magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
TradingLiveeip155:8453Exactvia cdp
Gupta-prfPreoperativeRespiratory-failureEmergencyCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far.
$13.75
Verified settled volume
2,750 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-01 09:18Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x836Be278f1739fB4308091cD1852F7971Bc19Ee2The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/gupta_prf",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
],
"resource": {
"url": "https://api.magentlab.com/api/calc/gupta_prf",
"tags": [
"gupta-prf",
"preoperative",
"respiratory-failure",
"emergency",
"calculator"
],
"mimeType": "application/json",
"description": "Gupta 2011 Chest logistic probability of postoperative respiratory failure (mechanical ventilation >48 h after surgery or unplanned intubation within 30 days) from ASA class, functional status, preoperative sepsis, emergency case, and surgery type (hernia reference). Returns logit and estimated_probability_percent. Not a medical device, not a diagnosis, not a ventilator order, and not ARISCAT. Gupta 2011 publishes no low/high cutoff.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"sepsis": "none",
"surgery": "hernia",
"asa_class": 2,
"emergency": false,
"functional_status": "independent"
}
},
"output": {
"type": "json",
"example": {
"logit": -5.0984,
"sepsis": "none",
"formula": "gupta_prf",
"surgery": "hernia",
"citation": {
"id": "gupta-2011-prf",
"doi": "10.1378/chest.11-0466",
"pmid": "21757571",
"title": "Development and validation of a risk calculator predicting postoperative respiratory failure",
"source": "Chest. 2011;140(5):1207-1215",
"authors": "Gupta H, Gupta PK, Fang X, Miller WJ, Cemaj S, Forse RA, Morrow LE"
},
"asa_class": 2,
"emergency": 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.",
"functional_status": "independent",
"formula_expression": "L = -1.7397 + functional_status + asa_class + sepsis + emergency + surgery (Gupta 2011 Chest logistic table); independent 0, partially_dependent 0.7678, totally_dependent 1.4046; ASA1 -3.5265, ASA2 -2.0008, ASA3 -0.6201, ASA4 0.2441, ASA5 0; sepsis none -0.7840, sirs 0, sepsis 0.2752, septic_shock 0.9035; elective -0.5739, emergency 0; hernia 0, anorectal -1.3530, aortic 1.0781, bariatric -1.0112, brain 0.7336, breast -2.6462, cardiac 0.2744, ent 0.1060, foregut_hpb 0.9694, gbaas -0.5668, intestinal 0.5737, neck -0.5271, obstetric_gynecologic -1.2431, orthopedic -0.8577, other_abdomen 0.2416, peripheral_vascular -0.2389, skin -0.3206, spine -0.5220, thoracic 0.6715, vein -2.0080, urology 0.3093; estimated_probability_percent = 100 * exp(L) / (1 + exp(L))",
"estimated_probability_percent": 0.61
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"queryParams": {
"type": "object",
"required": [
"functional_status",
"asa_class",
"sepsis",
"emergency",
"surgery"
],
"properties": {
"sepsis": {
"enum": [
"none",
"sirs",
"sepsis",
"septic_shock"
],
"type": "string",
"description": "Gupta 2011 Chest preoperative sepsis category as assigned by the caller: none (-0.7840), sirs (reference, 0), sepsis (+0.2752), or septic_shock (+0.9035). magent does not diagnose sepsis."
},
"surgery": {
"enum": [
"hernia",
"anorectal",
"aortic",
"bariatric",
"brain",
"breast",
"cardiac",
"ent",
"foregut_hpb",
"gbaas",
"intestinal",
"neck",
"obstetric_gynecologic",
"orthopedic",
"other_abdomen",
"peripheral_vascular",
"skin",
"spine",
"thoracic",
"vein",
"urology"
],
"type": "string",
"description": "Gupta 2011 Chest procedure category as assigned by the caller. hernia (ventral, inguinal, or femoral) is the reference (0). gbaas is gallbladder, appendix, adrenal, or spleen. thoracic is non-esophageal thoracic. orthopedic is orthopedic or non-vascular extremity. ent excludes thyroid/parathyroid (neck). magent does not classify a CPT code."
},
"asa_class": {
"type": "integer",
"description": "ASA physical status 1-5 (Gupta 2011 Chest logistic table; class 5 is the reference). class 1 -3.5265, class 2 -2.0008, class 3 -0.6201, class 4 +0.2441, class 5 adds 0. Caller-assigned integer."
},
"emergency": {
"type": "boolean",
"description": "Gupta 2011 Chest emergency case as assigned by the caller: true (reference, 0) or false (elective, -0.5739)."
},
"functional_status": {
"enum": [
"independent",
"partially_dependent",
"totally_dependent"
],
"type": "string",
"description": "Gupta 2011 Chest functional status as assigned by the caller: independent (reference, 0), partially_dependent (+0.7678), or totally_dependent (+1.4046). magent does not examine the patient."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x836B…19Ee2. The signed payment is good for 10 minutes.
- Paid to
- 0x836B…19Ee2
- USD Coin contract
- 0x8335…02913
- Payment window
- 10 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/gupta_prf",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"sepsis": "none",
"surgery": "hernia",
"asa_class": 2,
"emergency": false,
"functional_status": "independent"
},
{
"sepsis": "none",
"surgery": "hernia",
"asa_class": 2,
"emergency": false,
"functional_status": "independent"
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/gupta_prf",
"count": 2,
"items": [
{
"logit": -5.0984,
"sepsis": "none",
"formula": "gupta_prf",
"surgery": "hernia",
"citation": {
"id": "gupta-2011-prf",
"doi": "10.1378/chest.11-0466",
"pmid": "21757571",
"title": "Development and validation of a risk calculator predicting postoperative respiratory failure",
"source": "Chest. 2011;140(5):1207-1215",
"authors": "Gupta H, Gupta PK, Fang X, Miller WJ, Cemaj S, Forse RA, Morrow LE"
},
"asa_class": 2,
"emergency": 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.",
"functional_status": "independent",
"formula_expression": "L = -1.7397 + functional_status + asa_class + sepsis + emergency + surgery (Gupta 2011 Chest logistic table); independent 0, partially_dependent 0.7678, totally_dependent 1.4046; ASA1 -3.5265, ASA2 -2.0008, ASA3 -0.6201, ASA4 0.2441, ASA5 0; sepsis none -0.7840, sirs 0, sepsis 0.2752, septic_shock 0.9035; elective -0.5739, emergency 0; hernia 0, anorectal -1.3530, aortic 1.0781, bariatric -1.0112, brain 0.7336, breast -2.6462, cardiac 0.2744, ent 0.1060, foregut_hpb 0.9694, gbaas -0.5668, intestinal 0.5737, neck -0.5271, obstetric_gynecologic -1.2431, orthopedic -0.8577, other_abdomen 0.2416, peripheral_vascular -0.2389, skin -0.3206, spine -0.5220, thoracic 0.6715, vein -2.0080, urology 0.3093; estimated_probability_percent = 100 * exp(L) / (1 + exp(L))",
"estimated_probability_percent": 0.61
},
{
"logit": -5.0984,
"sepsis": "none",
"formula": "gupta_prf",
"surgery": "hernia",
"citation": {
"id": "gupta-2011-prf",
"doi": "10.1378/chest.11-0466",
"pmid": "21757571",
"title": "Development and validation of a risk calculator predicting postoperative respiratory failure",
"source": "Chest. 2011;140(5):1207-1215",
"authors": "Gupta H, Gupta PK, Fang X, Miller WJ, Cemaj S, Forse RA, Morrow LE"
},
"asa_class": 2,
"emergency": 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.",
"functional_status": "independent",
"formula_expression": "L = -1.7397 + functional_status + asa_class + sepsis + emergency + surgery (Gupta 2011 Chest logistic table); independent 0, partially_dependent 0.7678, totally_dependent 1.4046; ASA1 -3.5265, ASA2 -2.0008, ASA3 -0.6201, ASA4 0.2441, ASA5 0; sepsis none -0.7840, sirs 0, sepsis 0.2752, septic_shock 0.9035; elective -0.5739, emergency 0; hernia 0, anorectal -1.3530, aortic 1.0781, bariatric -1.0112, brain 0.7336, breast -2.6462, cardiac 0.2744, ent 0.1060, foregut_hpb 0.9694, gbaas -0.5668, intestinal 0.5737, neck -0.5271, obstetric_gynecologic -1.2431, orthopedic -0.8577, other_abdomen 0.2416, peripheral_vascular -0.2389, skin -0.3206, spine -0.5220, thoracic 0.6715, vein -2.0080, urology 0.3093; estimated_probability_percent = 100 * exp(L) / (1 + exp(L))",
"estimated_probability_percent": 0.61
}
]
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"items"
],
"properties": {
"items": {
"type": "array",
"items": {
"type": "object",
"required": [
"functional_status",
"asa_class",
"sepsis",
"emergency",
"surgery"
],
"properties": {
"sepsis": {
"enum": [
"none",
"sirs",
"sepsis",
"septic_shock"
],
"type": "string",
"description": "Gupta 2011 Chest preoperative sepsis category as assigned by the caller: none (-0.7840), sirs (reference, 0), sepsis (+0.2752), or septic_shock (+0.9035). magent does not diagnose sepsis."
},
"surgery": {
"enum": [
"hernia",
"anorectal",
"aortic",
"bariatric",
"brain",
"breast",
"cardiac",
"ent",
"foregut_hpb",
"gbaas",
"intestinal",
"neck",
"obstetric_gynecologic",
"orthopedic",
"other_abdomen",
"peripheral_vascular",
"skin",
"spine",
"thoracic",
"vein",
"urology"
],
"type": "string",
"description": "Gupta 2011 Chest procedure category as assigned by the caller. hernia (ventral, inguinal, or femoral) is the reference (0). gbaas is gallbladder, appendix, adrenal, or spleen. thoracic is non-esophageal thoracic. orthopedic is orthopedic or non-vascular extremity. ent excludes thyroid/parathyroid (neck). magent does not classify a CPT code."
},
"asa_class": {
"type": "integer",
"description": "ASA physical status 1-5 (Gupta 2011 Chest logistic table; class 5 is the reference). class 1 -3.5265, class 2 -2.0008, class 3 -0.6201, class 4 +0.2441, class 5 adds 0. Caller-assigned integer."
},
"emergency": {
"type": "boolean",
"description": "Gupta 2011 Chest emergency case as assigned by the caller: true (reference, 0) or false (elective, -0.5739)."
},
"functional_status": {
"enum": [
"independent",
"partially_dependent",
"totally_dependent"
],
"type": "string",
"description": "Gupta 2011 Chest functional status as assigned by the caller: independent (reference, 0), partially_dependent (+0.7678), or totally_dependent (+1.4046). magent does not examine the patient."
}
}
},
"maxItems": 25,
"minItems": 1
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-01 09:18Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 07:15Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service magent and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=magent' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://api.magentlab.com/api/calc/gupta_prf, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.