magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Dataofflineeip155:8453Exactvia cdp
SedanStrokeThrombolysisSichNeurology
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 13:38Z
—
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/sedan",
"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/sedan",
"tags": [
"sedan",
"stroke",
"thrombolysis",
"sich",
"neurology"
],
"mimeType": "application/json",
"description": "SEDAN (Strbian 2012 Ann Neurol) for sICH after stroke thrombolysis. Glucose 8.1-12.0 mmol/L (1) or >12.0 (2); early infarct signs (1); hyperdense cerebral artery (1); age >75 (1); admission NIHSS ≥10 (1); max 6. Derivation absolute sICH 1.4%, 2.9%, 8.5%, 12.2%, 21.7%, 33.3% for scores 0-5; no published percent for 6. Not a tPA withhold decision. magent does not assign NIHSS or read CT.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 60,
"nihss": 5,
"glucose_mg_dl": 108,
"glucose_mmol_l": 6,
"hyperdense_artery": false,
"early_infarct_signs": false
}
},
"output": {
"type": "json",
"example": {
"nihss": 5,
"score": 0,
"formula": "sedan",
"citation": {
"id": "strbian-2012-sedan",
"doi": "10.1002/ana.23546",
"title": "Symptomatic intracranial hemorrhage after stroke thrombolysis: the SEDAN score",
"source": "Ann Neurol. 2012;71(5):634-641",
"authors": "Strbian D, Engelter S, Michel P, Meretoja A, Sekoranja L, Ahlhelm FJ, Mustanoja S, Lynch J, Soinne L, Sairanen T, Lyrer P, Tatlisumak T"
},
"age_years": 60,
"max_score": 6,
"components": [
{
"value": 6,
"factor": "glucose",
"points": 0,
"present": false
},
{
"factor": "early_infarct_signs",
"points": 0,
"present": false
},
{
"factor": "hyperdense_artery",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "nihss",
"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.",
"sich_percent": 1.4,
"glucose_mmol_l": 6,
"hyperdense_artery": false,
"formula_expression": "SEDAN = glucose (8.1-12.0 mmol/L 1; >12.0 mmol/L 2) + early_infarct_signs 1 + hyperdense_artery 1 + (age >75) 1 + (NIHSS >=10) 1; max 6; derivation sICH 1.4/2.9/8.5/12.2/21.7/33.3% for scores 0-5 (Strbian 2012); no published percent for 6",
"early_infarct_signs": 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",
"nihss",
"early_infarct_signs",
"hyperdense_artery"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). >75 scores 1; 75 does not (Strbian 2012). magent does not date the patient."
},
"nihss": {
"type": "integer",
"description": "Caller-assigned NIH Stroke Scale total (integer 0-42). ≥10 scores 1; 9 does not. magent does not compute NIHSS or examine the patient."
},
"glucose_mg_dl": {
"type": "number",
"description": "Baseline glucose in mg/dL (50-1000). Converted as mmol/L = mg/dL / 18. Provide this or glucose_mmol_l, not both."
},
"glucose_mmol_l": {
"type": "number",
"description": "Baseline glucose in mmol/L (2.8-55.5). Provide this or glucose_mg_dl, not both. 8.1-12.0 inclusive scores 1; >12.0 scores 2; else 0 (Strbian 2012)."
},
"hyperdense_artery": {
"type": "boolean",
"description": "(Hyper)dense cerebral artery sign on admission CT as assigned by the caller (Strbian 2012). true scores 1; false scores 0. magent does not read the CT."
},
"early_infarct_signs": {
"type": "boolean",
"description": "Early infarct signs on admission CT as assigned by the caller (Strbian 2012). true scores 1; false scores 0. magent does not read the CT."
}
}
}
},
"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/sedan",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 60,
"nihss": 5,
"glucose_mg_dl": 108,
"glucose_mmol_l": 6,
"hyperdense_artery": false,
"early_infarct_signs": false
},
{
"age": 60,
"nihss": 5,
"glucose_mg_dl": 108,
"glucose_mmol_l": 6,
"hyperdense_artery": false,
"early_infarct_signs": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/sedan",
"count": 2,
"items": [
{
"nihss": 5,
"score": 0,
"formula": "sedan",
"citation": {
"id": "strbian-2012-sedan",
"doi": "10.1002/ana.23546",
"title": "Symptomatic intracranial hemorrhage after stroke thrombolysis: the SEDAN score",
"source": "Ann Neurol. 2012;71(5):634-641",
"authors": "Strbian D, Engelter S, Michel P, Meretoja A, Sekoranja L, Ahlhelm FJ, Mustanoja S, Lynch J, Soinne L, Sairanen T, Lyrer P, Tatlisumak T"
},
"age_years": 60,
"max_score": 6,
"components": [
{
"value": 6,
"factor": "glucose",
"points": 0,
"present": false
},
{
"factor": "early_infarct_signs",
"points": 0,
"present": false
},
{
"factor": "hyperdense_artery",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "nihss",
"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.",
"sich_percent": 1.4,
"glucose_mmol_l": 6,
"hyperdense_artery": false,
"formula_expression": "SEDAN = glucose (8.1-12.0 mmol/L 1; >12.0 mmol/L 2) + early_infarct_signs 1 + hyperdense_artery 1 + (age >75) 1 + (NIHSS >=10) 1; max 6; derivation sICH 1.4/2.9/8.5/12.2/21.7/33.3% for scores 0-5 (Strbian 2012); no published percent for 6",
"early_infarct_signs": false
},
{
"nihss": 5,
"score": 0,
"formula": "sedan",
"citation": {
"id": "strbian-2012-sedan",
"doi": "10.1002/ana.23546",
"title": "Symptomatic intracranial hemorrhage after stroke thrombolysis: the SEDAN score",
"source": "Ann Neurol. 2012;71(5):634-641",
"authors": "Strbian D, Engelter S, Michel P, Meretoja A, Sekoranja L, Ahlhelm FJ, Mustanoja S, Lynch J, Soinne L, Sairanen T, Lyrer P, Tatlisumak T"
},
"age_years": 60,
"max_score": 6,
"components": [
{
"value": 6,
"factor": "glucose",
"points": 0,
"present": false
},
{
"factor": "early_infarct_signs",
"points": 0,
"present": false
},
{
"factor": "hyperdense_artery",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age",
"points": 0,
"present": false
},
{
"value": 5,
"factor": "nihss",
"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.",
"sich_percent": 1.4,
"glucose_mmol_l": 6,
"hyperdense_artery": false,
"formula_expression": "SEDAN = glucose (8.1-12.0 mmol/L 1; >12.0 mmol/L 2) + early_infarct_signs 1 + hyperdense_artery 1 + (age >75) 1 + (NIHSS >=10) 1; max 6; derivation sICH 1.4/2.9/8.5/12.2/21.7/33.3% for scores 0-5 (Strbian 2012); no published percent for 6",
"early_infarct_signs": 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",
"nihss",
"early_infarct_signs",
"hyperdense_artery"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (18-120). >75 scores 1; 75 does not (Strbian 2012). magent does not date the patient."
},
"nihss": {
"type": "integer",
"description": "Caller-assigned NIH Stroke Scale total (integer 0-42). ≥10 scores 1; 9 does not. magent does not compute NIHSS or examine the patient."
},
"glucose_mg_dl": {
"type": "number",
"description": "Baseline glucose in mg/dL (50-1000). Converted as mmol/L = mg/dL / 18. Provide this or glucose_mmol_l, not both."
},
"glucose_mmol_l": {
"type": "number",
"description": "Baseline glucose in mmol/L (2.8-55.5). Provide this or glucose_mg_dl, not both. 8.1-12.0 inclusive scores 1; >12.0 scores 2; else 0 (Strbian 2012)."
},
"hyperdense_artery": {
"type": "boolean",
"description": "(Hyper)dense cerebral artery sign on admission CT as assigned by the caller (Strbian 2012). true scores 1; false scores 0. magent does not read the CT."
},
"early_infarct_signs": {
"type": "boolean",
"description": "Early infarct signs on admission CT as assigned by the caller (Strbian 2012). true scores 1; false scores 0. magent does not read the CT."
}
}
},
"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 13:38Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 06:45Z
- 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/sedan, 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.