magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
Rescue-ihcaEcprIhcaMortalityCalculator
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 11:46Z
—
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/rescue_ihca",
"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/rescue_ihca",
"tags": [
"rescue-ihca",
"ecpr",
"ihca",
"mortality",
"calculator"
],
"mimeType": "application/json",
"description": "Tonna 2022 RESCUE-IHCA Table 2 integer score for in-hospital death after adult ECPR. Age 2 + 2 per 10 years after 20. Renal +8. Time: day 0, evening +4, night +13. Illness: medical noncardiac 0, medical cardiac -2, surgical noncardiac -6, surgical cardiac -11. Rhythm: asystole 0, PEA -1, pVT -5, VF -8, palpable pulse -5. Duration +2 per 10 min. Table 2 min -17. Integer score only. Not an ECPR order.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 20,
"time_of_day": "day_0700_1459",
"duration_min": 0,
"illness_category": "surgical_cardiac",
"presenting_rhythm": "vf",
"preexisting_renal_insufficiency": false
}
},
"output": {
"type": "json",
"example": {
"score": -17,
"formula": "rescue_ihca",
"citation": {
"id": "tonna-2022",
"doi": "10.1016/j.jcin.2021.09.032",
"pmid": "35033471",
"title": "Resuscitation Using ECPR During In-Hospital Cardiac Arrest (RESCUE-IHCA) Mortality Prediction Score and External Validation",
"source": "JACC Cardiovasc Interv. 2022;15(3):237-247",
"authors": "Tonna JE, Selzman CH, Girotra S, et al."
},
"min_score": -17,
"components": [
{
"value": 20,
"factor": "age",
"points": 2,
"present": true
},
{
"factor": "preexisting_renal_insufficiency",
"points": 0,
"present": false
},
{
"value": "day_0700_1459",
"factor": "time_of_day",
"points": 0,
"present": false
},
{
"value": "surgical_cardiac",
"factor": "illness_category",
"points": -11,
"present": true
},
{
"value": "vf",
"factor": "presenting_rhythm",
"points": -8,
"present": true
},
{
"value": 0,
"factor": "duration_min",
"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.",
"formula_expression": "RESCUE-IHCA = age(2 + 2 * max(0, floor((age-20)/10))) + preexisting_renal_insufficiency(yes 8) + time_of_day(day_0700_1459 0, evening_1500_2259 4, night_2300_0659 13) + illness_category(medical_noncardiac 0, medical_cardiac -2, surgical_noncardiac -6, surgical_cardiac -11) + presenting_rhythm(asystole 0, pea -1, pvt -5, vf -8, palpable_pulse_initially -5) + duration_min(2 * floor(duration_min/10)); Tonna 2022 Table 2; theoretical min -17; paper text about -15 to >40; higher score → higher probability of in-hospital death (Figure 3 curve 0.22-0.99); integer score only"
}
},
"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",
"preexisting_renal_insufficiency",
"time_of_day",
"illness_category",
"presenting_rhythm",
"duration_min"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Tonna 2022 Table 2: ≤20 → 2; each additional 10 years → +2, implemented as 2 + 2 * max(0, floor((age-20)/10)) so 20 → 2, 29 → 2, 30 → 4, 40 → 6. Adult derivation (excluded age <18). Caller-supplied; magent does not examine the patient."
},
"time_of_day": {
"type": "string",
"description": "Time of day of arrest (Tonna 2022 Table 2). day_0700_1459 (07:00-14:59, reference) → 0; evening_1500_2259 (15:00-22:59) → +4; night_2300_0659 (23:00-06:59) → +13. Caller-assigned; magent does not read a clock."
},
"duration_min": {
"type": "integer",
"description": "Duration of cardiac arrest in integer minutes (0-180). Tonna 2022 Table 2: +2 per complete 10 minutes (2 * floor(duration_min/10)). 0-9 → 0; 10-19 → +2; 20-29 → +4. Caller-supplied; magent does not time the arrest."
},
"illness_category": {
"type": "string",
"description": "Illness category (Tonna 2022 Table 2). medical_noncardiac (reference) → 0; medical_cardiac → -2; surgical_noncardiac → -6; surgical_cardiac → -11. Caller-assigned; magent does not classify the admission."
},
"presenting_rhythm": {
"type": "string",
"description": "Presenting rhythm (Tonna 2022 Table 2). asystole (reference) → 0; pea → -1; pvt → -5; vf → -8; palpable_pulse_initially → -5. Caller-assigned; magent does not interpret a monitor."
},
"preexisting_renal_insufficiency": {
"type": "boolean",
"description": "Preexisting renal insufficiency as assigned by the caller (Tonna 2022 Table 2). true → +8. false → 0. magent does not grade 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/rescue_ihca",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 20,
"time_of_day": "day_0700_1459",
"duration_min": 0,
"illness_category": "surgical_cardiac",
"presenting_rhythm": "vf",
"preexisting_renal_insufficiency": false
},
{
"age": 20,
"time_of_day": "day_0700_1459",
"duration_min": 0,
"illness_category": "surgical_cardiac",
"presenting_rhythm": "vf",
"preexisting_renal_insufficiency": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/rescue_ihca",
"count": 2,
"items": [
{
"score": -17,
"formula": "rescue_ihca",
"citation": {
"id": "tonna-2022",
"doi": "10.1016/j.jcin.2021.09.032",
"pmid": "35033471",
"title": "Resuscitation Using ECPR During In-Hospital Cardiac Arrest (RESCUE-IHCA) Mortality Prediction Score and External Validation",
"source": "JACC Cardiovasc Interv. 2022;15(3):237-247",
"authors": "Tonna JE, Selzman CH, Girotra S, et al."
},
"min_score": -17,
"components": [
{
"value": 20,
"factor": "age",
"points": 2,
"present": true
},
{
"factor": "preexisting_renal_insufficiency",
"points": 0,
"present": false
},
{
"value": "day_0700_1459",
"factor": "time_of_day",
"points": 0,
"present": false
},
{
"value": "surgical_cardiac",
"factor": "illness_category",
"points": -11,
"present": true
},
{
"value": "vf",
"factor": "presenting_rhythm",
"points": -8,
"present": true
},
{
"value": 0,
"factor": "duration_min",
"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.",
"formula_expression": "RESCUE-IHCA = age(2 + 2 * max(0, floor((age-20)/10))) + preexisting_renal_insufficiency(yes 8) + time_of_day(day_0700_1459 0, evening_1500_2259 4, night_2300_0659 13) + illness_category(medical_noncardiac 0, medical_cardiac -2, surgical_noncardiac -6, surgical_cardiac -11) + presenting_rhythm(asystole 0, pea -1, pvt -5, vf -8, palpable_pulse_initially -5) + duration_min(2 * floor(duration_min/10)); Tonna 2022 Table 2; theoretical min -17; paper text about -15 to >40; higher score → higher probability of in-hospital death (Figure 3 curve 0.22-0.99); integer score only"
},
{
"score": -17,
"formula": "rescue_ihca",
"citation": {
"id": "tonna-2022",
"doi": "10.1016/j.jcin.2021.09.032",
"pmid": "35033471",
"title": "Resuscitation Using ECPR During In-Hospital Cardiac Arrest (RESCUE-IHCA) Mortality Prediction Score and External Validation",
"source": "JACC Cardiovasc Interv. 2022;15(3):237-247",
"authors": "Tonna JE, Selzman CH, Girotra S, et al."
},
"min_score": -17,
"components": [
{
"value": 20,
"factor": "age",
"points": 2,
"present": true
},
{
"factor": "preexisting_renal_insufficiency",
"points": 0,
"present": false
},
{
"value": "day_0700_1459",
"factor": "time_of_day",
"points": 0,
"present": false
},
{
"value": "surgical_cardiac",
"factor": "illness_category",
"points": -11,
"present": true
},
{
"value": "vf",
"factor": "presenting_rhythm",
"points": -8,
"present": true
},
{
"value": 0,
"factor": "duration_min",
"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.",
"formula_expression": "RESCUE-IHCA = age(2 + 2 * max(0, floor((age-20)/10))) + preexisting_renal_insufficiency(yes 8) + time_of_day(day_0700_1459 0, evening_1500_2259 4, night_2300_0659 13) + illness_category(medical_noncardiac 0, medical_cardiac -2, surgical_noncardiac -6, surgical_cardiac -11) + presenting_rhythm(asystole 0, pea -1, pvt -5, vf -8, palpable_pulse_initially -5) + duration_min(2 * floor(duration_min/10)); Tonna 2022 Table 2; theoretical min -17; paper text about -15 to >40; higher score → higher probability of in-hospital death (Figure 3 curve 0.22-0.99); integer score only"
}
]
}
},
"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",
"preexisting_renal_insufficiency",
"time_of_day",
"illness_category",
"presenting_rhythm",
"duration_min"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). Tonna 2022 Table 2: ≤20 → 2; each additional 10 years → +2, implemented as 2 + 2 * max(0, floor((age-20)/10)) so 20 → 2, 29 → 2, 30 → 4, 40 → 6. Adult derivation (excluded age <18). Caller-supplied; magent does not examine the patient."
},
"time_of_day": {
"type": "string",
"description": "Time of day of arrest (Tonna 2022 Table 2). day_0700_1459 (07:00-14:59, reference) → 0; evening_1500_2259 (15:00-22:59) → +4; night_2300_0659 (23:00-06:59) → +13. Caller-assigned; magent does not read a clock."
},
"duration_min": {
"type": "integer",
"description": "Duration of cardiac arrest in integer minutes (0-180). Tonna 2022 Table 2: +2 per complete 10 minutes (2 * floor(duration_min/10)). 0-9 → 0; 10-19 → +2; 20-29 → +4. Caller-supplied; magent does not time the arrest."
},
"illness_category": {
"type": "string",
"description": "Illness category (Tonna 2022 Table 2). medical_noncardiac (reference) → 0; medical_cardiac → -2; surgical_noncardiac → -6; surgical_cardiac → -11. Caller-assigned; magent does not classify the admission."
},
"presenting_rhythm": {
"type": "string",
"description": "Presenting rhythm (Tonna 2022 Table 2). asystole (reference) → 0; pea → -1; pvt → -5; vf → -8; palpable_pulse_initially → -5. Caller-assigned; magent does not interpret a monitor."
},
"preexisting_renal_insufficiency": {
"type": "boolean",
"description": "Preexisting renal insufficiency as assigned by the caller (Tonna 2022 Table 2). true → +8. false → 0. magent does not grade 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 11:46Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 02:45Z
- 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. 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/rescue_ihca, 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.