magent
Barber 2000 ASPECTS: 10 minus 1 for each caller-assigned MCA region with early ischemic change (C caudate, L lentiform, IC internal capsule, I insular ribbon, M1–M6). Score 0–10. Not pc-ASPECTS. magent does not read the CT. Not a diagnosis, lytic order, or medical device.
Tradingofflineeip155:8453Exactvia cdp
AspectsStrokeNeurologyBarberCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 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 2026-09-04 09:54Z
—
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/aspects",
"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/aspects",
"tags": [
"aspects",
"stroke",
"neurology",
"barber",
"calculator"
],
"mimeType": "application/json",
"description": "Barber 2000 ASPECTS: 10 minus 1 for each caller-assigned MCA region with early ischemic change (C caudate, L lentiform, IC internal capsule, I insular ribbon, M1–M6). Score 0–10. Not pc-ASPECTS. magent does not read the CT. Not a diagnosis, lytic order, or medical device.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"m1": false,
"m2": false,
"m3": false,
"m4": false,
"m5": false,
"m6": false,
"caudate": false,
"lentiform": false,
"insular_ribbon": false,
"internal_capsule": false
}
},
"output": {
"type": "json",
"example": {
"score": 10,
"formula": "aspects",
"citation": {
"id": "barber-2000-aspects",
"doi": "10.1016/S0140-6736(00)02237-6",
"pmid": "10905241",
"title": "Validity and reliability of a quantitative computed tomography score in predicting outcome of hyperacute stroke before thrombolytic therapy",
"source": "Lancet. 2000;355(9216):1670-1674",
"authors": "Barber PA, Demchuk AM, Zhang J, Buchan AM"
},
"max_score": 10,
"components": [
{
"factor": "caudate",
"points": 0,
"present": false
},
{
"factor": "lentiform",
"points": 0,
"present": false
},
{
"factor": "internal_capsule",
"points": 0,
"present": false
},
{
"factor": "insular_ribbon",
"points": 0,
"present": false
},
{
"factor": "m1",
"points": 0,
"present": false
},
{
"factor": "m2",
"points": 0,
"present": false
},
{
"factor": "m3",
"points": 0,
"present": false
},
{
"factor": "m4",
"points": 0,
"present": false
},
{
"factor": "m5",
"points": 0,
"present": false
},
{
"factor": "m6",
"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": "ASPECTS = 10 - (C + L + IC + I + M1 + M2 + M3 + M4 + M5 + M6); 1 point subtracted for caller-assigned early ischemic change (focal swelling or parenchymal hypoattenuation) in each published MCA-territory region; C=caudate, L=lentiform, IC=internal capsule, I=insular ribbon, M1=anterior MCA cortex, M2=MCA cortex lateral to insular ribbon, M3=posterior MCA cortex, M4/M5/M6=anterior/lateral/posterior MCA territories immediately superior to M1/M2/M3, rostral to basal ganglia; Barber 2000; score 0-10; not posterior-circulation pc-ASPECTS"
}
},
"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": [
"caudate",
"lentiform",
"internal_capsule",
"insular_ribbon",
"m1",
"m2",
"m3",
"m4",
"m5",
"m6"
],
"properties": {
"m1": {
"type": "boolean",
"description": "Anterior MCA cortex (M1). Caller-assigned early ischemic change in the published M1 region (Barber 2000). magent does not read the CT. true or false."
},
"m2": {
"type": "boolean",
"description": "MCA cortex lateral to insular ribbon (M2). Caller-assigned early ischemic change in the published M2 region (Barber 2000). magent does not read the CT. true or false."
},
"m3": {
"type": "boolean",
"description": "Posterior MCA cortex (M3). Caller-assigned early ischemic change in the published M3 region (Barber 2000). magent does not read the CT. true or false."
},
"m4": {
"type": "boolean",
"description": "Anterior MCA territory immediately superior to M1, rostral to basal ganglia (M4). Caller-assigned early ischemic change in the published M4 region (Barber 2000). magent does not read the CT. true or false."
},
"m5": {
"type": "boolean",
"description": "Lateral MCA territory immediately superior to M2, rostral to basal ganglia (M5). Caller-assigned early ischemic change in the published M5 region (Barber 2000). magent does not read the CT. true or false."
},
"m6": {
"type": "boolean",
"description": "Posterior MCA territory immediately superior to M3, rostral to basal ganglia (M6). Caller-assigned early ischemic change in the published M6 region (Barber 2000). magent does not read the CT. true or false."
},
"caudate": {
"type": "boolean",
"description": "Caudate (C). Caller-assigned early ischemic change in the published caudate region (Barber 2000). magent does not read the CT. true or false."
},
"lentiform": {
"type": "boolean",
"description": "Lentiform (L). Caller-assigned early ischemic change in the published lentiform region (Barber 2000). magent does not read the CT. true or false."
},
"insular_ribbon": {
"type": "boolean",
"description": "Insular ribbon (I). Caller-assigned early ischemic change in the published insular-ribbon region (Barber 2000). magent does not read the CT. true or false."
},
"internal_capsule": {
"type": "boolean",
"description": "Internal capsule (IC). Caller-assigned early ischemic change in the published internal-capsule region (Barber 2000). magent does not read the CT. true or false."
}
}
}
},
"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/aspects",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"m1": false,
"m2": false,
"m3": false,
"m4": false,
"m5": false,
"m6": false,
"caudate": false,
"lentiform": false,
"insular_ribbon": false,
"internal_capsule": false
},
{
"m1": false,
"m2": false,
"m3": false,
"m4": false,
"m5": false,
"m6": false,
"caudate": false,
"lentiform": false,
"insular_ribbon": false,
"internal_capsule": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/aspects",
"count": 2,
"items": [
{
"score": 10,
"formula": "aspects",
"citation": {
"id": "barber-2000-aspects",
"doi": "10.1016/S0140-6736(00)02237-6",
"pmid": "10905241",
"title": "Validity and reliability of a quantitative computed tomography score in predicting outcome of hyperacute stroke before thrombolytic therapy",
"source": "Lancet. 2000;355(9216):1670-1674",
"authors": "Barber PA, Demchuk AM, Zhang J, Buchan AM"
},
"max_score": 10,
"components": [
{
"factor": "caudate",
"points": 0,
"present": false
},
{
"factor": "lentiform",
"points": 0,
"present": false
},
{
"factor": "internal_capsule",
"points": 0,
"present": false
},
{
"factor": "insular_ribbon",
"points": 0,
"present": false
},
{
"factor": "m1",
"points": 0,
"present": false
},
{
"factor": "m2",
"points": 0,
"present": false
},
{
"factor": "m3",
"points": 0,
"present": false
},
{
"factor": "m4",
"points": 0,
"present": false
},
{
"factor": "m5",
"points": 0,
"present": false
},
{
"factor": "m6",
"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": "ASPECTS = 10 - (C + L + IC + I + M1 + M2 + M3 + M4 + M5 + M6); 1 point subtracted for caller-assigned early ischemic change (focal swelling or parenchymal hypoattenuation) in each published MCA-territory region; C=caudate, L=lentiform, IC=internal capsule, I=insular ribbon, M1=anterior MCA cortex, M2=MCA cortex lateral to insular ribbon, M3=posterior MCA cortex, M4/M5/M6=anterior/lateral/posterior MCA territories immediately superior to M1/M2/M3, rostral to basal ganglia; Barber 2000; score 0-10; not posterior-circulation pc-ASPECTS"
},
{
"score": 10,
"formula": "aspects",
"citation": {
"id": "barber-2000-aspects",
"doi": "10.1016/S0140-6736(00)02237-6",
"pmid": "10905241",
"title": "Validity and reliability of a quantitative computed tomography score in predicting outcome of hyperacute stroke before thrombolytic therapy",
"source": "Lancet. 2000;355(9216):1670-1674",
"authors": "Barber PA, Demchuk AM, Zhang J, Buchan AM"
},
"max_score": 10,
"components": [
{
"factor": "caudate",
"points": 0,
"present": false
},
{
"factor": "lentiform",
"points": 0,
"present": false
},
{
"factor": "internal_capsule",
"points": 0,
"present": false
},
{
"factor": "insular_ribbon",
"points": 0,
"present": false
},
{
"factor": "m1",
"points": 0,
"present": false
},
{
"factor": "m2",
"points": 0,
"present": false
},
{
"factor": "m3",
"points": 0,
"present": false
},
{
"factor": "m4",
"points": 0,
"present": false
},
{
"factor": "m5",
"points": 0,
"present": false
},
{
"factor": "m6",
"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": "ASPECTS = 10 - (C + L + IC + I + M1 + M2 + M3 + M4 + M5 + M6); 1 point subtracted for caller-assigned early ischemic change (focal swelling or parenchymal hypoattenuation) in each published MCA-territory region; C=caudate, L=lentiform, IC=internal capsule, I=insular ribbon, M1=anterior MCA cortex, M2=MCA cortex lateral to insular ribbon, M3=posterior MCA cortex, M4/M5/M6=anterior/lateral/posterior MCA territories immediately superior to M1/M2/M3, rostral to basal ganglia; Barber 2000; score 0-10; not posterior-circulation pc-ASPECTS"
}
]
}
},
"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": [
"caudate",
"lentiform",
"internal_capsule",
"insular_ribbon",
"m1",
"m2",
"m3",
"m4",
"m5",
"m6"
],
"properties": {
"m1": {
"type": "boolean",
"description": "Anterior MCA cortex (M1). Caller-assigned early ischemic change in the published M1 region (Barber 2000). magent does not read the CT. true or false."
},
"m2": {
"type": "boolean",
"description": "MCA cortex lateral to insular ribbon (M2). Caller-assigned early ischemic change in the published M2 region (Barber 2000). magent does not read the CT. true or false."
},
"m3": {
"type": "boolean",
"description": "Posterior MCA cortex (M3). Caller-assigned early ischemic change in the published M3 region (Barber 2000). magent does not read the CT. true or false."
},
"m4": {
"type": "boolean",
"description": "Anterior MCA territory immediately superior to M1, rostral to basal ganglia (M4). Caller-assigned early ischemic change in the published M4 region (Barber 2000). magent does not read the CT. true or false."
},
"m5": {
"type": "boolean",
"description": "Lateral MCA territory immediately superior to M2, rostral to basal ganglia (M5). Caller-assigned early ischemic change in the published M5 region (Barber 2000). magent does not read the CT. true or false."
},
"m6": {
"type": "boolean",
"description": "Posterior MCA territory immediately superior to M3, rostral to basal ganglia (M6). Caller-assigned early ischemic change in the published M6 region (Barber 2000). magent does not read the CT. true or false."
},
"caudate": {
"type": "boolean",
"description": "Caudate (C). Caller-assigned early ischemic change in the published caudate region (Barber 2000). magent does not read the CT. true or false."
},
"lentiform": {
"type": "boolean",
"description": "Lentiform (L). Caller-assigned early ischemic change in the published lentiform region (Barber 2000). magent does not read the CT. true or false."
},
"insular_ribbon": {
"type": "boolean",
"description": "Insular ribbon (I). Caller-assigned early ischemic change in the published insular-ribbon region (Barber 2000). magent does not read the CT. true or false."
},
"internal_capsule": {
"type": "boolean",
"description": "Internal capsule (IC). Caller-assigned early ischemic change in the published internal-capsule region (Barber 2000). magent does not read the CT. true or false."
}
}
},
"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
- 2026-09-04 09:54Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 16:15Z
- 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. 5 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/aspects, 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.