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magent EREFS Calculator (Hirano 2013 Modified)
x402
magent EREFS Calculator (Hirano 2013 Modified) 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 Hirano 2013 modified EREFS endoscopic score for eosinophilic esophagitis by summing five caller-assigned endoscopic findings (edema, rings, exudates, furrows, stricture) into a total score of 0–8.
Price / call$0.005
Success—
StatusUnknown
How this service works
Hirano 2013 modified EREFS: caller-assigned edema (absent 0, present 1), rings (none 0, mild 1, moderate 2, severe 3), exudates (none 0, mild_lt_10pct 1, severe_gt_10pct 2), furrows (absent 0, present 1; original 0-2 collapsed), stricture (absent 0, present 1). magent sums only (max 8; not later 0-9). No activity bands, inflammatory/fibrostenotic subscores, crepe-paper, or narrow-calibre. magent does not perform endoscopy. Not a diagnosis.
Output
Returns the Hirano 2013 modified EREFS total score (integer 0–8) derived by summing the five caller-assigned component grades: edema (0–1), rings (0–3), exudates (0–2), furrows (0–1), and stricture (0–1). No activity bands, inflammatory/fibrostenotic subscores, or extended 0–9 features are included.
Example use cases
Documenting EoE follow-up endoscopy
“I just reviewed the endoscopy report for my EoE patient — edema is present, rings are mild, no exudates, furrows are present, and there's no stricture. Can you give me the Hirano modified EREFS total score?”
Baseline EREFS before treatment
“Before starting swallowed steroid therapy, I need to record a baseline EREFS. Endoscopy showed edema present, severe rings, severe exudates over 10% surface area, furrows present, stricture absent. What's the modified EREFS score?”
Comparing treatment response scores
“Post-treatment endoscopy looks much better — edema absent, rings none, exudates none, furrows absent, stricture absent. Calculate the Hirano 2013 modified EREFS so I can compare it to the pre-treatment score.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/erefsWhen to prefer
Use this endpoint when you need to programmatically compute the Hirano 2013 modified EREFS score (max 8) from caller-supplied endoscopic findings for eosinophilic esophagitis. Prefer it over manual calculation to ensure consistent application of the modified scale (collapsed furrows 0–1, not the later 0–9 expansion). Do not use for diagnosis, endoscopy performance, or if you need the later extended 0–9 EREFS variant with separate inflammatory/fibrostenotic subscores.
Side effects
- Missing required query parameter (edema, rings, exudates, furrows, or stricture) returns a 400 error
- Invalid enum value for any parameter (e.g., a rings value not in none/mild/moderate/severe) returns a 400 error
- Payment not provided or insufficient USDC via x402 protocol returns a 402 Payment Required
- Network timeout or server unavailability returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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