magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
Action-icuNstemiAcsIcuCalculator
Calls · 30d
2→ 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-31 13:03Z
—
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/action_icu",
"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/action_icu",
"tags": [
"action-icu",
"nstemi",
"acs",
"icu",
"calculator"
],
"mimeType": "application/json",
"description": "Fanaroff 2018 ACTION ICU integer score (Table 3) for initially hemodynamically stable NSTEMI. Points from age, creatinine, heart rate, systolic BP (lower SBP scores more), troponin × ULN, HF signs, ST depression, absence of prior revascularization, and chronic lung disease. Returns integer score 0–19. Not a medical device or triage order; magent does not read an ECG or assay labs.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 66,
"heart_failure": false,
"st_depression": false,
"heart_rate_bpm": 80,
"systolic_mm_hg": 150,
"troponin_x_uln": 1,
"creatinine_mg_dl": 1,
"chronic_lung_disease": false,
"prior_revascularization": true
}
},
"output": {
"type": "json",
"example": {
"score": 0,
"formula": "action_icu",
"citation": {
"id": "fanaroff-2018",
"doi": "10.1161/JAHA.118.008894",
"pmid": "29802146",
"title": "Risk Score to Predict Need for Intensive Care in Initially Hemodynamically Stable Adults With Non–ST-Segment–Elevation Myocardial Infarction",
"source": "J Am Heart Assoc. 2018;7(11):e008894",
"authors": "Fanaroff AC, Chen AY, Thomas LE, et al"
},
"age_years": 66,
"max_score": 19,
"components": [
{
"value": 66,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "creatinine_mg_dl",
"points": 0,
"present": false
},
{
"value": 80,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": 150,
"factor": "systolic_mm_hg",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "troponin_x_uln",
"points": 0,
"present": false
},
{
"factor": "heart_failure",
"points": 0,
"present": false
},
{
"factor": "st_depression",
"points": 0,
"present": false
},
{
"value": true,
"factor": "prior_revascularization",
"points": 0,
"present": false
},
{
"factor": "chronic_lung_disease",
"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.",
"heart_failure": false,
"st_depression": false,
"heart_rate_bpm": 80,
"systolic_mm_hg": 150,
"troponin_x_uln": 1,
"creatinine_mg_dl": 1,
"formula_expression": "ACTION ICU = age(<70:0, >=70:1) + creatinine_mg_dl(<1.1:0, >=1.1:1) + heart_rate_bpm(<85:0, 85-<100:1, >=100:3) + systolic_mm_hg(<125:3, 125-<145:1, >=145:0) + troponin_x_uln(<12:0, >=12:2) + heart_failure(5) + st_depression(1) + no_prior_revascularization(1) + chronic_lung_disease(2); Fanaroff 2018 Table 3; max 19; overlapping Table 3 bounds at HR 100 and SBP 145 use the >= row; score <=2 very low (<5% ICU-complication likelihood); <=5 <10%; >=12 >30%",
"chronic_lung_disease": false,
"prior_revascularization": true
}
},
"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",
"creatinine_mg_dl",
"heart_rate_bpm",
"systolic_mm_hg",
"troponin_x_uln",
"heart_failure",
"st_depression",
"prior_revascularization",
"chronic_lung_disease"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Fanaroff 2018 Table 3: younger than 70 scores 0; 70 or older scores 1."
},
"heart_failure": {
"type": "boolean",
"description": "Signs or symptoms of heart failure on first medical contact as assigned by the caller (Fanaroff 2018 Table 3). true or false. 5 points if true. magent does not examine the patient."
},
"st_depression": {
"type": "boolean",
"description": "ST-segment depression on the ECG as assigned by the caller (Fanaroff 2018 Table 3). true or false. 1 point if true. magent does not read an ECG."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats per minute (integer 30-220). Table 3 lists <85 → 0; 85–100 → 1; ≥100 → 3. The overlapping bound at 100 uses the ≥100 row (3 points)."
},
"systolic_mm_hg": {
"type": "number",
"description": "Systolic blood pressure in mm Hg (50-250). Table 3: <125 → 3; 125–145 → 1; ≥145 → 0. Lower SBP scores more. The overlapping bound at 145 uses the ≥145 row (0 points)."
},
"troponin_x_uln": {
"type": "number",
"description": "Initial troponin as a multiple of the local upper limit of normal (0-1000). Table 3: <12 → 0; ≥12 → 2. magent does not assay labs; the caller assigns the ratio."
},
"creatinine_mg_dl": {
"type": "number",
"description": "Serum creatinine in mg/dL (0.1-20), or creatinine_umol_l (9-1768) converted as mg/dL = µmol/L / 88.42. Table 3: <1.1 → 0; ≥1.1 → 1. magent does not assay labs."
},
"chronic_lung_disease": {
"type": "boolean",
"description": "Chronic lung disease as assigned by the caller (Fanaroff 2018 Table 3). true or false. 2 points if true."
},
"prior_revascularization": {
"type": "boolean",
"description": "Prior coronary revascularization as assigned by the caller (Fanaroff 2018 Table 3). true or false. Absence of prior revascularization scores 1; presence scores 0."
}
}
}
},
"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/action_icu",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 66,
"heart_failure": false,
"st_depression": false,
"heart_rate_bpm": 80,
"systolic_mm_hg": 150,
"troponin_x_uln": 1,
"creatinine_mg_dl": 1,
"chronic_lung_disease": false,
"prior_revascularization": true
},
{
"age": 66,
"heart_failure": false,
"st_depression": false,
"heart_rate_bpm": 80,
"systolic_mm_hg": 150,
"troponin_x_uln": 1,
"creatinine_mg_dl": 1,
"chronic_lung_disease": false,
"prior_revascularization": true
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/action_icu",
"count": 2,
"items": [
{
"score": 0,
"formula": "action_icu",
"citation": {
"id": "fanaroff-2018",
"doi": "10.1161/JAHA.118.008894",
"pmid": "29802146",
"title": "Risk Score to Predict Need for Intensive Care in Initially Hemodynamically Stable Adults With Non–ST-Segment–Elevation Myocardial Infarction",
"source": "J Am Heart Assoc. 2018;7(11):e008894",
"authors": "Fanaroff AC, Chen AY, Thomas LE, et al"
},
"age_years": 66,
"max_score": 19,
"components": [
{
"value": 66,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "creatinine_mg_dl",
"points": 0,
"present": false
},
{
"value": 80,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": 150,
"factor": "systolic_mm_hg",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "troponin_x_uln",
"points": 0,
"present": false
},
{
"factor": "heart_failure",
"points": 0,
"present": false
},
{
"factor": "st_depression",
"points": 0,
"present": false
},
{
"value": true,
"factor": "prior_revascularization",
"points": 0,
"present": false
},
{
"factor": "chronic_lung_disease",
"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.",
"heart_failure": false,
"st_depression": false,
"heart_rate_bpm": 80,
"systolic_mm_hg": 150,
"troponin_x_uln": 1,
"creatinine_mg_dl": 1,
"formula_expression": "ACTION ICU = age(<70:0, >=70:1) + creatinine_mg_dl(<1.1:0, >=1.1:1) + heart_rate_bpm(<85:0, 85-<100:1, >=100:3) + systolic_mm_hg(<125:3, 125-<145:1, >=145:0) + troponin_x_uln(<12:0, >=12:2) + heart_failure(5) + st_depression(1) + no_prior_revascularization(1) + chronic_lung_disease(2); Fanaroff 2018 Table 3; max 19; overlapping Table 3 bounds at HR 100 and SBP 145 use the >= row; score <=2 very low (<5% ICU-complication likelihood); <=5 <10%; >=12 >30%",
"chronic_lung_disease": false,
"prior_revascularization": true
},
{
"score": 0,
"formula": "action_icu",
"citation": {
"id": "fanaroff-2018",
"doi": "10.1161/JAHA.118.008894",
"pmid": "29802146",
"title": "Risk Score to Predict Need for Intensive Care in Initially Hemodynamically Stable Adults With Non–ST-Segment–Elevation Myocardial Infarction",
"source": "J Am Heart Assoc. 2018;7(11):e008894",
"authors": "Fanaroff AC, Chen AY, Thomas LE, et al"
},
"age_years": 66,
"max_score": 19,
"components": [
{
"value": 66,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "creatinine_mg_dl",
"points": 0,
"present": false
},
{
"value": 80,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": 150,
"factor": "systolic_mm_hg",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "troponin_x_uln",
"points": 0,
"present": false
},
{
"factor": "heart_failure",
"points": 0,
"present": false
},
{
"factor": "st_depression",
"points": 0,
"present": false
},
{
"value": true,
"factor": "prior_revascularization",
"points": 0,
"present": false
},
{
"factor": "chronic_lung_disease",
"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.",
"heart_failure": false,
"st_depression": false,
"heart_rate_bpm": 80,
"systolic_mm_hg": 150,
"troponin_x_uln": 1,
"creatinine_mg_dl": 1,
"formula_expression": "ACTION ICU = age(<70:0, >=70:1) + creatinine_mg_dl(<1.1:0, >=1.1:1) + heart_rate_bpm(<85:0, 85-<100:1, >=100:3) + systolic_mm_hg(<125:3, 125-<145:1, >=145:0) + troponin_x_uln(<12:0, >=12:2) + heart_failure(5) + st_depression(1) + no_prior_revascularization(1) + chronic_lung_disease(2); Fanaroff 2018 Table 3; max 19; overlapping Table 3 bounds at HR 100 and SBP 145 use the >= row; score <=2 very low (<5% ICU-complication likelihood); <=5 <10%; >=12 >30%",
"chronic_lung_disease": false,
"prior_revascularization": true
}
]
}
},
"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",
"creatinine_mg_dl",
"heart_rate_bpm",
"systolic_mm_hg",
"troponin_x_uln",
"heart_failure",
"st_depression",
"prior_revascularization",
"chronic_lung_disease"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Fanaroff 2018 Table 3: younger than 70 scores 0; 70 or older scores 1."
},
"heart_failure": {
"type": "boolean",
"description": "Signs or symptoms of heart failure on first medical contact as assigned by the caller (Fanaroff 2018 Table 3). true or false. 5 points if true. magent does not examine the patient."
},
"st_depression": {
"type": "boolean",
"description": "ST-segment depression on the ECG as assigned by the caller (Fanaroff 2018 Table 3). true or false. 1 point if true. magent does not read an ECG."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats per minute (integer 30-220). Table 3 lists <85 → 0; 85–100 → 1; ≥100 → 3. The overlapping bound at 100 uses the ≥100 row (3 points)."
},
"systolic_mm_hg": {
"type": "number",
"description": "Systolic blood pressure in mm Hg (50-250). Table 3: <125 → 3; 125–145 → 1; ≥145 → 0. Lower SBP scores more. The overlapping bound at 145 uses the ≥145 row (0 points)."
},
"troponin_x_uln": {
"type": "number",
"description": "Initial troponin as a multiple of the local upper limit of normal (0-1000). Table 3: <12 → 0; ≥12 → 2. magent does not assay labs; the caller assigns the ratio."
},
"creatinine_mg_dl": {
"type": "number",
"description": "Serum creatinine in mg/dL (0.1-20), or creatinine_umol_l (9-1768) converted as mg/dL = µmol/L / 88.42. Table 3: <1.1 → 0; ≥1.1 → 1. magent does not assay labs."
},
"chronic_lung_disease": {
"type": "boolean",
"description": "Chronic lung disease as assigned by the caller (Fanaroff 2018 Table 3). true or false. 2 points if true."
},
"prior_revascularization": {
"type": "boolean",
"description": "Prior coronary revascularization as assigned by the caller (Fanaroff 2018 Table 3). true or false. Absence of prior revascularization scores 1; presence scores 0."
}
}
},
"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 13:03Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 11:46Z
- 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/action_icu, 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.