magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Inferenceofflineeip155:8453Exactvia cdp
MehranCinKidneyPciCalculator
Calls · 30d
3→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 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.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-31 13:00Z
—
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/mehran",
"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/mehran",
"tags": [
"mehran",
"cin",
"kidney",
"pci",
"calculator"
],
"mimeType": "application/json",
"description": "Mehran 2004 contrast-induced nephropathy risk score after PCI (eGFR model B). Points from hypotension, IABP, CHF, age >75, anemia, diabetes, contrast volume (1 per 100 mL), and caller eGFR. Returns integer score (max 41), risk group (low ≤5 through very_high ≥16), and development-set CIN percent. Not a CKD diagnosis; magent does not measure contrast or compute eGFR.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 60,
"chf": false,
"iabp": false,
"anemia": false,
"diabetes": false,
"contrast_ml": 100,
"egfr_ml_min": 90,
"hypotension": false
}
},
"output": {
"type": "json",
"example": {
"chf": false,
"iabp": false,
"score": 1,
"anemia": false,
"formula": "mehran",
"citation": {
"id": "mehran-2004",
"doi": "10.1016/j.jacc.2004.06.068",
"pmid": "15464318",
"title": "A simple risk score for prediction of contrast-induced nephropathy after percutaneous coronary intervention: development and initial validation",
"source": "J Am Coll Cardiol. 2004;44(7):1393-1399",
"authors": "Mehran R, Aymong ED, Nikolsky E, et al."
},
"diabetes": false,
"age_years": 60,
"max_score": 41,
"components": [
{
"factor": "hypotension",
"points": 0,
"present": false
},
{
"factor": "iabp",
"points": 0,
"present": false
},
{
"factor": "chf",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age_gt_75",
"points": 0,
"present": false
},
{
"factor": "anemia",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "contrast_ml",
"points": 1,
"present": true
},
{
"value": 90,
"factor": "egfr_ml_min",
"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.",
"risk_group": "low",
"cin_percent": 7.5,
"contrast_ml": 100,
"egfr_ml_min": 90,
"hypotension": false,
"formula_expression": "Mehran 2004 model B = hypotension(5) + iabp(5) + chf(5) + age>75(4) + anemia(3) + diabetes(3) + floor(contrast_ml/100) + eGFR (>=60: 0, 40 to <60: 2, 20 to <40: 4, <20: 6); max 41 with contrast_ml 10-1000; risk_group low <=5, moderate 6-10, high 11-15, very_high >=16; development CIN 7.5% / 14.0% / 26.1% / 57.3%"
}
},
"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": [
"age",
"hypotension",
"iabp",
"chf",
"anemia",
"diabetes",
"contrast_ml",
"egfr_ml_min"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Age >75 scores 4 (Mehran 2004 Table 3 model B). Age 75 scores 0."
},
"chf": {
"type": "boolean",
"description": "CHF as assigned by the caller: NYHA III/IV and/or pulmonary edema (Mehran 2004). true scores 5. true or false. magent does not examine the patient."
},
"iabp": {
"type": "boolean",
"description": "Intra-aortic balloon pump use as assigned by the caller (Mehran 2004 Table 3). true scores 5. Independent of the hypotension flag. true or false."
},
"anemia": {
"type": "boolean",
"description": "Anemia as assigned by the caller using WHO hematocrit <39% (men) or <36% (women) (Mehran 2004). true scores 3. Flag only; do not send a hematocrit number. magent does not assay hematocrit."
},
"diabetes": {
"type": "boolean",
"description": "Diabetes mellitus as assigned by the caller (Mehran 2004 Table 3). true scores 3. true or false."
},
"contrast_ml": {
"type": "integer",
"description": "Contrast volume in mL (integer 10-1000). Scores 1 per 100 mL: floor(contrast_ml/100) (Mehran 2004). 100 scores 1; 199 scores 1; 200 scores 2. magent does not measure contrast."
},
"egfr_ml_min": {
"type": "number",
"description": "Caller-assigned eGFR in mL/min/1.73m² (5-150). Mehran 2004 Table 3 model B: ≥60 scores 0; 40 to <60 scores 2; 20 to <40 scores 4; <20 scores 6. magent does not compute eGFR and does not use race-based MDRD. Do not send serum creatinine; creatinine >1.5 is the alternate model A and would double-count."
},
"hypotension": {
"type": "boolean",
"description": "Hypotension as assigned by the caller: SBP <80 mm Hg for ≥1 h requiring inotropes or IABP within 24 h (Mehran 2004). true scores 5. true or false. magent does not measure blood pressure."
}
}
}
},
"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/mehran",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 60,
"chf": false,
"iabp": false,
"anemia": false,
"diabetes": false,
"contrast_ml": 100,
"egfr_ml_min": 90,
"hypotension": false
},
{
"age": 60,
"chf": false,
"iabp": false,
"anemia": false,
"diabetes": false,
"contrast_ml": 100,
"egfr_ml_min": 90,
"hypotension": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/mehran",
"count": 2,
"items": [
{
"chf": false,
"iabp": false,
"score": 1,
"anemia": false,
"formula": "mehran",
"citation": {
"id": "mehran-2004",
"doi": "10.1016/j.jacc.2004.06.068",
"pmid": "15464318",
"title": "A simple risk score for prediction of contrast-induced nephropathy after percutaneous coronary intervention: development and initial validation",
"source": "J Am Coll Cardiol. 2004;44(7):1393-1399",
"authors": "Mehran R, Aymong ED, Nikolsky E, et al."
},
"diabetes": false,
"age_years": 60,
"max_score": 41,
"components": [
{
"factor": "hypotension",
"points": 0,
"present": false
},
{
"factor": "iabp",
"points": 0,
"present": false
},
{
"factor": "chf",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age_gt_75",
"points": 0,
"present": false
},
{
"factor": "anemia",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "contrast_ml",
"points": 1,
"present": true
},
{
"value": 90,
"factor": "egfr_ml_min",
"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.",
"risk_group": "low",
"cin_percent": 7.5,
"contrast_ml": 100,
"egfr_ml_min": 90,
"hypotension": false,
"formula_expression": "Mehran 2004 model B = hypotension(5) + iabp(5) + chf(5) + age>75(4) + anemia(3) + diabetes(3) + floor(contrast_ml/100) + eGFR (>=60: 0, 40 to <60: 2, 20 to <40: 4, <20: 6); max 41 with contrast_ml 10-1000; risk_group low <=5, moderate 6-10, high 11-15, very_high >=16; development CIN 7.5% / 14.0% / 26.1% / 57.3%"
},
{
"chf": false,
"iabp": false,
"score": 1,
"anemia": false,
"formula": "mehran",
"citation": {
"id": "mehran-2004",
"doi": "10.1016/j.jacc.2004.06.068",
"pmid": "15464318",
"title": "A simple risk score for prediction of contrast-induced nephropathy after percutaneous coronary intervention: development and initial validation",
"source": "J Am Coll Cardiol. 2004;44(7):1393-1399",
"authors": "Mehran R, Aymong ED, Nikolsky E, et al."
},
"diabetes": false,
"age_years": 60,
"max_score": 41,
"components": [
{
"factor": "hypotension",
"points": 0,
"present": false
},
{
"factor": "iabp",
"points": 0,
"present": false
},
{
"factor": "chf",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age_gt_75",
"points": 0,
"present": false
},
{
"factor": "anemia",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "contrast_ml",
"points": 1,
"present": true
},
{
"value": 90,
"factor": "egfr_ml_min",
"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.",
"risk_group": "low",
"cin_percent": 7.5,
"contrast_ml": 100,
"egfr_ml_min": 90,
"hypotension": false,
"formula_expression": "Mehran 2004 model B = hypotension(5) + iabp(5) + chf(5) + age>75(4) + anemia(3) + diabetes(3) + floor(contrast_ml/100) + eGFR (>=60: 0, 40 to <60: 2, 20 to <40: 4, <20: 6); max 41 with contrast_ml 10-1000; risk_group low <=5, moderate 6-10, high 11-15, very_high >=16; development CIN 7.5% / 14.0% / 26.1% / 57.3%"
}
]
}
},
"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": [
"age",
"hypotension",
"iabp",
"chf",
"anemia",
"diabetes",
"contrast_ml",
"egfr_ml_min"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Age >75 scores 4 (Mehran 2004 Table 3 model B). Age 75 scores 0."
},
"chf": {
"type": "boolean",
"description": "CHF as assigned by the caller: NYHA III/IV and/or pulmonary edema (Mehran 2004). true scores 5. true or false. magent does not examine the patient."
},
"iabp": {
"type": "boolean",
"description": "Intra-aortic balloon pump use as assigned by the caller (Mehran 2004 Table 3). true scores 5. Independent of the hypotension flag. true or false."
},
"anemia": {
"type": "boolean",
"description": "Anemia as assigned by the caller using WHO hematocrit <39% (men) or <36% (women) (Mehran 2004). true scores 3. Flag only; do not send a hematocrit number. magent does not assay hematocrit."
},
"diabetes": {
"type": "boolean",
"description": "Diabetes mellitus as assigned by the caller (Mehran 2004 Table 3). true scores 3. true or false."
},
"contrast_ml": {
"type": "integer",
"description": "Contrast volume in mL (integer 10-1000). Scores 1 per 100 mL: floor(contrast_ml/100) (Mehran 2004). 100 scores 1; 199 scores 1; 200 scores 2. magent does not measure contrast."
},
"egfr_ml_min": {
"type": "number",
"description": "Caller-assigned eGFR in mL/min/1.73m² (5-150). Mehran 2004 Table 3 model B: ≥60 scores 0; 40 to <60 scores 2; 20 to <40 scores 4; <20 scores 6. magent does not compute eGFR and does not use race-based MDRD. Do not send serum creatinine; creatinine >1.5 is the alternate model A and would double-count."
},
"hypotension": {
"type": "boolean",
"description": "Hypotension as assigned by the caller: SBP <80 mm Hg for ≥1 h requiring inotropes or IABP within 24 h (Mehran 2004). true scores 5. true or false. magent does not measure blood pressure."
}
}
},
"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
- 2026-08-31 13:00Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 22:16Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 0
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. 14 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/mehran, 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.