magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Inferenceofflineeip155:8453Exactvia cdp
ReadmitsAmiAcsReadmissionCalculator
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 12:29Z
—
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/readmits",
"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/readmits",
"tags": [
"readmits",
"ami",
"acs",
"readmission",
"calculator"
],
"mimeType": "application/json",
"description": "Nguyen 2018 first-day AMI READMITS integer score for 30-day all-cause readmission: creatinine >2 mg/dL (6), elevated BNP >=50 or NT-proBNP >=125 pg/mL (8), 1 point per decade over 18, diabetes (4), female sex (2), no PCI within 24 hours (1), SBP <100 mm Hg (3). Table 4 quintiles with mean predicted risk. Not a medical device, not a PCI or discharge order, and not the full-stay model.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"sex": "male",
"diabetes": false,
"age_years": 58,
"sbp_lt_100": false,
"elevated_bnp": false,
"pci_within_24h": true,
"creatinine_gt_2": false
}
},
"output": {
"type": "json",
"example": {
"sex": "male",
"score": 4,
"formula": "readmits",
"citation": {
"id": "nguyen-2018",
"doi": "10.1161/JAHA.118.008882",
"pmid": "29666144",
"title": "Predicting 30-Day Hospital Readmissions in Acute Myocardial Infarction: The AMI \"READMITS\" (Renal Function, Elevated Brain Natriuretic Peptide, Age, Diabetes Mellitus, Nonmale Sex, Intervention with Timely Percutaneous Coronary Intervention, and Low Systolic Blood Pressure) Score",
"source": "J Am Heart Assoc. 2018;7(8):e008882",
"authors": "Nguyen OK, Makam AN, Clark C, et al."
},
"diabetes": false,
"quintile": "extremely_low",
"age_years": 58,
"max_score": 32,
"components": [
{
"factor": "creatinine_gt_2",
"points": 0,
"present": false
},
{
"factor": "elevated_bnp",
"points": 0,
"present": false
},
{
"value": 58,
"factor": "age_years",
"points": 4,
"present": true
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "no_pci_within_24h",
"points": 0,
"present": false
},
{
"factor": "sbp_lt_100",
"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.",
"sbp_lt_100": false,
"age_decades": 4,
"elevated_bnp": false,
"pci_within_24h": true,
"creatinine_gt_2": false,
"formula_expression": "READMITS = creatinine_gt_2 (6) + elevated_bnp (8) + floor((age_years-18)/10) (1 per decade >18) + diabetes (4) + female (2) + no_pci_within_24h (1) + sbp_lt_100 (3); Nguyen 2018 first-day AMI READMITS Table 2; max 32 at age 100; Table 4 quintiles <=13 extremely_low 3%, 14-15 low 7%, 16-17 moderate 11%, 18-19 high 16%, >=20 extremely_high 35%",
"predicted_readmission_percent": 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_years",
"sex",
"creatinine_gt_2",
"elevated_bnp",
"diabetes",
"pci_within_24h",
"sbp_lt_100"
],
"properties": {
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "female or male (Nguyen 2018 nonmale sex). Female scores 2. Male scores 0. A published sex item, not race."
},
"diabetes": {
"type": "boolean",
"description": "Diabetes mellitus history (Nguyen 2018: 4 points). true or false."
},
"age_years": {
"type": "integer",
"description": "Age in years (18-100). Nguyen 2018: 1 point per decade over 18, floor((age_years-18)/10)."
},
"sbp_lt_100": {
"type": "boolean",
"description": "Whether systolic blood pressure was <100 mm Hg within the first 24 hours (Nguyen 2018: 3 points). Caller-assigned boolean; magent does not take an SBP number."
},
"elevated_bnp": {
"type": "boolean",
"description": "Whether BNP was >=50 pg/mL or NT-proBNP was >=125 pg/mL within the first 24 hours (Nguyen 2018: 8 points). Caller-assigned. magent does not assay natriuretic peptides."
},
"pci_within_24h": {
"type": "boolean",
"description": "Whether PCI occurred within the first 24 hours (Nguyen 2018: false scores 1; true scores 0). Caller-assigned. magent does not read timestamps or the angiogram."
},
"creatinine_gt_2": {
"type": "boolean",
"description": "Whether serum creatinine was >2 mg/dL within the first 24 hours (Nguyen 2018: 6 points). Caller-assigned. magent does not assay creatinine."
}
}
}
},
"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/readmits",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"sex": "male",
"diabetes": false,
"age_years": 58,
"sbp_lt_100": false,
"elevated_bnp": false,
"pci_within_24h": true,
"creatinine_gt_2": false
},
{
"sex": "male",
"diabetes": false,
"age_years": 58,
"sbp_lt_100": false,
"elevated_bnp": false,
"pci_within_24h": true,
"creatinine_gt_2": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/readmits",
"count": 2,
"items": [
{
"sex": "male",
"score": 4,
"formula": "readmits",
"citation": {
"id": "nguyen-2018",
"doi": "10.1161/JAHA.118.008882",
"pmid": "29666144",
"title": "Predicting 30-Day Hospital Readmissions in Acute Myocardial Infarction: The AMI \"READMITS\" (Renal Function, Elevated Brain Natriuretic Peptide, Age, Diabetes Mellitus, Nonmale Sex, Intervention with Timely Percutaneous Coronary Intervention, and Low Systolic Blood Pressure) Score",
"source": "J Am Heart Assoc. 2018;7(8):e008882",
"authors": "Nguyen OK, Makam AN, Clark C, et al."
},
"diabetes": false,
"quintile": "extremely_low",
"age_years": 58,
"max_score": 32,
"components": [
{
"factor": "creatinine_gt_2",
"points": 0,
"present": false
},
{
"factor": "elevated_bnp",
"points": 0,
"present": false
},
{
"value": 58,
"factor": "age_years",
"points": 4,
"present": true
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "no_pci_within_24h",
"points": 0,
"present": false
},
{
"factor": "sbp_lt_100",
"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.",
"sbp_lt_100": false,
"age_decades": 4,
"elevated_bnp": false,
"pci_within_24h": true,
"creatinine_gt_2": false,
"formula_expression": "READMITS = creatinine_gt_2 (6) + elevated_bnp (8) + floor((age_years-18)/10) (1 per decade >18) + diabetes (4) + female (2) + no_pci_within_24h (1) + sbp_lt_100 (3); Nguyen 2018 first-day AMI READMITS Table 2; max 32 at age 100; Table 4 quintiles <=13 extremely_low 3%, 14-15 low 7%, 16-17 moderate 11%, 18-19 high 16%, >=20 extremely_high 35%",
"predicted_readmission_percent": 3
},
{
"sex": "male",
"score": 4,
"formula": "readmits",
"citation": {
"id": "nguyen-2018",
"doi": "10.1161/JAHA.118.008882",
"pmid": "29666144",
"title": "Predicting 30-Day Hospital Readmissions in Acute Myocardial Infarction: The AMI \"READMITS\" (Renal Function, Elevated Brain Natriuretic Peptide, Age, Diabetes Mellitus, Nonmale Sex, Intervention with Timely Percutaneous Coronary Intervention, and Low Systolic Blood Pressure) Score",
"source": "J Am Heart Assoc. 2018;7(8):e008882",
"authors": "Nguyen OK, Makam AN, Clark C, et al."
},
"diabetes": false,
"quintile": "extremely_low",
"age_years": 58,
"max_score": 32,
"components": [
{
"factor": "creatinine_gt_2",
"points": 0,
"present": false
},
{
"factor": "elevated_bnp",
"points": 0,
"present": false
},
{
"value": 58,
"factor": "age_years",
"points": 4,
"present": true
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "no_pci_within_24h",
"points": 0,
"present": false
},
{
"factor": "sbp_lt_100",
"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.",
"sbp_lt_100": false,
"age_decades": 4,
"elevated_bnp": false,
"pci_within_24h": true,
"creatinine_gt_2": false,
"formula_expression": "READMITS = creatinine_gt_2 (6) + elevated_bnp (8) + floor((age_years-18)/10) (1 per decade >18) + diabetes (4) + female (2) + no_pci_within_24h (1) + sbp_lt_100 (3); Nguyen 2018 first-day AMI READMITS Table 2; max 32 at age 100; Table 4 quintiles <=13 extremely_low 3%, 14-15 low 7%, 16-17 moderate 11%, 18-19 high 16%, >=20 extremely_high 35%",
"predicted_readmission_percent": 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_years",
"sex",
"creatinine_gt_2",
"elevated_bnp",
"diabetes",
"pci_within_24h",
"sbp_lt_100"
],
"properties": {
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "female or male (Nguyen 2018 nonmale sex). Female scores 2. Male scores 0. A published sex item, not race."
},
"diabetes": {
"type": "boolean",
"description": "Diabetes mellitus history (Nguyen 2018: 4 points). true or false."
},
"age_years": {
"type": "integer",
"description": "Age in years (18-100). Nguyen 2018: 1 point per decade over 18, floor((age_years-18)/10)."
},
"sbp_lt_100": {
"type": "boolean",
"description": "Whether systolic blood pressure was <100 mm Hg within the first 24 hours (Nguyen 2018: 3 points). Caller-assigned boolean; magent does not take an SBP number."
},
"elevated_bnp": {
"type": "boolean",
"description": "Whether BNP was >=50 pg/mL or NT-proBNP was >=125 pg/mL within the first 24 hours (Nguyen 2018: 8 points). Caller-assigned. magent does not assay natriuretic peptides."
},
"pci_within_24h": {
"type": "boolean",
"description": "Whether PCI occurred within the first 24 hours (Nguyen 2018: false scores 1; true scores 0). Caller-assigned. magent does not read timestamps or the angiogram."
},
"creatinine_gt_2": {
"type": "boolean",
"description": "Whether serum creatinine was >2 mg/dL within the first 24 hours (Nguyen 2018: 6 points). Caller-assigned. magent does not assay creatinine."
}
}
},
"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 12:29Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 03:15Z
- 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. 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/readmits, 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.