magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
SearchLiveeip155:8453Exactvia cdp
Brue-2EmergencyInfantNama-2022Calculator
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 09:21Z
—
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/brue_2",
"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/brue_2",
"tags": [
"brue-2",
"emergency",
"infant",
"nama-2022",
"calculator"
],
"mimeType": "application/json",
"description": "Nama 2022 Supplemental Table 7 logistic probabilities of a serious underlying diagnosis and of event recurrence after a brief resolved unexplained event from age in days, similar-event history, abnormal medical history, prematurity, event clusters, color change, abnormal breathing, and tone change. Returns logits and percents from the unrounded logits. Not a medical device. No admission cutoff. magent does not examine the infant.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age_days": 90,
"prematurity": false,
"tone_change": false,
"color_change": false,
"abnormal_medical_history": false,
"history_of_similar_event": false,
"history_of_event_clusters": false,
"abnormal_respiratory_pattern": false
}
},
"output": {
"type": "json",
"example": {
"formula": "brue_2",
"age_days": 90,
"citation": {
"id": "nama-2022",
"doi": "10.1542/hpeds.2022-006637",
"pmid": "35965279",
"title": "Risk Prediction After a Brief Resolved Unexplained Event",
"source": "Hosp Pediatr. 2022;12(9):772-785",
"authors": "Nama N, Hall M, Neuman M, et al."
},
"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.",
"prematurity": false,
"tone_change": false,
"color_change": false,
"formula_expression": "Ls = -3.75 + 0.56*history_of_similar_event + 0.65*abnormal_medical_history + 0.0025*age_days; Lr = -2.44 + 0.46*prematurity + 0.58*history_of_similar_event + 1.17*history_of_event_clusters + 0.36*color_change - 0.32*abnormal_respiratory_pattern - 0.31*tone_change (Nama 2022 Supplemental Table 7); estimated_serious_diagnosis_percent = 100 * exp(Ls) / (1 + exp(Ls)); estimated_event_recurrence_percent = 100 * exp(Lr) / (1 + exp(Lr))",
"event_recurrence_logit": -2.44,
"serious_diagnosis_logit": -3.525,
"abnormal_medical_history": false,
"history_of_similar_event": false,
"history_of_event_clusters": false,
"abnormal_respiratory_pattern": false,
"estimated_event_recurrence_percent": 8.02,
"estimated_serious_diagnosis_percent": 2.86
}
},
"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_days",
"history_of_similar_event",
"abnormal_medical_history",
"prematurity",
"history_of_event_clusters",
"color_change",
"abnormal_respiratory_pattern",
"tone_change"
],
"properties": {
"age_days": {
"type": "integer",
"description": "Age in days (0-364). Nama 2022 Supplemental Table 7 serious-diagnosis model: +0.0025 per day. Recurrence model does not use age. magent does not examine the infant."
},
"prematurity": {
"type": "boolean",
"description": "Prematurity as published: born <32 weeks, or born between 32 and 38 weeks and corrected to <45 weeks (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence +0.46."
},
"tone_change": {
"type": "boolean",
"description": "Marked change in tone (hypertonia or hypotonia) during the event (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence -0.31."
},
"color_change": {
"type": "boolean",
"description": "Color change (cyanosis or pallor) during the event (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence +0.36. magent does not examine the infant."
},
"abnormal_medical_history": {
"type": "boolean",
"description": "Abnormal medical history such as previous hospitalization or an underlying medical condition (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Serious-diagnosis +0.65. Recurrence model does not use this flag."
},
"history_of_similar_event": {
"type": "boolean",
"description": "History of a similar event before the index presentation (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Serious-diagnosis +0.56; recurrence +0.58. magent does not examine the infant."
},
"history_of_event_clusters": {
"type": "boolean",
"description": "History of multiple events or event clusters before presentation (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence +1.17."
},
"abnormal_respiratory_pattern": {
"type": "boolean",
"description": "Abnormal respiratory pattern (absent, decreased, or irregular breathing) during the event (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence -0.32."
}
}
}
},
"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/brue_2",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age_days": 90,
"prematurity": false,
"tone_change": false,
"color_change": false,
"abnormal_medical_history": false,
"history_of_similar_event": false,
"history_of_event_clusters": false,
"abnormal_respiratory_pattern": false
},
{
"age_days": 90,
"prematurity": false,
"tone_change": false,
"color_change": false,
"abnormal_medical_history": false,
"history_of_similar_event": false,
"history_of_event_clusters": false,
"abnormal_respiratory_pattern": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/brue_2",
"count": 2,
"items": [
{
"formula": "brue_2",
"age_days": 90,
"citation": {
"id": "nama-2022",
"doi": "10.1542/hpeds.2022-006637",
"pmid": "35965279",
"title": "Risk Prediction After a Brief Resolved Unexplained Event",
"source": "Hosp Pediatr. 2022;12(9):772-785",
"authors": "Nama N, Hall M, Neuman M, et al."
},
"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.",
"prematurity": false,
"tone_change": false,
"color_change": false,
"formula_expression": "Ls = -3.75 + 0.56*history_of_similar_event + 0.65*abnormal_medical_history + 0.0025*age_days; Lr = -2.44 + 0.46*prematurity + 0.58*history_of_similar_event + 1.17*history_of_event_clusters + 0.36*color_change - 0.32*abnormal_respiratory_pattern - 0.31*tone_change (Nama 2022 Supplemental Table 7); estimated_serious_diagnosis_percent = 100 * exp(Ls) / (1 + exp(Ls)); estimated_event_recurrence_percent = 100 * exp(Lr) / (1 + exp(Lr))",
"event_recurrence_logit": -2.44,
"serious_diagnosis_logit": -3.525,
"abnormal_medical_history": false,
"history_of_similar_event": false,
"history_of_event_clusters": false,
"abnormal_respiratory_pattern": false,
"estimated_event_recurrence_percent": 8.02,
"estimated_serious_diagnosis_percent": 2.86
},
{
"formula": "brue_2",
"age_days": 90,
"citation": {
"id": "nama-2022",
"doi": "10.1542/hpeds.2022-006637",
"pmid": "35965279",
"title": "Risk Prediction After a Brief Resolved Unexplained Event",
"source": "Hosp Pediatr. 2022;12(9):772-785",
"authors": "Nama N, Hall M, Neuman M, et al."
},
"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.",
"prematurity": false,
"tone_change": false,
"color_change": false,
"formula_expression": "Ls = -3.75 + 0.56*history_of_similar_event + 0.65*abnormal_medical_history + 0.0025*age_days; Lr = -2.44 + 0.46*prematurity + 0.58*history_of_similar_event + 1.17*history_of_event_clusters + 0.36*color_change - 0.32*abnormal_respiratory_pattern - 0.31*tone_change (Nama 2022 Supplemental Table 7); estimated_serious_diagnosis_percent = 100 * exp(Ls) / (1 + exp(Ls)); estimated_event_recurrence_percent = 100 * exp(Lr) / (1 + exp(Lr))",
"event_recurrence_logit": -2.44,
"serious_diagnosis_logit": -3.525,
"abnormal_medical_history": false,
"history_of_similar_event": false,
"history_of_event_clusters": false,
"abnormal_respiratory_pattern": false,
"estimated_event_recurrence_percent": 8.02,
"estimated_serious_diagnosis_percent": 2.86
}
]
}
},
"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_days",
"history_of_similar_event",
"abnormal_medical_history",
"prematurity",
"history_of_event_clusters",
"color_change",
"abnormal_respiratory_pattern",
"tone_change"
],
"properties": {
"age_days": {
"type": "integer",
"description": "Age in days (0-364). Nama 2022 Supplemental Table 7 serious-diagnosis model: +0.0025 per day. Recurrence model does not use age. magent does not examine the infant."
},
"prematurity": {
"type": "boolean",
"description": "Prematurity as published: born <32 weeks, or born between 32 and 38 weeks and corrected to <45 weeks (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence +0.46."
},
"tone_change": {
"type": "boolean",
"description": "Marked change in tone (hypertonia or hypotonia) during the event (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence -0.31."
},
"color_change": {
"type": "boolean",
"description": "Color change (cyanosis or pallor) during the event (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence +0.36. magent does not examine the infant."
},
"abnormal_medical_history": {
"type": "boolean",
"description": "Abnormal medical history such as previous hospitalization or an underlying medical condition (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Serious-diagnosis +0.65. Recurrence model does not use this flag."
},
"history_of_similar_event": {
"type": "boolean",
"description": "History of a similar event before the index presentation (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Serious-diagnosis +0.56; recurrence +0.58. magent does not examine the infant."
},
"history_of_event_clusters": {
"type": "boolean",
"description": "History of multiple events or event clusters before presentation (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence +1.17."
},
"abnormal_respiratory_pattern": {
"type": "boolean",
"description": "Abnormal respiratory pattern (absent, decreased, or irregular breathing) during the event (Nama 2022 Supplemental Table 7). true or false as assigned by the caller. Recurrence -0.32."
}
}
},
"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 09:21Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 07:15Z
- 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. 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/brue_2, 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.