magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Searchofflineeip155:8453Exactvia cdp
Pecarn-iaiPediatricAbdominalEmergencyTrauma
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-31 13:22Z
—
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/pecarn_iai",
"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/pecarn_iai",
"tags": [
"pecarn-iai",
"pediatric",
"abdominal",
"emergency",
"trauma"
],
"mimeType": "application/json",
"description": "PECARN pediatric IAI (Holmes 2013). Very low risk of IAI requiring acute intervention only when all seven caller-assigned findings are absent: abdominal wall trauma or seatbelt sign, GCS <14, abdominal tenderness, thoracic wall trauma, abdominal pain, decreased breath sounds, and vomiting. Presence of a criterion does not mandate CT. Not a diagnosis. Not PECARN head. magent does not examine the patient.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"vomiting": false,
"abdominal_pain": false,
"gcs_less_than_14": false,
"abdominal_tenderness": false,
"thoracic_wall_trauma": false,
"decreased_breath_sounds": false,
"abdominal_wall_trauma_or_seatbelt_sign": false
}
},
"output": {
"type": "json",
"example": {
"formula": "pecarn_iai",
"citation": {
"id": "holmes-2013",
"doi": "10.1016/j.annemergmed.2012.11.009",
"title": "Identifying children at very low risk of clinically important blunt abdominal injuries",
"source": "Ann Emerg Med. 2013;62(2):107-116.e2",
"authors": "Holmes JF, Lillis K, Monroe D, Borgialli D, Kerrey BT, Mahajan P, Adelgais K, Ellison AM, Yen K, Atabaki S, Menaker J, Bonsu B, Quayle KS, Garcia M, Rogers A, Blumberg S, Lee L, Tunik M, Kooistra J, Kwok M, Cook LJ, Dean JM, Sokolove PE, Wisner DH, Ehrlich P, Cooper A, Dayan PS, Wootton-Gorges S, Kuppermann N"
},
"criteria": [
{
"met": true,
"factor": "no_abdominal_wall_trauma_or_seatbelt_sign"
},
{
"met": true,
"factor": "no_gcs_less_than_14"
},
{
"met": true,
"factor": "no_abdominal_tenderness"
},
{
"met": true,
"factor": "no_thoracic_wall_trauma"
},
{
"met": true,
"factor": "no_abdominal_pain"
},
{
"met": true,
"factor": "no_decreased_breath_sounds"
},
{
"met": true,
"factor": "no_vomiting"
}
],
"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": "very_low_risk_iai_intervention iff no abdominal_wall_trauma_or_seatbelt_sign and no gcs_less_than_14 and no abdominal_tenderness and no thoracic_wall_trauma and no abdominal_pain and no decreased_breath_sounds and no vomiting",
"very_low_risk_iai_intervention": true
}
},
"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": [
"abdominal_wall_trauma_or_seatbelt_sign",
"gcs_less_than_14",
"abdominal_tenderness",
"thoracic_wall_trauma",
"abdominal_pain",
"decreased_breath_sounds",
"vomiting"
],
"properties": {
"vomiting": {
"type": "boolean",
"description": "History of vomiting as assigned by the caller. true means vomiting is present and very_low_risk_iai_intervention is false. true or false. magent does not take a vomit count."
},
"abdominal_pain": {
"type": "boolean",
"description": "Complaints of abdominal pain as assigned by the caller. true means pain is present and very_low_risk_iai_intervention is false. true or false. magent does not take a pain score."
},
"gcs_less_than_14": {
"type": "boolean",
"description": "GCS score <14 as assigned by the caller (paper: GCS <14; equivalently GCS >13 is the low-risk direction). true means GCS <14 and very_low_risk_iai_intervention is false. true or false. This is not the PECARN head GCS <=14 flag. magent does not take a GCS integer."
},
"abdominal_tenderness": {
"type": "boolean",
"description": "Abdominal tenderness as assigned by the caller. true means tenderness is present and very_low_risk_iai_intervention is false. true or false. magent does not palpate the abdomen."
},
"thoracic_wall_trauma": {
"type": "boolean",
"description": "Evidence of thoracic wall trauma as assigned by the caller. true means the finding is present and very_low_risk_iai_intervention is false. true or false. magent does not examine the chest."
},
"decreased_breath_sounds": {
"type": "boolean",
"description": "Decreased breath sounds as assigned by the caller. true means decreased breath sounds are present and very_low_risk_iai_intervention is false. true or false. magent does not auscultate the chest."
},
"abdominal_wall_trauma_or_seatbelt_sign": {
"type": "boolean",
"description": "Evidence of abdominal wall trauma or seatbelt sign as assigned by the caller (Holmes 2013 first-ranked criterion). true means the finding is present and very_low_risk_iai_intervention is false. true or false. magent does not examine the abdomen."
}
}
}
},
"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/pecarn_iai",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"vomiting": false,
"abdominal_pain": false,
"gcs_less_than_14": false,
"abdominal_tenderness": false,
"thoracic_wall_trauma": false,
"decreased_breath_sounds": false,
"abdominal_wall_trauma_or_seatbelt_sign": false
},
{
"vomiting": false,
"abdominal_pain": false,
"gcs_less_than_14": false,
"abdominal_tenderness": false,
"thoracic_wall_trauma": false,
"decreased_breath_sounds": false,
"abdominal_wall_trauma_or_seatbelt_sign": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/pecarn_iai",
"count": 2,
"items": [
{
"formula": "pecarn_iai",
"citation": {
"id": "holmes-2013",
"doi": "10.1016/j.annemergmed.2012.11.009",
"title": "Identifying children at very low risk of clinically important blunt abdominal injuries",
"source": "Ann Emerg Med. 2013;62(2):107-116.e2",
"authors": "Holmes JF, Lillis K, Monroe D, Borgialli D, Kerrey BT, Mahajan P, Adelgais K, Ellison AM, Yen K, Atabaki S, Menaker J, Bonsu B, Quayle KS, Garcia M, Rogers A, Blumberg S, Lee L, Tunik M, Kooistra J, Kwok M, Cook LJ, Dean JM, Sokolove PE, Wisner DH, Ehrlich P, Cooper A, Dayan PS, Wootton-Gorges S, Kuppermann N"
},
"criteria": [
{
"met": true,
"factor": "no_abdominal_wall_trauma_or_seatbelt_sign"
},
{
"met": true,
"factor": "no_gcs_less_than_14"
},
{
"met": true,
"factor": "no_abdominal_tenderness"
},
{
"met": true,
"factor": "no_thoracic_wall_trauma"
},
{
"met": true,
"factor": "no_abdominal_pain"
},
{
"met": true,
"factor": "no_decreased_breath_sounds"
},
{
"met": true,
"factor": "no_vomiting"
}
],
"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": "very_low_risk_iai_intervention iff no abdominal_wall_trauma_or_seatbelt_sign and no gcs_less_than_14 and no abdominal_tenderness and no thoracic_wall_trauma and no abdominal_pain and no decreased_breath_sounds and no vomiting",
"very_low_risk_iai_intervention": true
},
{
"formula": "pecarn_iai",
"citation": {
"id": "holmes-2013",
"doi": "10.1016/j.annemergmed.2012.11.009",
"title": "Identifying children at very low risk of clinically important blunt abdominal injuries",
"source": "Ann Emerg Med. 2013;62(2):107-116.e2",
"authors": "Holmes JF, Lillis K, Monroe D, Borgialli D, Kerrey BT, Mahajan P, Adelgais K, Ellison AM, Yen K, Atabaki S, Menaker J, Bonsu B, Quayle KS, Garcia M, Rogers A, Blumberg S, Lee L, Tunik M, Kooistra J, Kwok M, Cook LJ, Dean JM, Sokolove PE, Wisner DH, Ehrlich P, Cooper A, Dayan PS, Wootton-Gorges S, Kuppermann N"
},
"criteria": [
{
"met": true,
"factor": "no_abdominal_wall_trauma_or_seatbelt_sign"
},
{
"met": true,
"factor": "no_gcs_less_than_14"
},
{
"met": true,
"factor": "no_abdominal_tenderness"
},
{
"met": true,
"factor": "no_thoracic_wall_trauma"
},
{
"met": true,
"factor": "no_abdominal_pain"
},
{
"met": true,
"factor": "no_decreased_breath_sounds"
},
{
"met": true,
"factor": "no_vomiting"
}
],
"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": "very_low_risk_iai_intervention iff no abdominal_wall_trauma_or_seatbelt_sign and no gcs_less_than_14 and no abdominal_tenderness and no thoracic_wall_trauma and no abdominal_pain and no decreased_breath_sounds and no vomiting",
"very_low_risk_iai_intervention": true
}
]
}
},
"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": [
"abdominal_wall_trauma_or_seatbelt_sign",
"gcs_less_than_14",
"abdominal_tenderness",
"thoracic_wall_trauma",
"abdominal_pain",
"decreased_breath_sounds",
"vomiting"
],
"properties": {
"vomiting": {
"type": "boolean",
"description": "History of vomiting as assigned by the caller. true means vomiting is present and very_low_risk_iai_intervention is false. true or false. magent does not take a vomit count."
},
"abdominal_pain": {
"type": "boolean",
"description": "Complaints of abdominal pain as assigned by the caller. true means pain is present and very_low_risk_iai_intervention is false. true or false. magent does not take a pain score."
},
"gcs_less_than_14": {
"type": "boolean",
"description": "GCS score <14 as assigned by the caller (paper: GCS <14; equivalently GCS >13 is the low-risk direction). true means GCS <14 and very_low_risk_iai_intervention is false. true or false. This is not the PECARN head GCS <=14 flag. magent does not take a GCS integer."
},
"abdominal_tenderness": {
"type": "boolean",
"description": "Abdominal tenderness as assigned by the caller. true means tenderness is present and very_low_risk_iai_intervention is false. true or false. magent does not palpate the abdomen."
},
"thoracic_wall_trauma": {
"type": "boolean",
"description": "Evidence of thoracic wall trauma as assigned by the caller. true means the finding is present and very_low_risk_iai_intervention is false. true or false. magent does not examine the chest."
},
"decreased_breath_sounds": {
"type": "boolean",
"description": "Decreased breath sounds as assigned by the caller. true means decreased breath sounds are present and very_low_risk_iai_intervention is false. true or false. magent does not auscultate the chest."
},
"abdominal_wall_trauma_or_seatbelt_sign": {
"type": "boolean",
"description": "Evidence of abdominal wall trauma or seatbelt sign as assigned by the caller (Holmes 2013 first-ranked criterion). true means the finding is present and very_low_risk_iai_intervention is false. true or false. magent does not examine the abdomen."
}
}
},
"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 13:22Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 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. 14 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/pecarn_iai, 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.