magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Dataofflineeip155:8453Exactvia cdp
HatStrokeThrombolysisSichNeurology
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/hat",
"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/hat",
"tags": [
"hat",
"stroke",
"thrombolysis",
"sich",
"neurology"
],
"mimeType": "application/json",
"description": "HAT (Lou 2008 Neurology) for sICH after stroke thrombolysis. Diabetes or glucose >200 mg/dL (1; not additive). NIHSS <15 0, 15-20 1, >20 2. CT hypodensity none 0, <1/3 MCA 1, >1/3 MCA 2 (no equals-1/3). Max 5. Collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3. Glucose in mg/dL (mmol × 18). Not a tPA withhold. magent does not assign NIHSS or read CT.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"nihss": 10,
"diabetes": false,
"hypodensity": "none",
"glucose_mg_dl": 108,
"glucose_mmol_l": 6
}
},
"output": {
"type": "json",
"example": {
"nihss": 10,
"score": 0,
"formula": "hat",
"citation": {
"id": "lou-2008",
"doi": "10.1212/01.wnl.0000330297.58334.dd",
"pmid": "18955684",
"title": "The HAT Score: a simple grading scale for predicting hemorrhage after thrombolysis",
"source": "Neurology. 2008;71(18):1417-1423",
"authors": "Lou M, Safdar A, Mehdiratta M, Kumar S, Schlaug G, Caplan L, Searls D, Selim M"
},
"diabetes": false,
"max_score": 5,
"components": [
{
"value": 108,
"factor": "diabetes_or_glucose",
"points": 0,
"present": false,
"diabetes": false
},
{
"value": 10,
"factor": "nihss",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "hypodensity",
"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.",
"hypodensity": "none",
"sich_percent": 2,
"glucose_mg_dl": 108,
"formula_expression": "HAT = (diabetes OR baseline glucose >200 mg/dL) 1 (not additive) + NIHSS (<15 0, 15-20 1, >20 2) + hypodensity (none 0, <1/3 MCA 1, >1/3 MCA 2); Lou 2008; max 5; collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3"
}
},
"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": [
"diabetes",
"nihss",
"hypodensity"
],
"properties": {
"nihss": {
"type": "integer",
"description": "Caller-assigned pretreatment NIH Stroke Scale total (integer 0-42). <15 scores 0; 15-20 scores 1; >20 scores 2 (Lou 2008). magent does not compute NIHSS or examine the patient."
},
"diabetes": {
"type": "boolean",
"description": "History of diabetes mellitus (Lou 2008). true scores 1 on the diabetes-or-glucose item; not additive with glucose >200 mg/dL."
},
"hypodensity": {
"enum": [
"none",
"less_than_third",
"greater_than_third"
],
"type": "string",
"description": "Easily visible hypodensity on initial CT as assigned by the caller (Lou 2008). none scores 0; less_than_third (<1/3 MCA) scores 1; greater_than_third (>1/3 MCA) scores 2. No published equals-1/3 category. magent does not read the CT."
},
"glucose_mg_dl": {
"type": "number",
"description": "Baseline glucose in mg/dL (50-1000). Provide this or glucose_mmol_l, not both. >200 scores 1 on the diabetes-or-glucose item if diabetes is false; 200.0 does not (Lou 2008)."
},
"glucose_mmol_l": {
"type": "number",
"description": "Baseline glucose in mmol/L (2.8-55.5). Provide this or glucose_mg_dl, not both. Converted as mg/dL = mmol/L × 18. Scores 1 on the diabetes-or-glucose item if >200 mg/dL after conversion (200.0 does not)."
}
}
}
},
"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/hat",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"nihss": 10,
"diabetes": false,
"hypodensity": "none",
"glucose_mg_dl": 108,
"glucose_mmol_l": 6
},
{
"nihss": 10,
"diabetes": false,
"hypodensity": "none",
"glucose_mg_dl": 108,
"glucose_mmol_l": 6
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/hat",
"count": 2,
"items": [
{
"nihss": 10,
"score": 0,
"formula": "hat",
"citation": {
"id": "lou-2008",
"doi": "10.1212/01.wnl.0000330297.58334.dd",
"pmid": "18955684",
"title": "The HAT Score: a simple grading scale for predicting hemorrhage after thrombolysis",
"source": "Neurology. 2008;71(18):1417-1423",
"authors": "Lou M, Safdar A, Mehdiratta M, Kumar S, Schlaug G, Caplan L, Searls D, Selim M"
},
"diabetes": false,
"max_score": 5,
"components": [
{
"value": 108,
"factor": "diabetes_or_glucose",
"points": 0,
"present": false,
"diabetes": false
},
{
"value": 10,
"factor": "nihss",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "hypodensity",
"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.",
"hypodensity": "none",
"sich_percent": 2,
"glucose_mg_dl": 108,
"formula_expression": "HAT = (diabetes OR baseline glucose >200 mg/dL) 1 (not additive) + NIHSS (<15 0, 15-20 1, >20 2) + hypodensity (none 0, <1/3 MCA 1, >1/3 MCA 2); Lou 2008; max 5; collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3"
},
{
"nihss": 10,
"score": 0,
"formula": "hat",
"citation": {
"id": "lou-2008",
"doi": "10.1212/01.wnl.0000330297.58334.dd",
"pmid": "18955684",
"title": "The HAT Score: a simple grading scale for predicting hemorrhage after thrombolysis",
"source": "Neurology. 2008;71(18):1417-1423",
"authors": "Lou M, Safdar A, Mehdiratta M, Kumar S, Schlaug G, Caplan L, Searls D, Selim M"
},
"diabetes": false,
"max_score": 5,
"components": [
{
"value": 108,
"factor": "diabetes_or_glucose",
"points": 0,
"present": false,
"diabetes": false
},
{
"value": 10,
"factor": "nihss",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "hypodensity",
"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.",
"hypodensity": "none",
"sich_percent": 2,
"glucose_mg_dl": 108,
"formula_expression": "HAT = (diabetes OR baseline glucose >200 mg/dL) 1 (not additive) + NIHSS (<15 0, 15-20 1, >20 2) + hypodensity (none 0, <1/3 MCA 1, >1/3 MCA 2); Lou 2008; max 5; collective sICH 2/5/10/15/44% for scores 0/1/2/3/>3"
}
]
}
},
"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": [
"diabetes",
"nihss",
"hypodensity"
],
"properties": {
"nihss": {
"type": "integer",
"description": "Caller-assigned pretreatment NIH Stroke Scale total (integer 0-42). <15 scores 0; 15-20 scores 1; >20 scores 2 (Lou 2008). magent does not compute NIHSS or examine the patient."
},
"diabetes": {
"type": "boolean",
"description": "History of diabetes mellitus (Lou 2008). true scores 1 on the diabetes-or-glucose item; not additive with glucose >200 mg/dL."
},
"hypodensity": {
"enum": [
"none",
"less_than_third",
"greater_than_third"
],
"type": "string",
"description": "Easily visible hypodensity on initial CT as assigned by the caller (Lou 2008). none scores 0; less_than_third (<1/3 MCA) scores 1; greater_than_third (>1/3 MCA) scores 2. No published equals-1/3 category. magent does not read the CT."
},
"glucose_mg_dl": {
"type": "number",
"description": "Baseline glucose in mg/dL (50-1000). Provide this or glucose_mmol_l, not both. >200 scores 1 on the diabetes-or-glucose item if diabetes is false; 200.0 does not (Lou 2008)."
},
"glucose_mmol_l": {
"type": "number",
"description": "Baseline glucose in mmol/L (2.8-55.5). Provide this or glucose_mg_dl, not both. Converted as mg/dL = mmol/L × 18. Scores 1 on the diabetes-or-glucose item if >200 mg/dL after conversion (200.0 does not)."
}
}
},
"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 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/hat, 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.