magent
Hlatky 1989 Duke Activity Status Index. Twelve caller-assigned yes/no items (self-care through strenuous sports); Yes adds the Table I weight, No adds 0. Light housework is 2.70. DASI is the sum (0-58.2). Estimated peak VO2 mL/kg/min = 0.43 x DASI + 9.6. magent does not observe the patient. Not a functional-capacity assignment or exercise-test replacement.
Tradingofflineeip155:8453Exactvia cdp
DasiVo2peakFunctional-capacityHemodynamicsCalculator
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 15 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 12:54Z
—
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/dasi",
"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/dasi",
"tags": [
"dasi",
"vo2peak",
"functional-capacity",
"hemodynamics",
"calculator"
],
"mimeType": "application/json",
"description": "Hlatky 1989 Duke Activity Status Index. Twelve caller-assigned yes/no items (self-care through strenuous sports); Yes adds the Table I weight, No adds 0. Light housework is 2.70. DASI is the sum (0-58.2). Estimated peak VO2 mL/kg/min = 0.43 x DASI + 9.6. magent does not observe the patient. Not a functional-capacity assignment or exercise-test replacement.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"yardwork": false,
"run_short": false,
"self_care": false,
"walk_blocks": false,
"climb_stairs": false,
"walk_indoors": false,
"heavy_housework": false,
"light_housework": false,
"sexual_relations": false,
"strenuous_sports": false,
"moderate_housework": false,
"moderate_recreation": false
}
},
"output": {
"type": "json",
"example": {
"dasi": 0,
"score": 0,
"formula": "dasi",
"citation": {
"id": "hlatky-1989",
"doi": "10.1016/0002-9149(89)90496-7",
"pmid": "2782256",
"title": "A brief self-administered questionnaire to determine functional capacity (The Duke Activity Status Index)",
"source": "Am J Cardiol. 1989;64(10):651-654",
"authors": "Hlatky MA, Boineau RE, Higginbotham MB, Lee KL, Mark DB, Califf RM, Cobb FR, Pryor DB"
},
"max_score": 58.2,
"components": [
{
"factor": "self_care",
"points": 0,
"present": false
},
{
"factor": "walk_indoors",
"points": 0,
"present": false
},
{
"factor": "walk_blocks",
"points": 0,
"present": false
},
{
"factor": "climb_stairs",
"points": 0,
"present": false
},
{
"factor": "run_short",
"points": 0,
"present": false
},
{
"factor": "light_housework",
"points": 0,
"present": false
},
{
"factor": "moderate_housework",
"points": 0,
"present": false
},
{
"factor": "heavy_housework",
"points": 0,
"present": false
},
{
"factor": "yardwork",
"points": 0,
"present": false
},
{
"factor": "sexual_relations",
"points": 0,
"present": false
},
{
"factor": "moderate_recreation",
"points": 0,
"present": false
},
{
"factor": "strenuous_sports",
"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.",
"vo2peak_ml_kg_min": 9.6,
"formula_expression": "DASI = 2.75*self_care + 1.75*walk_indoors + 2.75*walk_blocks + 5.50*climb_stairs + 8.00*run_short + 2.70*light_housework + 3.50*moderate_housework + 8.00*heavy_housework + 4.50*yardwork + 5.25*sexual_relations + 6.00*moderate_recreation + 7.50*strenuous_sports (Yes = weight, No = 0); VO2peak_mL/kg/min = 0.43*DASI + 9.6 (Hlatky 1989 Table I)"
}
},
"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": [
"self_care",
"walk_indoors",
"walk_blocks",
"climb_stairs",
"run_short",
"light_housework",
"moderate_housework",
"heavy_housework",
"yardwork",
"sexual_relations",
"moderate_recreation",
"strenuous_sports"
],
"properties": {
"yardwork": {
"type": "boolean",
"description": "Can do yardwork like raking leaves, weeding, or pushing a power mower (Hlatky 1989 Table I). true or false. Yes adds 4.50."
},
"run_short": {
"type": "boolean",
"description": "Can run a short distance (Hlatky 1989 Table I). true or false. Yes adds 8.00."
},
"self_care": {
"type": "boolean",
"description": "Can take care of self: eating, dressing, bathing, or using the toilet (Hlatky 1989 Table I). true or false. Yes adds 2.75."
},
"walk_blocks": {
"type": "boolean",
"description": "Can walk a block or two on level ground (Hlatky 1989 Table I). true or false. Yes adds 2.75."
},
"climb_stairs": {
"type": "boolean",
"description": "Can climb a flight of stairs or walk up a hill (Hlatky 1989 Table I). true or false. Yes adds 5.50."
},
"walk_indoors": {
"type": "boolean",
"description": "Can walk indoors, such as around the house (Hlatky 1989 Table I). true or false. Yes adds 1.75."
},
"heavy_housework": {
"type": "boolean",
"description": "Can do heavy work around the house like scrubbing floors, or lifting or moving heavy furniture (Hlatky 1989 Table I). true or false. Yes adds 8.00."
},
"light_housework": {
"type": "boolean",
"description": "Can do light work around the house like dusting or washing dishes (Hlatky 1989 Table I). true or false. Yes adds 2.70."
},
"sexual_relations": {
"type": "boolean",
"description": "Can have sexual relations (Hlatky 1989 Table I). true or false. Yes adds 5.25."
},
"strenuous_sports": {
"type": "boolean",
"description": "Can participate in strenuous sports like swimming, singles tennis, football, basketball, or skiing (Hlatky 1989 Table I). true or false. Yes adds 7.50."
},
"moderate_housework": {
"type": "boolean",
"description": "Can do moderate work around the house like vacuuming, sweeping floors, or carrying in groceries (Hlatky 1989 Table I). true or false. Yes adds 3.50."
},
"moderate_recreation": {
"type": "boolean",
"description": "Can participate in moderate recreational activities like golf, bowling, dancing, doubles tennis, or throwing a baseball or football (Hlatky 1989 Table I). true or false. Yes adds 6.00."
}
}
}
},
"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/dasi",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"yardwork": false,
"run_short": false,
"self_care": false,
"walk_blocks": false,
"climb_stairs": false,
"walk_indoors": false,
"heavy_housework": false,
"light_housework": false,
"sexual_relations": false,
"strenuous_sports": false,
"moderate_housework": false,
"moderate_recreation": false
},
{
"yardwork": false,
"run_short": false,
"self_care": false,
"walk_blocks": false,
"climb_stairs": false,
"walk_indoors": false,
"heavy_housework": false,
"light_housework": false,
"sexual_relations": false,
"strenuous_sports": false,
"moderate_housework": false,
"moderate_recreation": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/dasi",
"count": 2,
"items": [
{
"dasi": 0,
"score": 0,
"formula": "dasi",
"citation": {
"id": "hlatky-1989",
"doi": "10.1016/0002-9149(89)90496-7",
"pmid": "2782256",
"title": "A brief self-administered questionnaire to determine functional capacity (The Duke Activity Status Index)",
"source": "Am J Cardiol. 1989;64(10):651-654",
"authors": "Hlatky MA, Boineau RE, Higginbotham MB, Lee KL, Mark DB, Califf RM, Cobb FR, Pryor DB"
},
"max_score": 58.2,
"components": [
{
"factor": "self_care",
"points": 0,
"present": false
},
{
"factor": "walk_indoors",
"points": 0,
"present": false
},
{
"factor": "walk_blocks",
"points": 0,
"present": false
},
{
"factor": "climb_stairs",
"points": 0,
"present": false
},
{
"factor": "run_short",
"points": 0,
"present": false
},
{
"factor": "light_housework",
"points": 0,
"present": false
},
{
"factor": "moderate_housework",
"points": 0,
"present": false
},
{
"factor": "heavy_housework",
"points": 0,
"present": false
},
{
"factor": "yardwork",
"points": 0,
"present": false
},
{
"factor": "sexual_relations",
"points": 0,
"present": false
},
{
"factor": "moderate_recreation",
"points": 0,
"present": false
},
{
"factor": "strenuous_sports",
"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.",
"vo2peak_ml_kg_min": 9.6,
"formula_expression": "DASI = 2.75*self_care + 1.75*walk_indoors + 2.75*walk_blocks + 5.50*climb_stairs + 8.00*run_short + 2.70*light_housework + 3.50*moderate_housework + 8.00*heavy_housework + 4.50*yardwork + 5.25*sexual_relations + 6.00*moderate_recreation + 7.50*strenuous_sports (Yes = weight, No = 0); VO2peak_mL/kg/min = 0.43*DASI + 9.6 (Hlatky 1989 Table I)"
},
{
"dasi": 0,
"score": 0,
"formula": "dasi",
"citation": {
"id": "hlatky-1989",
"doi": "10.1016/0002-9149(89)90496-7",
"pmid": "2782256",
"title": "A brief self-administered questionnaire to determine functional capacity (The Duke Activity Status Index)",
"source": "Am J Cardiol. 1989;64(10):651-654",
"authors": "Hlatky MA, Boineau RE, Higginbotham MB, Lee KL, Mark DB, Califf RM, Cobb FR, Pryor DB"
},
"max_score": 58.2,
"components": [
{
"factor": "self_care",
"points": 0,
"present": false
},
{
"factor": "walk_indoors",
"points": 0,
"present": false
},
{
"factor": "walk_blocks",
"points": 0,
"present": false
},
{
"factor": "climb_stairs",
"points": 0,
"present": false
},
{
"factor": "run_short",
"points": 0,
"present": false
},
{
"factor": "light_housework",
"points": 0,
"present": false
},
{
"factor": "moderate_housework",
"points": 0,
"present": false
},
{
"factor": "heavy_housework",
"points": 0,
"present": false
},
{
"factor": "yardwork",
"points": 0,
"present": false
},
{
"factor": "sexual_relations",
"points": 0,
"present": false
},
{
"factor": "moderate_recreation",
"points": 0,
"present": false
},
{
"factor": "strenuous_sports",
"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.",
"vo2peak_ml_kg_min": 9.6,
"formula_expression": "DASI = 2.75*self_care + 1.75*walk_indoors + 2.75*walk_blocks + 5.50*climb_stairs + 8.00*run_short + 2.70*light_housework + 3.50*moderate_housework + 8.00*heavy_housework + 4.50*yardwork + 5.25*sexual_relations + 6.00*moderate_recreation + 7.50*strenuous_sports (Yes = weight, No = 0); VO2peak_mL/kg/min = 0.43*DASI + 9.6 (Hlatky 1989 Table I)"
}
]
}
},
"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": [
"self_care",
"walk_indoors",
"walk_blocks",
"climb_stairs",
"run_short",
"light_housework",
"moderate_housework",
"heavy_housework",
"yardwork",
"sexual_relations",
"moderate_recreation",
"strenuous_sports"
],
"properties": {
"yardwork": {
"type": "boolean",
"description": "Can do yardwork like raking leaves, weeding, or pushing a power mower (Hlatky 1989 Table I). true or false. Yes adds 4.50."
},
"run_short": {
"type": "boolean",
"description": "Can run a short distance (Hlatky 1989 Table I). true or false. Yes adds 8.00."
},
"self_care": {
"type": "boolean",
"description": "Can take care of self: eating, dressing, bathing, or using the toilet (Hlatky 1989 Table I). true or false. Yes adds 2.75."
},
"walk_blocks": {
"type": "boolean",
"description": "Can walk a block or two on level ground (Hlatky 1989 Table I). true or false. Yes adds 2.75."
},
"climb_stairs": {
"type": "boolean",
"description": "Can climb a flight of stairs or walk up a hill (Hlatky 1989 Table I). true or false. Yes adds 5.50."
},
"walk_indoors": {
"type": "boolean",
"description": "Can walk indoors, such as around the house (Hlatky 1989 Table I). true or false. Yes adds 1.75."
},
"heavy_housework": {
"type": "boolean",
"description": "Can do heavy work around the house like scrubbing floors, or lifting or moving heavy furniture (Hlatky 1989 Table I). true or false. Yes adds 8.00."
},
"light_housework": {
"type": "boolean",
"description": "Can do light work around the house like dusting or washing dishes (Hlatky 1989 Table I). true or false. Yes adds 2.70."
},
"sexual_relations": {
"type": "boolean",
"description": "Can have sexual relations (Hlatky 1989 Table I). true or false. Yes adds 5.25."
},
"strenuous_sports": {
"type": "boolean",
"description": "Can participate in strenuous sports like swimming, singles tennis, football, basketball, or skiing (Hlatky 1989 Table I). true or false. Yes adds 7.50."
},
"moderate_housework": {
"type": "boolean",
"description": "Can do moderate work around the house like vacuuming, sweeping floors, or carrying in groceries (Hlatky 1989 Table I). true or false. Yes adds 3.50."
},
"moderate_recreation": {
"type": "boolean",
"description": "Can participate in moderate recreational activities like golf, bowling, dancing, doubles tennis, or throwing a baseball or football (Hlatky 1989 Table I). true or false. Yes adds 6.00."
}
}
},
"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 12:54Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 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. 15 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/dasi, 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.