magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
SearchLiveeip155:8453Exactvia cdp
CrusadeBleedingNstemiAcsCalculator
Calls · 30d
3→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 15 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 13:03Z
—
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/crusade",
"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/crusade",
"tags": [
"crusade",
"bleeding",
"nstemi",
"acs",
"calculator"
],
"mimeType": "application/json",
"description": "CRUSADE in-hospital major bleeding score (Subherwal 2009 Table 4) for NSTE-ACS / NSTEMI. Points from hematocrit, caller-assigned Cockcroft–Gault CrCl, heart rate, sex, CHF, prior vascular disease, diabetes, and systolic BP. Returns integer score (max 96), quintile band, and published in-hospital major-bleeding percent. Not a medical device; magent does not compute CrCl or examine the patient.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"sex": "male",
"diabetes": false,
"crcl_ml_min": 130,
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"hematocrit_percent": 42,
"prior_vascular_disease": false
}
},
"output": {
"type": "json",
"example": {
"sex": "male",
"score": 1,
"formula": "crusade",
"citation": {
"id": "subherwal-2009",
"doi": "10.1161/CIRCULATIONAHA.108.828541",
"pmid": "19332461",
"title": "Baseline risk of major bleeding in non–ST-segment-elevation myocardial infarction: the CRUSADE Bleeding Score",
"source": "Circulation. 2009;119(14):1873-1882",
"authors": "Subherwal S, Bach RG, Chen AY, et al."
},
"diabetes": false,
"max_score": 96,
"components": [
{
"value": 42,
"factor": "hematocrit_percent",
"points": 0,
"present": false
},
{
"value": 130,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 65,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "signs_of_chf",
"points": 0,
"present": false
},
{
"factor": "prior_vascular_disease",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 140,
"factor": "systolic_mm_hg",
"points": 1,
"present": true
}
],
"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.",
"crcl_ml_min": 130,
"crusade_band": "very_low",
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"formula_expression": "CRUSADE = hematocrit(<31:9, 31-<34:7, 34-<37:3, 37-<40:2, >=40:0) + crcl_ml_min(<=15:39, >15-30:35, >30-60:28, >60-90:17, >90-120:7, >120:0) + heart_rate(<=70:0, 71-80:1, 81-90:3, 91-100:6, 101-110:8, 111-120:10, >=121:11) + female(8) + signs_of_chf(7) + prior_vascular_disease(6) + diabetes(6) + systolic(<=90:10, 91-100:8, 101-120:5, 121-180:1, 181-200:3, >=201:5); Subherwal 2009 Table 4; quintiles <=20 3.1%, 21-30 5.5%, 31-40 8.6%, 41-50 11.9%, >50 19.5%; max 96",
"hematocrit_percent": 42,
"prior_vascular_disease": false,
"in_hospital_major_bleeding_percent": 3.1
}
},
"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": [
"hematocrit_percent",
"crcl_ml_min",
"heart_rate_bpm",
"sex",
"signs_of_chf",
"prior_vascular_disease",
"diabetes",
"systolic_mm_hg"
],
"properties": {
"sex": {
"type": "string",
"description": "Sex (female or male). Female scores 8; male scores 0."
},
"diabetes": {
"type": "boolean",
"description": "Diabetes mellitus as assigned by the caller. true or false. 6 points if true."
},
"crcl_ml_min": {
"type": "number",
"description": "Creatinine clearance in mL/min (1-300), Cockcroft–Gault as assigned by the caller. magent does not compute Cockcroft–Gault. Table 4: ≤15 → 39; >15–30 → 35; >30–60 → 28; >60–90 → 17; >90–120 → 7; >120 → 0."
},
"signs_of_chf": {
"type": "boolean",
"description": "Signs of CHF at presentation as assigned by the caller. true or false. 7 points if true. magent does not examine the patient."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats per minute (integer 30-220). Table 4: ≤70 → 0; 71–80 → 1; 81–90 → 3; 91–100 → 6; 101–110 → 8; 111–120 → 10; ≥121 → 11."
},
"systolic_mm_hg": {
"type": "number",
"description": "Systolic blood pressure in mm Hg (50-250). Table 4 is non-monotonic: ≤90 → 10; 91–100 → 8; 101–120 → 5; 121–180 → 1; 181–200 → 3; ≥201 → 5."
},
"hematocrit_percent": {
"type": "number",
"description": "Hematocrit percent (10-70). Subherwal 2009 Table 4: <31 → 9; 31–<34 → 7; 34–<37 → 3; 37–<40 → 2; ≥40 → 0."
},
"prior_vascular_disease": {
"type": "boolean",
"description": "Prior vascular disease (PAD or prior stroke) as assigned by the caller. true or false. 6 points if true."
}
}
}
},
"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/crusade",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"sex": "male",
"diabetes": false,
"crcl_ml_min": 130,
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"hematocrit_percent": 42,
"prior_vascular_disease": false
},
{
"sex": "male",
"diabetes": false,
"crcl_ml_min": 130,
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"hematocrit_percent": 42,
"prior_vascular_disease": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/crusade",
"count": 2,
"items": [
{
"sex": "male",
"score": 1,
"formula": "crusade",
"citation": {
"id": "subherwal-2009",
"doi": "10.1161/CIRCULATIONAHA.108.828541",
"pmid": "19332461",
"title": "Baseline risk of major bleeding in non–ST-segment-elevation myocardial infarction: the CRUSADE Bleeding Score",
"source": "Circulation. 2009;119(14):1873-1882",
"authors": "Subherwal S, Bach RG, Chen AY, et al."
},
"diabetes": false,
"max_score": 96,
"components": [
{
"value": 42,
"factor": "hematocrit_percent",
"points": 0,
"present": false
},
{
"value": 130,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 65,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "signs_of_chf",
"points": 0,
"present": false
},
{
"factor": "prior_vascular_disease",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 140,
"factor": "systolic_mm_hg",
"points": 1,
"present": true
}
],
"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.",
"crcl_ml_min": 130,
"crusade_band": "very_low",
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"formula_expression": "CRUSADE = hematocrit(<31:9, 31-<34:7, 34-<37:3, 37-<40:2, >=40:0) + crcl_ml_min(<=15:39, >15-30:35, >30-60:28, >60-90:17, >90-120:7, >120:0) + heart_rate(<=70:0, 71-80:1, 81-90:3, 91-100:6, 101-110:8, 111-120:10, >=121:11) + female(8) + signs_of_chf(7) + prior_vascular_disease(6) + diabetes(6) + systolic(<=90:10, 91-100:8, 101-120:5, 121-180:1, 181-200:3, >=201:5); Subherwal 2009 Table 4; quintiles <=20 3.1%, 21-30 5.5%, 31-40 8.6%, 41-50 11.9%, >50 19.5%; max 96",
"hematocrit_percent": 42,
"prior_vascular_disease": false,
"in_hospital_major_bleeding_percent": 3.1
},
{
"sex": "male",
"score": 1,
"formula": "crusade",
"citation": {
"id": "subherwal-2009",
"doi": "10.1161/CIRCULATIONAHA.108.828541",
"pmid": "19332461",
"title": "Baseline risk of major bleeding in non–ST-segment-elevation myocardial infarction: the CRUSADE Bleeding Score",
"source": "Circulation. 2009;119(14):1873-1882",
"authors": "Subherwal S, Bach RG, Chen AY, et al."
},
"diabetes": false,
"max_score": 96,
"components": [
{
"value": 42,
"factor": "hematocrit_percent",
"points": 0,
"present": false
},
{
"value": 130,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 65,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "signs_of_chf",
"points": 0,
"present": false
},
{
"factor": "prior_vascular_disease",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 140,
"factor": "systolic_mm_hg",
"points": 1,
"present": true
}
],
"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.",
"crcl_ml_min": 130,
"crusade_band": "very_low",
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"formula_expression": "CRUSADE = hematocrit(<31:9, 31-<34:7, 34-<37:3, 37-<40:2, >=40:0) + crcl_ml_min(<=15:39, >15-30:35, >30-60:28, >60-90:17, >90-120:7, >120:0) + heart_rate(<=70:0, 71-80:1, 81-90:3, 91-100:6, 101-110:8, 111-120:10, >=121:11) + female(8) + signs_of_chf(7) + prior_vascular_disease(6) + diabetes(6) + systolic(<=90:10, 91-100:8, 101-120:5, 121-180:1, 181-200:3, >=201:5); Subherwal 2009 Table 4; quintiles <=20 3.1%, 21-30 5.5%, 31-40 8.6%, 41-50 11.9%, >50 19.5%; max 96",
"hematocrit_percent": 42,
"prior_vascular_disease": false,
"in_hospital_major_bleeding_percent": 3.1
}
]
}
},
"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": [
"hematocrit_percent",
"crcl_ml_min",
"heart_rate_bpm",
"sex",
"signs_of_chf",
"prior_vascular_disease",
"diabetes",
"systolic_mm_hg"
],
"properties": {
"sex": {
"type": "string",
"description": "Sex (female or male). Female scores 8; male scores 0."
},
"diabetes": {
"type": "boolean",
"description": "Diabetes mellitus as assigned by the caller. true or false. 6 points if true."
},
"crcl_ml_min": {
"type": "number",
"description": "Creatinine clearance in mL/min (1-300), Cockcroft–Gault as assigned by the caller. magent does not compute Cockcroft–Gault. Table 4: ≤15 → 39; >15–30 → 35; >30–60 → 28; >60–90 → 17; >90–120 → 7; >120 → 0."
},
"signs_of_chf": {
"type": "boolean",
"description": "Signs of CHF at presentation as assigned by the caller. true or false. 7 points if true. magent does not examine the patient."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats per minute (integer 30-220). Table 4: ≤70 → 0; 71–80 → 1; 81–90 → 3; 91–100 → 6; 101–110 → 8; 111–120 → 10; ≥121 → 11."
},
"systolic_mm_hg": {
"type": "number",
"description": "Systolic blood pressure in mm Hg (50-250). Table 4 is non-monotonic: ≤90 → 10; 91–100 → 8; 101–120 → 5; 121–180 → 1; 181–200 → 3; ≥201 → 5."
},
"hematocrit_percent": {
"type": "number",
"description": "Hematocrit percent (10-70). Subherwal 2009 Table 4: <31 → 9; 31–<34 → 7; 34–<37 → 3; 37–<40 → 2; ≥40 → 0."
},
"prior_vascular_disease": {
"type": "boolean",
"description": "Prior vascular disease (PAD or prior stroke) as assigned by the caller. true or false. 6 points if true."
}
}
},
"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)
- 2026-09-24 00:15Z
- 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. 15 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/crusade, 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.