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ORBIT 2015 Atrial Fibrillation Bleeding Risk Score
x402
ORBIT 2015 Atrial Fibrillation Bleeding Risk Score 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).
Computes the ORBIT 2015 bleeding risk score for atrial fibrillation patients from five caller-supplied clinical flags
Price / call$0.005
Success—
StatusUnknown
How this service works
ORBIT 2015 (O'Brien) AF bleeding score: age >=75 scores 1; anemia caller flag 2; bleeding history 2; insufficient kidney (paper eGFR <60) caller flag 1; antiplatelet 1. Max 7. Score 0-2 low, 3 intermediate, >=4 high. Not a diagnosis. Not HAS-BLED. magent does not take hemoglobin or compute eGFR.
Output
Returns the numeric ORBIT score (0–7) and the corresponding risk category: 0–2 = low, 3 = intermediate, ≥4 = high. Does not include a diagnosis or treatment recommendation. Does not compute eGFR or interpret hemoglobin — those flags must be pre-determined by the caller.
Example use cases
Pre-anticoagulation bleeding risk check
“Before we start this 80-year-old AFib patient on anticoagulation, compute their ORBIT 2015 bleeding score — they have anemia and insufficient kidney function (eGFR <60), no prior bleeding history, and are not on antiplatelets.”
Clinical note documentation support
“I need the ORBIT score for a 72-year-old with a history of GI bleeding who is on antiplatelet therapy, has no anemia, and normal kidney function — is this patient low, intermediate, or high risk?”
Population risk stratification workflow
“For this 75-year-old AFib patient with anemia, antiplatelet use, and prior bleeding but adequate kidney function, what does their ORBIT 2015 score come out to and what risk tier is that?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/orbitWhen to prefer
Use this endpoint when you need a quick, validated ORBIT 2015 bleeding risk score for an AFib patient and have already determined the five clinical flags externally. Prefer this over HAS-BLED calculators when the clinical context specifically calls for the O'Brien 2015 ORBIT model. This endpoint does not compute eGFR or interpret hemoglobin, so it is appropriate when those determinations have already been made upstream in your workflow.
Side effects
- Missing required query parameters (age, anemia, bleeding_history, insufficient_kidney, antiplatelet) returns a 400 error
- Age outside the 18–120 integer range may be rejected or produce unexpected scoring
- Boolean fields passed as strings instead of true/false may cause validation errors
- Payment failure via x402 protocol returns 402 Payment Required
- Caller conflating eGFR computation with the insufficient_kidney flag — this endpoint does not compute eGFR
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/orbit",
"count": 2,
"items": [
{
"score": 0,
"formula": "orbit",
"citation": {
"id": "obrien-2015",
"doi": "10.1093/eurheartj/ehv182",
"title": "The ORBIT bleeding score: a simple bedside score to assess bleeding risk in atrial fibrillation",
"source": "Eur Heart J. 2015;36(46):3258-3264",
"authors": "O'Brien EC, Simon DN, Thomas LE, et al."
},
"age_years": 70,
"max_score": 7,
"components": [
{
"value": 70,
"factor": "age_ge_75",
"points": 0,
"present": false
},
{
"factor": "anemia",
"points": 0,
"present": false
},
{
"factor": "bleeding_history",
"points": 0,
"present": false
},
{
"factor": "insufficient_kidney",
"points": 0,
"present": false
},
{
"factor": "antiplatelet",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"orbit_risk": "low",
"formula_expression": "ORBIT = age_ge_75 (1) + anemia (2) + bleeding_history (2) + insufficient_kidney (1) + antiplatelet (1); max 7; 0-2 low, 3 intermediate, >=4 high"
},
{
"score": 0,
"formula": "orbit",
"citation": {
"id": "obrien-2015",
"doi": "10.1093/eurheartj/ehv182",
"title": "The ORBIT bleeding score: a simple bedside score to assess bleeding risk in atrial fibrillation",
"source": "Eur Heart J. 2015;36(46):3258-3264",
"authors": "O'Brien EC, Simon DN, Thomas LE, et al."
},
"age_years": 70,
"max_score": 7,
"components": [
{
"value": 70,
"factor": "age_ge_75",
"points": 0,
"present": false
},
{
"factor": "anemia",
"points": 0,
"present": false
},
{
"factor": "bleeding_history",
"points": 0,
"present": false
},
{
"factor": "insufficient_kidney",
"points": 0,
"present": false
},
{
"factor": "antiplatelet",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"orbit_risk": "low",
"formula_expression": "ORBIT = age_ge_75 (1) + anemia (2) + bleeding_history (2) + insufficient_kidney (1) + antiplatelet (1); max 7; 0-2 low, 3 intermediate, >=4 high"
}
]
}
}Tags
x402
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