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magent ESUS Classifier
x402
magent ESUS Classifier is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Determines whether a stroke meets Hart 2014 Embolic Stroke of Undetermined Source (ESUS) criteria based on five caller-assigned boolean flags.
Price / call$0.005
Success—
StatusUnknown
How this service works
ESUS (Hart 2014). True iff all five caller-assigned flags hold: non-lacunar infarct on CT/MRI; no ≥50% stenosis supplying the ischaemia; no major-risk cardioembolic source; no other specific cause; and Panel 3 minimum workup (brain CT/MRI, 12-lead ECG, precordial echo, ≥24 h automated rhythm monitoring (not telemetry), extra- and intracranial arterial imaging). Incomplete workup is not ESUS. Not a stroke diagnosis, not TOAST cryptogenic, not anticoagulation. magent does not read imaging.
Output
Returns a boolean ESUS field: true if all five Hart 2014 criteria are met (non-lacunar infarct, no ≥50% supplying stenosis, no major-risk cardioembolic source, no other specific cause, complete Panel 3 workup); false if any criterion is false or workup is incomplete. Does not return HTTP 400 for incomplete workup — returns esus false instead.
Example use cases
Post-stroke ESUS eligibility check
“My patient had an ischemic stroke — CT confirmed it's non-lacunar, vascular imaging showed no stenosis ≥50%, echo found no major cardioembolic source, no alternative etiology identified, and they've had the full workup including brain MRI, ECG, echo, 24-hour automated rhythm monitoring, and arterial imaging of both extracranial and intracranial arteries. Does this case qualify as ESUS by Hart 2014?”
Incomplete workup ESUS ruling
“We have a stroke patient with a non-lacunar infarct on MRI, no significant stenosis, no cardioembolic source, no other specific cause — but we only did telemetry monitoring, not automated rhythm detection for 24 hours, so minimum_workup should be false. Does that disqualify this as ESUS?”
Clinical trial eligibility screening
“I'm screening a stroke patient for a clinical trial that requires ESUS. They have: non-lacunar infarct (true), no ≥50% stenosis (true), no major-risk cardioembolic source (true), no other specific cause (true), and complete Panel 3 workup with automated ≥24h monitoring (true). Please confirm ESUS status.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/esusWhen to prefer
Use this endpoint when you need a fast, deterministic Hart 2014 ESUS criterion check against five explicitly caller-assigned boolean flags. It is the right choice when all clinical assessments (imaging interpretation, cardioembolic source evaluation, workup completeness) have already been performed by a clinician and you need a reliable algorithmic gate. Do not use it to replace clinical imaging interpretation, to diagnose alternative stroke etiologies, or as a substitute for TOAST cryptogenic stroke classification.
Side effects
- Incomplete workup (minimum_workup=false) returns esus=false rather than an error — caller must ensure all five Panel 3 components are genuinely completed
- Missing required query parameters returns HTTP 400
- Caller-assigned flags that do not accurately reflect imaging/clinical findings will produce incorrect classification — magent does not independently read imaging or diagnose
- Telemetry-only cardiac monitoring passed as minimum_workup=true would be an incorrect caller assignment per Hart 2014
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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