magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
PrsPneumoniaPediatricRadiographCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 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 2026-09-02 07:08Z
—
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/prs",
"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/prs",
"tags": [
"prs",
"pneumonia",
"pediatric",
"radiograph",
"calculator"
],
"mimeType": "application/json",
"description": "Lipsett 2022 Pneumonia Risk Score for children 3 months to 18 years: logistic probability of radiographic pneumonia from age, triage oxygen saturation, fever, rales, and wheeze, plus the published supplement integer score 1–6. Caller-assigned findings. Not a diagnosis, not a CXR order, and not adult CURB-65.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"fever": false,
"rales": false,
"wheeze": false,
"age_years": 2,
"spo2_percent": 99
}
},
"output": {
"type": "json",
"example": {
"fever": false,
"logit": -3.1668,
"rales": false,
"score": 1,
"wheeze": false,
"formula": "prs",
"citation": {
"id": "lipsett-2022",
"doi": "10.1097/INF.0000000000003361",
"pmid": "34694254",
"title": "Development of the Novel Pneumonia Risk Score to Predict Radiographic Pneumonia in Children",
"source": "Pediatr Infect Dis J. 2022;41(1):24-30",
"authors": "Lipsett SC, Hirsch AW, Monuteaux MC, Bachur RG, Neuman MI"
},
"age_years": 2,
"max_score": 6,
"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.",
"spo2_percent": 99,
"formula_expression": "logit = 18.05624 + 0.098308*age_years + 1.144985*fever + (-0.21636)*spo2_percent + 0.407494*rales + (-0.907087)*wheeze (Lipsett 2022 SDC INF/E552; flags 1 if true else 0); probability_percent = 100 * exp(logit) / (1 + exp(logit)) from the unrounded logit, 2 decimals; score 1 if p < 0.05, 2 if p < 0.11, 3 if p < 0.21, 4 if p < 0.51, 5 if p < 0.75, else 6 (SDC wrote >=0.76 after <0.75; magent closes that hole at 0.75)",
"probability_percent": 4.04
}
},
"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",
"spo2_percent",
"fever",
"rales",
"wheeze"
],
"properties": {
"fever": {
"type": "boolean",
"description": "Fever at home or in the ED (Lipsett 2022 SDC: >38°C). true or false. Caller-assigned."
},
"rales": {
"type": "boolean",
"description": "Rales / crackles on exam as assigned by the caller (Lipsett 2022). true or false. magent does not auscultate."
},
"wheeze": {
"type": "boolean",
"description": "Wheeze on exam as assigned by the caller (Lipsett 2022). true or false. magent does not auscultate."
},
"age_years": {
"type": "number",
"description": "Age in years, continuous (0.25-18). Lipsett 2022 enrolled children 3 months to 18 years. Not adult Params.age."
},
"spo2_percent": {
"type": "number",
"description": "Triage / first oxygen saturation percent (50-100). Caller-assigned. magent does not measure saturation."
}
}
}
},
"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/prs",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"fever": false,
"rales": false,
"wheeze": false,
"age_years": 2,
"spo2_percent": 99
},
{
"fever": false,
"rales": false,
"wheeze": false,
"age_years": 2,
"spo2_percent": 99
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/prs",
"count": 2,
"items": [
{
"fever": false,
"logit": -3.1668,
"rales": false,
"score": 1,
"wheeze": false,
"formula": "prs",
"citation": {
"id": "lipsett-2022",
"doi": "10.1097/INF.0000000000003361",
"pmid": "34694254",
"title": "Development of the Novel Pneumonia Risk Score to Predict Radiographic Pneumonia in Children",
"source": "Pediatr Infect Dis J. 2022;41(1):24-30",
"authors": "Lipsett SC, Hirsch AW, Monuteaux MC, Bachur RG, Neuman MI"
},
"age_years": 2,
"max_score": 6,
"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.",
"spo2_percent": 99,
"formula_expression": "logit = 18.05624 + 0.098308*age_years + 1.144985*fever + (-0.21636)*spo2_percent + 0.407494*rales + (-0.907087)*wheeze (Lipsett 2022 SDC INF/E552; flags 1 if true else 0); probability_percent = 100 * exp(logit) / (1 + exp(logit)) from the unrounded logit, 2 decimals; score 1 if p < 0.05, 2 if p < 0.11, 3 if p < 0.21, 4 if p < 0.51, 5 if p < 0.75, else 6 (SDC wrote >=0.76 after <0.75; magent closes that hole at 0.75)",
"probability_percent": 4.04
},
{
"fever": false,
"logit": -3.1668,
"rales": false,
"score": 1,
"wheeze": false,
"formula": "prs",
"citation": {
"id": "lipsett-2022",
"doi": "10.1097/INF.0000000000003361",
"pmid": "34694254",
"title": "Development of the Novel Pneumonia Risk Score to Predict Radiographic Pneumonia in Children",
"source": "Pediatr Infect Dis J. 2022;41(1):24-30",
"authors": "Lipsett SC, Hirsch AW, Monuteaux MC, Bachur RG, Neuman MI"
},
"age_years": 2,
"max_score": 6,
"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.",
"spo2_percent": 99,
"formula_expression": "logit = 18.05624 + 0.098308*age_years + 1.144985*fever + (-0.21636)*spo2_percent + 0.407494*rales + (-0.907087)*wheeze (Lipsett 2022 SDC INF/E552; flags 1 if true else 0); probability_percent = 100 * exp(logit) / (1 + exp(logit)) from the unrounded logit, 2 decimals; score 1 if p < 0.05, 2 if p < 0.11, 3 if p < 0.21, 4 if p < 0.51, 5 if p < 0.75, else 6 (SDC wrote >=0.76 after <0.75; magent closes that hole at 0.75)",
"probability_percent": 4.04
}
]
}
},
"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",
"spo2_percent",
"fever",
"rales",
"wheeze"
],
"properties": {
"fever": {
"type": "boolean",
"description": "Fever at home or in the ED (Lipsett 2022 SDC: >38°C). true or false. Caller-assigned."
},
"rales": {
"type": "boolean",
"description": "Rales / crackles on exam as assigned by the caller (Lipsett 2022). true or false. magent does not auscultate."
},
"wheeze": {
"type": "boolean",
"description": "Wheeze on exam as assigned by the caller (Lipsett 2022). true or false. magent does not auscultate."
},
"age_years": {
"type": "number",
"description": "Age in years, continuous (0.25-18). Lipsett 2022 enrolled children 3 months to 18 years. Not adult Params.age."
},
"spo2_percent": {
"type": "number",
"description": "Triage / first oxygen saturation percent (50-100). Caller-assigned. magent does not measure saturation."
}
}
},
"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
- 2026-09-02 07:08Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 22:45Z
- 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. 7 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/prs, 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.