magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
TradingLiveeip155:8453Exactvia cdp
Precise-daptBleedingDaptPciAcs
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 08:29Z
—
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/precise_dapt",
"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/precise_dapt",
"tags": [
"precise-dapt",
"bleeding",
"dapt",
"pci",
"acs"
],
"mimeType": "application/json",
"description": "Costa 2017 PRECISE-DAPT nomogram after coronary stenting. Truncated linear points: age (0 at <=50, 19 at >=90), caller CrCl mL/min (0 at >=100, 25 at 0), hemoglobin g/dL (0 at >=12, 15 at <=10), WBC x10^3/uL (0 at <=5, 15 at >=20), plus 26 for previous spontaneous bleeding. Integer score 0-100; high_bleeding_risk if score >=25. Not a DAPT duration order. magent does not compute Cockcroft-Gault.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 50,
"wbc_k_ul": 5,
"crcl_ml_min": 100,
"hemoglobin_g_dl": 12,
"previous_spontaneous_bleeding": false
}
},
"output": {
"type": "json",
"example": {
"score": 0,
"formula": "precise_dapt",
"citation": {
"id": "costa-2017",
"doi": "10.1016/S0140-6736(17)30397-5",
"pmid": "28290994",
"title": "Derivation and validation of the predicting bleeding complications in patients undergoing stent implantation and subsequent dual antiplatelet therapy (PRECISE-DAPT) score: a pooled analysis of individual-patient datasets from clinical trials",
"source": "Lancet. 2017;389(10073):1025-1034",
"authors": "Costa F, van Klaveren D, James S, et al"
},
"wbc_k_ul": 5,
"age_years": 50,
"max_score": 100,
"components": [
{
"value": 50,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 12,
"factor": "hemoglobin_g_dl",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "wbc_k_ul",
"points": 0,
"present": false
},
{
"factor": "previous_spontaneous_bleeding",
"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.",
"crcl_ml_min": 100,
"hemoglobin_g_dl": 12,
"formula_expression": "PRECISE-DAPT = age_points + crcl_points + hemoglobin_points + wbc_points + previous_bleed_points (Costa 2017 Figure 1 nomogram; Table 1 truncated linear terms); age years truncated 50-90 (0 at <=50, 19 at >=90); caller-assigned CrCl mL/min truncated 0-100 (0 at >=100, 25 at 0; magent does not compute Cockcroft-Gault); hemoglobin g/dL truncated 10-12 (0 at >=12, 15 at <=10); WBC x10^3 cells/uL truncated 5-20 (0 at <=5, 15 at >=20); previous spontaneous bleeding 26 if true else 0; integer score is the rounded sum (0-100); high_bleeding_risk iff score >=25",
"high_bleeding_risk": false,
"previous_spontaneous_bleeding": false
}
},
"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",
"crcl_ml_min",
"hemoglobin_g_dl",
"wbc_k_ul",
"previous_spontaneous_bleeding"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Costa 2017 Table 1 truncates below 50 and above 90. Figure 1: <=50 scores 0; >=90 scores 19; linear between. Age 18 and age 50 both score 0."
},
"wbc_k_ul": {
"type": "number",
"description": "White-blood-cell count in x10^3 cells per uL, same as x10^9/L (0.1-100). Table 1 truncates below 5 and above 20. Figure 1: <=5 scores 0; >=20 scores 15; linear between. magent does not assay WBC."
},
"crcl_ml_min": {
"type": "number",
"description": "Creatinine clearance in mL/min (0-300) as assigned by the caller. Costa 2017 Figure 1 uses CrCl, not raw creatinine. magent does not compute Cockcroft-Gault. Truncated above 100: >=100 scores 0; 0 mL/min scores 25; linear between."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (4-22). Table 1 truncates above 12 and below 10. Figure 1: >=12.0 scores 0; <=10.0 scores 15; linear between. magent does not assay hemoglobin."
},
"previous_spontaneous_bleeding": {
"type": "boolean",
"description": "Previous spontaneous bleeding as assigned by the caller (Costa 2017). true scores 26; false scores 0. magent does not take a bleeding history."
}
}
}
},
"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/precise_dapt",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 50,
"wbc_k_ul": 5,
"crcl_ml_min": 100,
"hemoglobin_g_dl": 12,
"previous_spontaneous_bleeding": false
},
{
"age": 50,
"wbc_k_ul": 5,
"crcl_ml_min": 100,
"hemoglobin_g_dl": 12,
"previous_spontaneous_bleeding": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/precise_dapt",
"count": 2,
"items": [
{
"score": 0,
"formula": "precise_dapt",
"citation": {
"id": "costa-2017",
"doi": "10.1016/S0140-6736(17)30397-5",
"pmid": "28290994",
"title": "Derivation and validation of the predicting bleeding complications in patients undergoing stent implantation and subsequent dual antiplatelet therapy (PRECISE-DAPT) score: a pooled analysis of individual-patient datasets from clinical trials",
"source": "Lancet. 2017;389(10073):1025-1034",
"authors": "Costa F, van Klaveren D, James S, et al"
},
"wbc_k_ul": 5,
"age_years": 50,
"max_score": 100,
"components": [
{
"value": 50,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 12,
"factor": "hemoglobin_g_dl",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "wbc_k_ul",
"points": 0,
"present": false
},
{
"factor": "previous_spontaneous_bleeding",
"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.",
"crcl_ml_min": 100,
"hemoglobin_g_dl": 12,
"formula_expression": "PRECISE-DAPT = age_points + crcl_points + hemoglobin_points + wbc_points + previous_bleed_points (Costa 2017 Figure 1 nomogram; Table 1 truncated linear terms); age years truncated 50-90 (0 at <=50, 19 at >=90); caller-assigned CrCl mL/min truncated 0-100 (0 at >=100, 25 at 0; magent does not compute Cockcroft-Gault); hemoglobin g/dL truncated 10-12 (0 at >=12, 15 at <=10); WBC x10^3 cells/uL truncated 5-20 (0 at <=5, 15 at >=20); previous spontaneous bleeding 26 if true else 0; integer score is the rounded sum (0-100); high_bleeding_risk iff score >=25",
"high_bleeding_risk": false,
"previous_spontaneous_bleeding": false
},
{
"score": 0,
"formula": "precise_dapt",
"citation": {
"id": "costa-2017",
"doi": "10.1016/S0140-6736(17)30397-5",
"pmid": "28290994",
"title": "Derivation and validation of the predicting bleeding complications in patients undergoing stent implantation and subsequent dual antiplatelet therapy (PRECISE-DAPT) score: a pooled analysis of individual-patient datasets from clinical trials",
"source": "Lancet. 2017;389(10073):1025-1034",
"authors": "Costa F, van Klaveren D, James S, et al"
},
"wbc_k_ul": 5,
"age_years": 50,
"max_score": 100,
"components": [
{
"value": 50,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 12,
"factor": "hemoglobin_g_dl",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "wbc_k_ul",
"points": 0,
"present": false
},
{
"factor": "previous_spontaneous_bleeding",
"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.",
"crcl_ml_min": 100,
"hemoglobin_g_dl": 12,
"formula_expression": "PRECISE-DAPT = age_points + crcl_points + hemoglobin_points + wbc_points + previous_bleed_points (Costa 2017 Figure 1 nomogram; Table 1 truncated linear terms); age years truncated 50-90 (0 at <=50, 19 at >=90); caller-assigned CrCl mL/min truncated 0-100 (0 at >=100, 25 at 0; magent does not compute Cockcroft-Gault); hemoglobin g/dL truncated 10-12 (0 at >=12, 15 at <=10); WBC x10^3 cells/uL truncated 5-20 (0 at <=5, 15 at >=20); previous spontaneous bleeding 26 if true else 0; integer score is the rounded sum (0-100); high_bleeding_risk iff score >=25",
"high_bleeding_risk": false,
"previous_spontaneous_bleeding": false
}
]
}
},
"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",
"crcl_ml_min",
"hemoglobin_g_dl",
"wbc_k_ul",
"previous_spontaneous_bleeding"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Costa 2017 Table 1 truncates below 50 and above 90. Figure 1: <=50 scores 0; >=90 scores 19; linear between. Age 18 and age 50 both score 0."
},
"wbc_k_ul": {
"type": "number",
"description": "White-blood-cell count in x10^3 cells per uL, same as x10^9/L (0.1-100). Table 1 truncates below 5 and above 20. Figure 1: <=5 scores 0; >=20 scores 15; linear between. magent does not assay WBC."
},
"crcl_ml_min": {
"type": "number",
"description": "Creatinine clearance in mL/min (0-300) as assigned by the caller. Costa 2017 Figure 1 uses CrCl, not raw creatinine. magent does not compute Cockcroft-Gault. Truncated above 100: >=100 scores 0; 0 mL/min scores 25; linear between."
},
"hemoglobin_g_dl": {
"type": "number",
"description": "Hemoglobin in g/dL (4-22). Table 1 truncates above 12 and below 10. Figure 1: >=12.0 scores 0; <=10.0 scores 15; linear between. magent does not assay hemoglobin."
},
"previous_spontaneous_bleeding": {
"type": "boolean",
"description": "Previous spontaneous bleeding as assigned by the caller (Costa 2017). true scores 26; false scores 0. magent does not take a bleeding history."
}
}
},
"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 08:29Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 06:15Z
- 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/precise_dapt, 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.