magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
TradingLiveeip155:8453Exactvia cdp
HacorNivRespiratoryHypoxemiaCalculator
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 12:57Z
—
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/hacor",
"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/hacor",
"tags": [
"hacor",
"niv",
"respiratory",
"hypoxemia",
"calculator"
],
"mimeType": "application/json",
"description": "Duan 2017 HACOR (ESM Table 2): HR ≤120 → 0, ≥121 → 1; pH ≥7.35 → 0, 7.30–7.34 → 2, 7.25–7.29 → 3, <7.25 → 4; GCS 15 → 0, 13–14 → 2, 11–12 → 5, ≤10 → 10; P/F ≥201 → 0, 176–200 → 2, 151–175 → 3, 126–150 → 4, 101–125 → 5, ≤100 → 6; RR ≤30 → 0, 31–35 → 1, 36–40 → 2, 41–45 → 3, ≥46 → 4. Max 25. Low ≤5, high >5. Not an intubation or NIV-failure order. magent does not read an ABG, GCS the patient, or a ventilator.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"ph": 7.4,
"gcs": 15,
"pf_ratio": 300,
"heart_rate_bpm": 80,
"respiratory_rate": 18
}
},
"output": {
"type": "json",
"example": {
"ph": 7.4,
"gcs": 15,
"score": 0,
"formula": "hacor",
"citation": {
"id": "duan-2017",
"doi": "10.1007/s00134-016-4601-3",
"pmid": "27812731",
"title": "Assessment of heart rate, acidosis, consciousness, oxygenation, and respiratory rate to predict noninvasive ventilation failure in hypoxemic patients",
"source": "Intensive Care Med. 2017;43(2):192-199",
"authors": "Duan J, Han X, Bai L, Zhou L, Huang S"
},
"pf_ratio": 300,
"max_score": 25,
"components": [
{
"value": 80,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": 7.4,
"factor": "ph",
"points": 0,
"present": false
},
{
"value": 15,
"factor": "gcs",
"points": 0,
"present": false
},
{
"value": 300,
"factor": "pf_ratio",
"points": 0,
"present": false
},
{
"value": 18,
"factor": "respiratory_rate",
"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.",
"hacor_band": "low",
"heart_rate_bpm": 80,
"respiratory_rate": 18,
"formula_expression": "HACOR = HR(≤120→0, ≥121→1) + pH(≥7.35→0, 7.30–7.34→2, 7.25–7.29→3, <7.25→4) + GCS(15→0, 13–14→2, 11–12→5, ≤10→10) + P/F(≥201→0, 176–200→2, 151–175→3, 126–150→4, 101–125→5, ≤100→6) + RR(≤30→0, 31–35→1, 36–40→2, 41–45→3, ≥46→4); Duan 2017 ESM Table 2; max 25; low ≤5, high >5"
}
},
"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": [
"heart_rate_bpm",
"ph",
"gcs",
"pf_ratio",
"respiratory_rate"
],
"properties": {
"ph": {
"type": "number",
"description": "Arterial pH (6.80-7.80). Duan 2017 ESM Table 2: ≥7.35 → 0, 7.30-7.34 → 2, 7.25-7.29 → 3, <7.25 → 4. magent does not read an ABG."
},
"gcs": {
"type": "integer",
"description": "Total Glasgow Coma Scale 3-15 as assigned by the caller. Duan 2017 ESM Table 2: 15 → 0, 13-14 → 2, 11-12 → 5, ≤10 → 10. Not a GCS 10-12 / ≤9 table. magent does not GCS the patient."
},
"pf_ratio": {
"type": "number",
"description": "PaO2/FiO2 ratio (20-800). Duan 2017 ESM Table 2: ≥201 → 0, 176-200 → 2, 151-175 → 3, 126-150 → 4, 101-125 → 5, ≤100 → 6. magent does not read an ABG or a ventilator."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats/min (integer 30-220). Duan 2017 ESM Table 2: ≤120 → 0, ≥121 → 1."
},
"respiratory_rate": {
"type": "integer",
"description": "Respiratory rate in breaths/min (integer 4-80). Duan 2017 ESM Table 2: ≤30 → 0, 31-35 → 1, 36-40 → 2, 41-45 → 3, ≥46 → 4."
}
}
}
},
"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/hacor",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"ph": 7.4,
"gcs": 15,
"pf_ratio": 300,
"heart_rate_bpm": 80,
"respiratory_rate": 18
},
{
"ph": 7.4,
"gcs": 15,
"pf_ratio": 300,
"heart_rate_bpm": 80,
"respiratory_rate": 18
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/hacor",
"count": 2,
"items": [
{
"ph": 7.4,
"gcs": 15,
"score": 0,
"formula": "hacor",
"citation": {
"id": "duan-2017",
"doi": "10.1007/s00134-016-4601-3",
"pmid": "27812731",
"title": "Assessment of heart rate, acidosis, consciousness, oxygenation, and respiratory rate to predict noninvasive ventilation failure in hypoxemic patients",
"source": "Intensive Care Med. 2017;43(2):192-199",
"authors": "Duan J, Han X, Bai L, Zhou L, Huang S"
},
"pf_ratio": 300,
"max_score": 25,
"components": [
{
"value": 80,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": 7.4,
"factor": "ph",
"points": 0,
"present": false
},
{
"value": 15,
"factor": "gcs",
"points": 0,
"present": false
},
{
"value": 300,
"factor": "pf_ratio",
"points": 0,
"present": false
},
{
"value": 18,
"factor": "respiratory_rate",
"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.",
"hacor_band": "low",
"heart_rate_bpm": 80,
"respiratory_rate": 18,
"formula_expression": "HACOR = HR(≤120→0, ≥121→1) + pH(≥7.35→0, 7.30–7.34→2, 7.25–7.29→3, <7.25→4) + GCS(15→0, 13–14→2, 11–12→5, ≤10→10) + P/F(≥201→0, 176–200→2, 151–175→3, 126–150→4, 101–125→5, ≤100→6) + RR(≤30→0, 31–35→1, 36–40→2, 41–45→3, ≥46→4); Duan 2017 ESM Table 2; max 25; low ≤5, high >5"
},
{
"ph": 7.4,
"gcs": 15,
"score": 0,
"formula": "hacor",
"citation": {
"id": "duan-2017",
"doi": "10.1007/s00134-016-4601-3",
"pmid": "27812731",
"title": "Assessment of heart rate, acidosis, consciousness, oxygenation, and respiratory rate to predict noninvasive ventilation failure in hypoxemic patients",
"source": "Intensive Care Med. 2017;43(2):192-199",
"authors": "Duan J, Han X, Bai L, Zhou L, Huang S"
},
"pf_ratio": 300,
"max_score": 25,
"components": [
{
"value": 80,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": 7.4,
"factor": "ph",
"points": 0,
"present": false
},
{
"value": 15,
"factor": "gcs",
"points": 0,
"present": false
},
{
"value": 300,
"factor": "pf_ratio",
"points": 0,
"present": false
},
{
"value": 18,
"factor": "respiratory_rate",
"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.",
"hacor_band": "low",
"heart_rate_bpm": 80,
"respiratory_rate": 18,
"formula_expression": "HACOR = HR(≤120→0, ≥121→1) + pH(≥7.35→0, 7.30–7.34→2, 7.25–7.29→3, <7.25→4) + GCS(15→0, 13–14→2, 11–12→5, ≤10→10) + P/F(≥201→0, 176–200→2, 151–175→3, 126–150→4, 101–125→5, ≤100→6) + RR(≤30→0, 31–35→1, 36–40→2, 41–45→3, ≥46→4); Duan 2017 ESM Table 2; max 25; low ≤5, high >5"
}
]
}
},
"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": [
"heart_rate_bpm",
"ph",
"gcs",
"pf_ratio",
"respiratory_rate"
],
"properties": {
"ph": {
"type": "number",
"description": "Arterial pH (6.80-7.80). Duan 2017 ESM Table 2: ≥7.35 → 0, 7.30-7.34 → 2, 7.25-7.29 → 3, <7.25 → 4. magent does not read an ABG."
},
"gcs": {
"type": "integer",
"description": "Total Glasgow Coma Scale 3-15 as assigned by the caller. Duan 2017 ESM Table 2: 15 → 0, 13-14 → 2, 11-12 → 5, ≤10 → 10. Not a GCS 10-12 / ≤9 table. magent does not GCS the patient."
},
"pf_ratio": {
"type": "number",
"description": "PaO2/FiO2 ratio (20-800). Duan 2017 ESM Table 2: ≥201 → 0, 176-200 → 2, 151-175 → 3, 126-150 → 4, 101-125 → 5, ≤100 → 6. magent does not read an ABG or a ventilator."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats/min (integer 30-220). Duan 2017 ESM Table 2: ≤120 → 0, ≥121 → 1."
},
"respiratory_rate": {
"type": "integer",
"description": "Respiratory rate in breaths/min (integer 4-80). Duan 2017 ESM Table 2: ≤30 → 0, 31-35 → 1, 36-40 → 2, 41-45 → 3, ≥46 → 4."
}
}
},
"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 12:57Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 05:46Z
- 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. 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/hacor, 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.