magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
DataLiveeip155:8453Exactvia cdp
PewsEarly-warningEmergencyPaediatricCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 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 2026-08-31 13:28Z
—
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/pews",
"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"
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"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
],
"resource": {
"url": "https://api.magentlab.com/api/calc/pews",
"tags": [
"pews",
"early-warning",
"emergency",
"paediatric",
"calculator"
],
"mimeType": "application/json",
"description": "Monaghan 2005 Brighton PEWS: behaviour, cardiovascular, and respiratory 0-3 each, plus +2 each for quarter-hourly nebulisers and persistent post-surgery vomiting (max 13). HR/RR use APLS 2005 age-group rest ranges as the paper's normal rate and mean. Returns score_ge_3. Not NEWS2; not MEWS; not Bedside PEWS.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"oxygen": "none",
"behavior": "playing",
"age_group": "infant",
"cardiovascular": "pink",
"heart_rate_bpm": 130,
"respiratory_rate": 35,
"respiratory_effort": "none",
"quarter_hourly_nebulisers": false,
"persistent_vomiting_after_surgery": false
}
},
"output": {
"type": "json",
"example": {
"score": 0,
"oxygen": "none",
"formula": "pews",
"behavior": "playing",
"citation": {
"id": "monaghan-2005",
"doi": "10.7748/paed2005.02.17.1.32.c964",
"pmid": "15751446",
"title": "Detecting and managing deterioration in children",
"source": "Paediatr Nurs. 2005;17(1):32-35",
"authors": "Monaghan A"
},
"age_group": "infant",
"max_score": 13,
"components": [
{
"value": "playing",
"factor": "behavior",
"points": 0,
"present": false
},
{
"value": "pink",
"factor": "cardiovascular",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "respiratory",
"points": 0,
"present": false
},
{
"factor": "quarter_hourly_nebulisers",
"points": 0,
"present": false
},
{
"factor": "persistent_vomiting_after_surgery",
"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.",
"score_ge_3": false,
"cardiovascular": "pink",
"heart_rate_bpm": 130,
"respiratory_rate": 35,
"formula_expression": "PEWS = behavior_points + cardiovascular_points + respiratory_points + nebuliser_points + vomiting_points; Monaghan 2005 Brighton table (each domain 0-3; extra +2 each for quarter-hourly nebulisers and persistent vomiting following surgery); max 13",
"respiratory_effort": "none",
"quarter_hourly_nebulisers": false,
"persistent_vomiting_after_surgery": false
}
},
"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_group",
"behavior",
"cardiovascular",
"heart_rate_bpm",
"respiratory_rate",
"respiratory_effort",
"oxygen",
"quarter_hourly_nebulisers",
"persistent_vomiting_after_surgery"
],
"properties": {
"oxygen": {
"enum": [
"none",
"fio2_30_or_4l",
"fio2_40_or_6l",
"fio2_50_or_8l"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 oxygen. none → 0; fio2_30_or_4l (30+% FiO2 or 4+ L/min) → 1; fio2_40_or_6l (40+% FiO2 or 6+ L/min) → 2; fio2_50_or_8l (50% FiO2 or 8+ L/min) → 3. The respiratory domain is the higher of RR, effort, and oxygen. magent does not measure FiO2."
},
"behavior": {
"enum": [
"playing",
"sleeping",
"irritable",
"lethargic"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 behaviour. playing (playing/appropriate) → 0; sleeping → 1; irritable (irritable or parents concerned) → 2; lethargic (lethargic/confused or reduced response to pain) → 3. magent does not observe the child."
},
"age_group": {
"enum": [
"infant",
"age_1_2",
"age_2_5",
"age_5_12",
"adolescent"
],
"type": "string",
"description": "Caller-assigned APLS 2005 rest-range age group used as Monaghan 2005 'normal rate' (HR) and 'mean'/'normal parameters' (RR). infant (<1 year; HR 110-160, RR 30-40, RR mean 35); age_1_2 (1-2 years; HR 100-150, RR 25-35, mean 30); age_2_5 (2-5 years; HR 95-140, RR 25-30, mean 27); age_5_12 (5-12 years; HR 80-120, RR 20-25, mean 22); adolescent (>12 years; HR 60-100, RR 15-20, mean 17). Monaghan 2005 does not print a numeric vital table. magent does not map chronological age. Not Akre 2010. Not later NHS England PEWS charts."
},
"cardiovascular": {
"enum": [
"pink",
"pale",
"grey",
"mottled"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 colour or capillary refill. pink (pink or CRT 1-2 s) → 0; pale (pale or CRT 3 s) → 1; grey (grey or CRT 4 s) → 2; mottled (grey and mottled or CRT ≥5 s) → 3. The cardiovascular domain is the higher of this band and the HR band. magent does not measure CRT."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats/min (integer 40-300). Monaghan 2005: tachycardia of 20 above the age-group normal rate (APLS 2005 upper rest limit) → 2; tachycardia of 30 above that rate or bradycardia (below the APLS lower rest limit) → 3. The cardiovascular domain is the higher of colour/CRT and HR. magent does not measure heart rate."
},
"respiratory_rate": {
"type": "integer",
"description": "Respiratory rate in breaths/min (integer 5-120). Monaghan 2005 vs the age-group RR mean (midpoint of the APLS 2005 rest range): >10 above mean → 1; >20 above mean → 2; >30 above mean or 5 below mean → 3. The respiratory domain is the higher of RR, effort, and oxygen. magent does not measure respiratory rate."
},
"respiratory_effort": {
"enum": [
"none",
"accessory",
"recessing",
"sternal_or_grunting"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 respiratory effort. none (no recession or tracheal tug) → 0; accessory (using accessory muscles) → 1; recessing (recessing, tracheal tug) → 2; sternal_or_grunting (sternal recession, tracheal tug, or grunting) → 3. The respiratory domain is the higher of RR, effort, and oxygen. magent does not examine the chest."
},
"quarter_hourly_nebulisers": {
"type": "boolean",
"description": "Quarter-hourly (¼ hourly) nebulisers as in Monaghan 2005. true → +2; false → 0. Independent of the respiratory 0-3 domain. magent does not record medication times."
},
"persistent_vomiting_after_surgery": {
"type": "boolean",
"description": "Persistent vomiting following surgery as in Monaghan 2005. true → +2; false → 0. Independent of the behaviour 0-3 domain. magent does not observe vomiting."
}
}
}
},
"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/pews",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"oxygen": "none",
"behavior": "playing",
"age_group": "infant",
"cardiovascular": "pink",
"heart_rate_bpm": 130,
"respiratory_rate": 35,
"respiratory_effort": "none",
"quarter_hourly_nebulisers": false,
"persistent_vomiting_after_surgery": false
},
{
"oxygen": "none",
"behavior": "playing",
"age_group": "infant",
"cardiovascular": "pink",
"heart_rate_bpm": 130,
"respiratory_rate": 35,
"respiratory_effort": "none",
"quarter_hourly_nebulisers": false,
"persistent_vomiting_after_surgery": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/pews",
"count": 2,
"items": [
{
"score": 0,
"oxygen": "none",
"formula": "pews",
"behavior": "playing",
"citation": {
"id": "monaghan-2005",
"doi": "10.7748/paed2005.02.17.1.32.c964",
"pmid": "15751446",
"title": "Detecting and managing deterioration in children",
"source": "Paediatr Nurs. 2005;17(1):32-35",
"authors": "Monaghan A"
},
"age_group": "infant",
"max_score": 13,
"components": [
{
"value": "playing",
"factor": "behavior",
"points": 0,
"present": false
},
{
"value": "pink",
"factor": "cardiovascular",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "respiratory",
"points": 0,
"present": false
},
{
"factor": "quarter_hourly_nebulisers",
"points": 0,
"present": false
},
{
"factor": "persistent_vomiting_after_surgery",
"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.",
"score_ge_3": false,
"cardiovascular": "pink",
"heart_rate_bpm": 130,
"respiratory_rate": 35,
"formula_expression": "PEWS = behavior_points + cardiovascular_points + respiratory_points + nebuliser_points + vomiting_points; Monaghan 2005 Brighton table (each domain 0-3; extra +2 each for quarter-hourly nebulisers and persistent vomiting following surgery); max 13",
"respiratory_effort": "none",
"quarter_hourly_nebulisers": false,
"persistent_vomiting_after_surgery": false
},
{
"score": 0,
"oxygen": "none",
"formula": "pews",
"behavior": "playing",
"citation": {
"id": "monaghan-2005",
"doi": "10.7748/paed2005.02.17.1.32.c964",
"pmid": "15751446",
"title": "Detecting and managing deterioration in children",
"source": "Paediatr Nurs. 2005;17(1):32-35",
"authors": "Monaghan A"
},
"age_group": "infant",
"max_score": 13,
"components": [
{
"value": "playing",
"factor": "behavior",
"points": 0,
"present": false
},
{
"value": "pink",
"factor": "cardiovascular",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "respiratory",
"points": 0,
"present": false
},
{
"factor": "quarter_hourly_nebulisers",
"points": 0,
"present": false
},
{
"factor": "persistent_vomiting_after_surgery",
"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.",
"score_ge_3": false,
"cardiovascular": "pink",
"heart_rate_bpm": 130,
"respiratory_rate": 35,
"formula_expression": "PEWS = behavior_points + cardiovascular_points + respiratory_points + nebuliser_points + vomiting_points; Monaghan 2005 Brighton table (each domain 0-3; extra +2 each for quarter-hourly nebulisers and persistent vomiting following surgery); max 13",
"respiratory_effort": "none",
"quarter_hourly_nebulisers": false,
"persistent_vomiting_after_surgery": false
}
]
}
},
"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_group",
"behavior",
"cardiovascular",
"heart_rate_bpm",
"respiratory_rate",
"respiratory_effort",
"oxygen",
"quarter_hourly_nebulisers",
"persistent_vomiting_after_surgery"
],
"properties": {
"oxygen": {
"enum": [
"none",
"fio2_30_or_4l",
"fio2_40_or_6l",
"fio2_50_or_8l"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 oxygen. none → 0; fio2_30_or_4l (30+% FiO2 or 4+ L/min) → 1; fio2_40_or_6l (40+% FiO2 or 6+ L/min) → 2; fio2_50_or_8l (50% FiO2 or 8+ L/min) → 3. The respiratory domain is the higher of RR, effort, and oxygen. magent does not measure FiO2."
},
"behavior": {
"enum": [
"playing",
"sleeping",
"irritable",
"lethargic"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 behaviour. playing (playing/appropriate) → 0; sleeping → 1; irritable (irritable or parents concerned) → 2; lethargic (lethargic/confused or reduced response to pain) → 3. magent does not observe the child."
},
"age_group": {
"enum": [
"infant",
"age_1_2",
"age_2_5",
"age_5_12",
"adolescent"
],
"type": "string",
"description": "Caller-assigned APLS 2005 rest-range age group used as Monaghan 2005 'normal rate' (HR) and 'mean'/'normal parameters' (RR). infant (<1 year; HR 110-160, RR 30-40, RR mean 35); age_1_2 (1-2 years; HR 100-150, RR 25-35, mean 30); age_2_5 (2-5 years; HR 95-140, RR 25-30, mean 27); age_5_12 (5-12 years; HR 80-120, RR 20-25, mean 22); adolescent (>12 years; HR 60-100, RR 15-20, mean 17). Monaghan 2005 does not print a numeric vital table. magent does not map chronological age. Not Akre 2010. Not later NHS England PEWS charts."
},
"cardiovascular": {
"enum": [
"pink",
"pale",
"grey",
"mottled"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 colour or capillary refill. pink (pink or CRT 1-2 s) → 0; pale (pale or CRT 3 s) → 1; grey (grey or CRT 4 s) → 2; mottled (grey and mottled or CRT ≥5 s) → 3. The cardiovascular domain is the higher of this band and the HR band. magent does not measure CRT."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Heart rate in beats/min (integer 40-300). Monaghan 2005: tachycardia of 20 above the age-group normal rate (APLS 2005 upper rest limit) → 2; tachycardia of 30 above that rate or bradycardia (below the APLS lower rest limit) → 3. The cardiovascular domain is the higher of colour/CRT and HR. magent does not measure heart rate."
},
"respiratory_rate": {
"type": "integer",
"description": "Respiratory rate in breaths/min (integer 5-120). Monaghan 2005 vs the age-group RR mean (midpoint of the APLS 2005 rest range): >10 above mean → 1; >20 above mean → 2; >30 above mean or 5 below mean → 3. The respiratory domain is the higher of RR, effort, and oxygen. magent does not measure respiratory rate."
},
"respiratory_effort": {
"enum": [
"none",
"accessory",
"recessing",
"sternal_or_grunting"
],
"type": "string",
"description": "Caller-assigned Monaghan 2005 respiratory effort. none (no recession or tracheal tug) → 0; accessory (using accessory muscles) → 1; recessing (recessing, tracheal tug) → 2; sternal_or_grunting (sternal recession, tracheal tug, or grunting) → 3. The respiratory domain is the higher of RR, effort, and oxygen. magent does not examine the chest."
},
"quarter_hourly_nebulisers": {
"type": "boolean",
"description": "Quarter-hourly (¼ hourly) nebulisers as in Monaghan 2005. true → +2; false → 0. Independent of the respiratory 0-3 domain. magent does not record medication times."
},
"persistent_vomiting_after_surgery": {
"type": "boolean",
"description": "Persistent vomiting following surgery as in Monaghan 2005. true → +2; false → 0. Independent of the behaviour 0-3 domain. magent does not observe vomiting."
}
}
},
"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 13:28Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-22 17:45Z
- 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. 10 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/pews, 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.