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Prague C&M Barrett's Esophagus Classifier
x402
Prague C&M Barrett's Esophagus Classifier is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Formats caller-supplied circumferential and maximal Barrett's mucosa extents into a standardized Prague C&M notation string (e.g. C2M5).
Price / call$0.005
Success—
StatusUnknown
How this service works
Sharma 2006 Prague C and M. Caller-assigned circumferential c_cm and maximal m_cm (integers 0-20 cm above the gastroesophageal junction). Returns C{c}M{m} (for example C2M5). M must be ≥ C. C=0 is tongues only (no circumferential Barrett). Not a Barrett diagnosis; histology is required. Not Los Angeles oesophagitis grading. magent does not perform endoscopy. Not a medical device.
Output
A single Prague C&M notation string (e.g. 'C2M5') encoding the caller-supplied circumferential (C) and maximal (M) Barrett's mucosa extents. The format follows Sharma 2006 Prague consensus criteria. No diagnosis is made; histology confirmation is still required.
Example use cases
Endoscopy report documentation
“I need to record a Barrett's segment for a patient — circumferential extent is 2 cm and maximal extent is 4 cm above the GE junction. What's the Prague C&M notation I should write in the report?”
Tongues-only Barrett's encoding
“The endoscopy showed no circumferential Barrett's segment, just tongues extending 3 cm. What's the Prague classification code for that?”
Research data standardization
“I have a spreadsheet of Barrett's esophagus measurements with c_cm values of 1 and m_cm values of 5 — convert those into the Prague C&M formatted string for our database.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/pragueWhen to prefer
Use this endpoint when you need to encode Barrett's esophagus endoscopic measurements into the internationally standardized Prague C&M notation string per Sharma 2006 consensus criteria. Prefer this over manual formatting to ensure correct validation (M ≥ C constraint, 0–20 cm range). Not appropriate for Los Angeles esophagitis grading, Barrett's diagnosis, or any situation where actual endoscopy or histologic interpretation is needed.
Side effects
- m_cm less than c_cm — invalid input, M must be ≥ C
- c_cm or m_cm outside 0–20 integer range — out of bounds error
- missing required query parameters c_cm or m_cm — 400 bad request
- non-integer values for c_cm or m_cm — schema validation error
- network/payment failure (x402 payment required or insufficient funds)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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