magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
MurrayLisRespiratoryLung-injuryCalculator
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 12:55Z
—
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/murray",
"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/murray",
"tags": [
"murray",
"lis",
"respiratory",
"lung-injury",
"calculator"
],
"mimeType": "application/json",
"description": "Murray 1988 lung injury score (LIS): mean of four 0–4 components (caller-assigned CXR quadrants; PaO2/FiO2 ≥300→0, 225–299→1, 175–224→2, 100–174→3, <100→4; PEEP cm H2O ≤5→0, 6–8→1, 9–11→2, 12–14→3, ≥15→4; compliance mL/cm H2O ≥80→0, 60–79→1, 40–59→2, 20–39→3, ≤19→4). LIS 0 none, 0<LIS≤2.5 mild_moderate, >2.5 severe. Not a medical device, not a Berlin ARDS diagnosis, not a ventilator order. magent does not interpret imaging.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"pf_ratio": 400,
"peep_cm_h2o": 5,
"compliance_ml_cm_h2o": 90,
"chest_radiograph_quadrants": 0
}
},
"output": {
"type": "json",
"example": {
"lis": 0,
"formula": "murray",
"citation": {
"id": "murray-1988",
"doi": "10.1164/ajrccm/138.3.720",
"pmid": "3202424",
"title": "An expanded definition of the adult respiratory distress syndrome",
"source": "Am Rev Respir Dis. 1988;138(3):720-723",
"authors": "Murray JF, Matthay MA, Luce JM, Flick MR"
},
"pf_ratio": 400,
"components": [
{
"value": 0,
"factor": "chest_radiograph_quadrants",
"points": 0,
"present": false
},
{
"value": 400,
"factor": "pf_ratio",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "peep_cm_h2o",
"points": 0,
"present": false
},
{
"value": 90,
"factor": "compliance_ml_cm_h2o",
"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.",
"injury_band": "none",
"peep_cm_h2o": 5,
"formula_expression": "LIS = mean of chest_radiograph_quadrants (0–4) + PaO2/FiO2 (≥300→0, 225–299→1, 175–224→2, 100–174→3, <100→4) + PEEP cm H2O (≤5→0, 6–8→1, 9–11→2, 12–14→3, ≥15→4) + compliance mL/cm H2O (≥80→0, 60–79→1, 40–59→2, 20–39→3, ≤19→4); Murray 1988; none if LIS=0, mild_moderate if 0<LIS≤2.5, severe if LIS>2.5",
"compliance_ml_cm_h2o": 90,
"chest_radiograph_quadrants": 0
}
},
"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": [
"chest_radiograph_quadrants",
"pf_ratio",
"peep_cm_h2o",
"compliance_ml_cm_h2o"
],
"properties": {
"pf_ratio": {
"type": "number",
"description": "PaO2/FiO2 ratio (20-800). Murray 1988: ≥300 → 0, 225-299 → 1, 175-224 → 2, 100-174 → 3, <100 → 4. magent does not read an ABG."
},
"peep_cm_h2o": {
"type": "number",
"description": "PEEP in cm H2O (0-40). Murray 1988: ≤5 → 0, 6-8 → 1, 9-11 → 2, 12-14 → 3, ≥15 → 4. Not a ventilator order. magent does not set PEEP."
},
"compliance_ml_cm_h2o": {
"type": "number",
"description": "Respiratory system compliance in mL/cm H2O (5-200). Murray 1988: ≥80 → 0, 60-79 → 1, 40-59 → 2, 20-39 → 3, ≤19 → 4. magent does not measure compliance."
},
"chest_radiograph_quadrants": {
"enum": [
0,
1,
2,
3,
4
],
"type": "integer",
"description": "Caller-assigned alveolar consolidation quadrants 0-4 (Murray 1988). 0 none, 1 one quadrant, 2 two quadrants, 3 three quadrants, 4 four quadrants. The integer is that component's points. magent does not interpret imaging."
}
}
}
},
"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/murray",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"pf_ratio": 400,
"peep_cm_h2o": 5,
"compliance_ml_cm_h2o": 90,
"chest_radiograph_quadrants": 0
},
{
"pf_ratio": 400,
"peep_cm_h2o": 5,
"compliance_ml_cm_h2o": 90,
"chest_radiograph_quadrants": 0
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/murray",
"count": 2,
"items": [
{
"lis": 0,
"formula": "murray",
"citation": {
"id": "murray-1988",
"doi": "10.1164/ajrccm/138.3.720",
"pmid": "3202424",
"title": "An expanded definition of the adult respiratory distress syndrome",
"source": "Am Rev Respir Dis. 1988;138(3):720-723",
"authors": "Murray JF, Matthay MA, Luce JM, Flick MR"
},
"pf_ratio": 400,
"components": [
{
"value": 0,
"factor": "chest_radiograph_quadrants",
"points": 0,
"present": false
},
{
"value": 400,
"factor": "pf_ratio",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "peep_cm_h2o",
"points": 0,
"present": false
},
{
"value": 90,
"factor": "compliance_ml_cm_h2o",
"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.",
"injury_band": "none",
"peep_cm_h2o": 5,
"formula_expression": "LIS = mean of chest_radiograph_quadrants (0–4) + PaO2/FiO2 (≥300→0, 225–299→1, 175–224→2, 100–174→3, <100→4) + PEEP cm H2O (≤5→0, 6–8→1, 9–11→2, 12–14→3, ≥15→4) + compliance mL/cm H2O (≥80→0, 60–79→1, 40–59→2, 20–39→3, ≤19→4); Murray 1988; none if LIS=0, mild_moderate if 0<LIS≤2.5, severe if LIS>2.5",
"compliance_ml_cm_h2o": 90,
"chest_radiograph_quadrants": 0
},
{
"lis": 0,
"formula": "murray",
"citation": {
"id": "murray-1988",
"doi": "10.1164/ajrccm/138.3.720",
"pmid": "3202424",
"title": "An expanded definition of the adult respiratory distress syndrome",
"source": "Am Rev Respir Dis. 1988;138(3):720-723",
"authors": "Murray JF, Matthay MA, Luce JM, Flick MR"
},
"pf_ratio": 400,
"components": [
{
"value": 0,
"factor": "chest_radiograph_quadrants",
"points": 0,
"present": false
},
{
"value": 400,
"factor": "pf_ratio",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "peep_cm_h2o",
"points": 0,
"present": false
},
{
"value": 90,
"factor": "compliance_ml_cm_h2o",
"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.",
"injury_band": "none",
"peep_cm_h2o": 5,
"formula_expression": "LIS = mean of chest_radiograph_quadrants (0–4) + PaO2/FiO2 (≥300→0, 225–299→1, 175–224→2, 100–174→3, <100→4) + PEEP cm H2O (≤5→0, 6–8→1, 9–11→2, 12–14→3, ≥15→4) + compliance mL/cm H2O (≥80→0, 60–79→1, 40–59→2, 20–39→3, ≤19→4); Murray 1988; none if LIS=0, mild_moderate if 0<LIS≤2.5, severe if LIS>2.5",
"compliance_ml_cm_h2o": 90,
"chest_radiograph_quadrants": 0
}
]
}
},
"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": [
"chest_radiograph_quadrants",
"pf_ratio",
"peep_cm_h2o",
"compliance_ml_cm_h2o"
],
"properties": {
"pf_ratio": {
"type": "number",
"description": "PaO2/FiO2 ratio (20-800). Murray 1988: ≥300 → 0, 225-299 → 1, 175-224 → 2, 100-174 → 3, <100 → 4. magent does not read an ABG."
},
"peep_cm_h2o": {
"type": "number",
"description": "PEEP in cm H2O (0-40). Murray 1988: ≤5 → 0, 6-8 → 1, 9-11 → 2, 12-14 → 3, ≥15 → 4. Not a ventilator order. magent does not set PEEP."
},
"compliance_ml_cm_h2o": {
"type": "number",
"description": "Respiratory system compliance in mL/cm H2O (5-200). Murray 1988: ≥80 → 0, 60-79 → 1, 40-59 → 2, 20-39 → 3, ≤19 → 4. magent does not measure compliance."
},
"chest_radiograph_quadrants": {
"enum": [
0,
1,
2,
3,
4
],
"type": "integer",
"description": "Caller-assigned alveolar consolidation quadrants 0-4 (Murray 1988). 0 none, 1 one quadrant, 2 two quadrants, 3 three quadrants, 4 four quadrants. The integer is that component's points. magent does not interpret imaging."
}
}
},
"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 12:55Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 08:45Z
- 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. 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/murray, 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.