–5), the corresponding risk class (A for 0–1, B for 2–3, C for 4–5), a citation to DeMaria 2007, and a disclaimer that this is not a surgical clearance and does not represent a mortality percentage.
Example use cases
Preoperative bariatric risk triage
“I have a 55-year-old female patient with a BMI of 53 and hypertension but no PE risk factors scheduled for bariatric surgery — can you calculate her OS-MRS score and tell me if she's Class A, B, or C?”
EHR workflow risk documentation
“For a male patient aged 47 with BMI 48, hypertension, and a history of DVT, compute his obesity surgery mortality risk score using DeMaria 2007 criteria so I can document the preoperative risk class.”
Teaching case risk stratification
“I'm teaching residents about bariatric risk stratification — can you show the OS-MRS score for a 44-year-old female, BMI 51, no hypertension, no PE risk factors, to illustrate a borderline Class A case?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/os_mrsWhen to prefer
Use this endpoint when you need a deterministic, validated, published clinical score for bariatric surgery mortality risk stratification per DeMaria 2007. Prefer it over manual calculation to ensure correct weighting and class boundaries. Not suitable for estimating actual mortality percentages or for surgical clearance decisions.
Side effects
- Missing required boolean flags returns a validation error
- Non-boolean values for flag parameters cause a 400 error
- Network or payment failure results in no score returned
- All flags false returns score 0, Class A (valid edge case, not an error)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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