magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
Garfield-afAtrial-fibrillationMortalityStrokeCalculator
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 07:02Z
—
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.
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"stroke",
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"mimeType": "application/json",
"description": "Fox 2017 GARFIELD-AF 1-year all-cause mortality, ischaemic stroke/systemic embolism, and major bleed from age, sex, weight, pulse, diastolic BP, comorbidities, smoking, caller-assigned ethnicity (White/Caucasian reference; Hispanic/Latino, Asian, Black/Mixed/Other), oral anticoagulant class (none, NOAC, VKA), carotid occlusive disease, and antiplatelet therapy. Published 1-year equations. magent does not assign race or ethnicity. Not a diagnosis or anticoagulation order.",
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"antiplatelet": false,
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"stroke_lp": 0,
"weight_kg": 75,
"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.",
"antiplatelet": false,
"mortality_lp": -0.38390175,
"prior_stroke": false,
"heart_failure": false,
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"bleed_1y_percent": 0.7,
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"stroke_1y_percent": 1.2,
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"formula_expression": "mortality_1y_percent = 100*(1-0.962450119**exp(lp_mort)); lp_mort = 0.306202287*female + 0.693789082*heart_failure + 0.306120964*vascular_disease + 0.26585298*prior_stroke + 0.385407386*history_of_bleeding + 0.280133213*diabetes + 0.377903886*moderate_to_severe_ckd + 0.489453313*dementia + 0.345481149*current_smoking - 0.414591263*oac_noac - 0.18593561*oac_vka + 0.157023564*ethnicity_hispanic_latino - 0.609609055*ethnicity_asian + 0.375675102*ethnicity_black_mixed_other + 0.031050027*(age-65) if age<=65 + 0.064594824*(age-65) if age>65 - 0.021535182*(weight_kg-75) if weight_kg<=75 + 0.007678035*(pulse-120) if pulse<=120 - 0.019304333*(dbp-80) if dbp<=80; stroke_1y_percent = 100*(1-0.987574311**exp(lp_stroke)); lp_stroke = 0.233182644*heart_failure + 0.197919709*vascular_disease + 0.800863063*prior_stroke + 0.29883967*history_of_bleeding + 0.211995445*diabetes + 0.349516938*moderate_to_severe_ckd + 0.513221391*dementia + 0.478831506*current_smoking - 0.572199357*oac_noac - 0.352373263*oac_vka + 0.039138147*(age-65) + 0.01590016*(dbp-80) if dbp>80; bleed_1y_percent = 100*(1-0.991720115**exp(lp_bleed)); lp_bleed = 0.168950627*vascular_disease + 0.782237771*history_of_bleeding + 0.316245771*carotid_occlusive_disease + 0.498686574*moderate_to_severe_ckd + 0.24232543*oac_noac + 0.609713354*oac_vka + 0.236620846*antiplatelet + 0.176898047*diabetes + 0.043476276*(age-65) + 0.004167103*(pulse-120); Fox 2017 / GARFIELD-AF 1-year equations; White/Caucasian ethnicity reference 0; magent does not assign race or ethnicity",
"history_of_bleeding": false,
"mortality_1y_percent": 2.6,
"moderate_to_severe_ckd": false,
"carotid_occlusive_disease": false
}
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"iconUrl": "https://api.magentlab.com/favicon.ico"
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"HEAD",
"DELETE"
],
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"headers": {
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"queryParams": {
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"required": [
"age",
"sex",
"weight_kg",
"pulse",
"diastolic_bp_mm_hg",
"heart_failure",
"vascular_disease",
"prior_stroke",
"history_of_bleeding",
"diabetes",
"moderate_to_severe_ckd",
"dementia",
"current_smoking",
"oac",
"ethnicity",
"carotid_occlusive_disease",
"antiplatelet"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Fox 2017 / GARFIELD-AF: mortality uses 0.031050027*(age-65) when age<=65 and 0.064594824*(age-65) when age>65. Stroke and bleed use 0.039138147*(age-65) and 0.043476276*(age-65) with no knot."
},
"oac": {
"enum": [
"none",
"noac",
"vka"
],
"type": "string",
"description": "Caller-assigned oral anticoagulant class: none, noac, or vka (mutually exclusive). NOAC and VKA enter as separate Fox 2017 terms. magent does not choose an anticoagulant."
},
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "Sex as recorded (female or male). Fox 2017 female sex adds 0.306202287 to the mortality linear predictor. Stroke and bleed equations have no sex term."
},
"pulse": {
"type": "number",
"description": "Pulse in beats per minute (30-250). Mortality: 0.007678035*(pulse-120) when pulse<=120; 0 when pulse>120. Bleed uses 0.004167103*(pulse-120) with no truncation."
},
"dementia": {
"type": "boolean",
"description": "Caller-assigned dementia (true or false). Mortality +0.489453313; stroke +0.513221391."
},
"diabetes": {
"type": "boolean",
"description": "Caller-assigned diabetes (true or false). Mortality +0.280133213; stroke +0.211995445; bleed +0.176898047."
},
"ethnicity": {
"enum": [
"white",
"hispanic_latino",
"asian",
"black_mixed_other"
],
"type": "string",
"description": "Caller-assigned ethnicity using Fox 2017 / GARFIELD-AF terms. white (White/Caucasian) is the mortality reference (0); hispanic_latino +0.157023564; asian -0.609609055; black_mixed_other +0.375675102. Stroke and bleed have no ethnicity term. magent does not assign race or ethnicity."
},
"weight_kg": {
"type": "number",
"description": "Weight in kg (20-300). Mortality: -0.021535182*(weight_kg-75) when weight_kg<=75; 0 when weight_kg>75. magent does not convert lb."
},
"antiplatelet": {
"type": "boolean",
"description": "Caller-assigned antiplatelet therapy (true or false). Bleed +0.236620846. Mortality and stroke have no antiplatelet term. magent does not order antiplatelet therapy."
},
"prior_stroke": {
"type": "boolean",
"description": "Caller-assigned prior stroke (true or false). Mortality +0.26585298; stroke +0.800863063."
},
"heart_failure": {
"type": "boolean",
"description": "Caller-assigned heart failure (true or false). Mortality +0.693789082; stroke +0.233182644. magent does not diagnose heart failure."
},
"current_smoking": {
"type": "boolean",
"description": "Caller-assigned current smoking (true or false). Mortality +0.345481149; stroke +0.478831506."
},
"vascular_disease": {
"type": "boolean",
"description": "Caller-assigned vascular disease (true or false). Mortality +0.306120964; stroke +0.197919709; bleed +0.168950627."
},
"diastolic_bp_mm_hg": {
"type": "number",
"description": "Diastolic blood pressure in mm Hg (30-150). Mortality: -0.019304333*(dbp-80) when dbp<=80; 0 when dbp>80. Stroke: 0.01590016*(dbp-80) when dbp>80; 0 when dbp<=80."
},
"history_of_bleeding": {
"type": "boolean",
"description": "Caller-assigned history of bleeding (true or false). Mortality +0.385407386; stroke +0.29883967; bleed +0.782237771."
},
"moderate_to_severe_ckd": {
"type": "boolean",
"description": "Caller-assigned moderate-to-severe chronic kidney disease (true or false). Mortality +0.377903886; stroke +0.349516938; bleed +0.498686574. magent does not compute eGFR."
},
"carotid_occlusive_disease": {
"type": "boolean",
"description": "Caller-assigned carotid occlusive disease (true or false). Bleed +0.316245771. Mortality and stroke have no carotid term."
}
}
}
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},
"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
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"items": [
{
"age": 65,
"oac": "none",
"sex": "male",
"pulse": 70,
"formula": "garfield_af",
"bleed_lp": -0.20835515,
"citation": {
"id": "fox-2017-garfield-af",
"doi": "10.1136/bmjopen-2017-017157",
"pmid": "29273652",
"title": "Improved risk stratification of patients with atrial fibrillation: an integrated GARFIELD-AF tool for the prediction of mortality, stroke and bleed in patients with and without anticoagulation",
"source": "BMJ Open. 2017;7(12):e017157",
"authors": "Fox KAA, Lucas JE, Pieper KS, et al."
},
"dementia": false,
"diabetes": false,
"ethnicity": "white",
"stroke_lp": 0,
"weight_kg": 75,
"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.",
"antiplatelet": false,
"mortality_lp": -0.38390175,
"prior_stroke": false,
"heart_failure": false,
"current_smoking": false,
"bleed_1y_percent": 0.7,
"vascular_disease": false,
"stroke_1y_percent": 1.2,
"diastolic_bp_mm_hg": 80,
"formula_expression": "mortality_1y_percent = 100*(1-0.962450119**exp(lp_mort)); lp_mort = 0.306202287*female + 0.693789082*heart_failure + 0.306120964*vascular_disease + 0.26585298*prior_stroke + 0.385407386*history_of_bleeding + 0.280133213*diabetes + 0.377903886*moderate_to_severe_ckd + 0.489453313*dementia + 0.345481149*current_smoking - 0.414591263*oac_noac - 0.18593561*oac_vka + 0.157023564*ethnicity_hispanic_latino - 0.609609055*ethnicity_asian + 0.375675102*ethnicity_black_mixed_other + 0.031050027*(age-65) if age<=65 + 0.064594824*(age-65) if age>65 - 0.021535182*(weight_kg-75) if weight_kg<=75 + 0.007678035*(pulse-120) if pulse<=120 - 0.019304333*(dbp-80) if dbp<=80; stroke_1y_percent = 100*(1-0.987574311**exp(lp_stroke)); lp_stroke = 0.233182644*heart_failure + 0.197919709*vascular_disease + 0.800863063*prior_stroke + 0.29883967*history_of_bleeding + 0.211995445*diabetes + 0.349516938*moderate_to_severe_ckd + 0.513221391*dementia + 0.478831506*current_smoking - 0.572199357*oac_noac - 0.352373263*oac_vka + 0.039138147*(age-65) + 0.01590016*(dbp-80) if dbp>80; bleed_1y_percent = 100*(1-0.991720115**exp(lp_bleed)); lp_bleed = 0.168950627*vascular_disease + 0.782237771*history_of_bleeding + 0.316245771*carotid_occlusive_disease + 0.498686574*moderate_to_severe_ckd + 0.24232543*oac_noac + 0.609713354*oac_vka + 0.236620846*antiplatelet + 0.176898047*diabetes + 0.043476276*(age-65) + 0.004167103*(pulse-120); Fox 2017 / GARFIELD-AF 1-year equations; White/Caucasian ethnicity reference 0; magent does not assign race or ethnicity",
"history_of_bleeding": false,
"mortality_1y_percent": 2.6,
"moderate_to_severe_ckd": false,
"carotid_occlusive_disease": false
},
{
"age": 65,
"oac": "none",
"sex": "male",
"pulse": 70,
"formula": "garfield_af",
"bleed_lp": -0.20835515,
"citation": {
"id": "fox-2017-garfield-af",
"doi": "10.1136/bmjopen-2017-017157",
"pmid": "29273652",
"title": "Improved risk stratification of patients with atrial fibrillation: an integrated GARFIELD-AF tool for the prediction of mortality, stroke and bleed in patients with and without anticoagulation",
"source": "BMJ Open. 2017;7(12):e017157",
"authors": "Fox KAA, Lucas JE, Pieper KS, et al."
},
"dementia": false,
"diabetes": false,
"ethnicity": "white",
"stroke_lp": 0,
"weight_kg": 75,
"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.",
"antiplatelet": false,
"mortality_lp": -0.38390175,
"prior_stroke": false,
"heart_failure": false,
"current_smoking": false,
"bleed_1y_percent": 0.7,
"vascular_disease": false,
"stroke_1y_percent": 1.2,
"diastolic_bp_mm_hg": 80,
"formula_expression": "mortality_1y_percent = 100*(1-0.962450119**exp(lp_mort)); lp_mort = 0.306202287*female + 0.693789082*heart_failure + 0.306120964*vascular_disease + 0.26585298*prior_stroke + 0.385407386*history_of_bleeding + 0.280133213*diabetes + 0.377903886*moderate_to_severe_ckd + 0.489453313*dementia + 0.345481149*current_smoking - 0.414591263*oac_noac - 0.18593561*oac_vka + 0.157023564*ethnicity_hispanic_latino - 0.609609055*ethnicity_asian + 0.375675102*ethnicity_black_mixed_other + 0.031050027*(age-65) if age<=65 + 0.064594824*(age-65) if age>65 - 0.021535182*(weight_kg-75) if weight_kg<=75 + 0.007678035*(pulse-120) if pulse<=120 - 0.019304333*(dbp-80) if dbp<=80; stroke_1y_percent = 100*(1-0.987574311**exp(lp_stroke)); lp_stroke = 0.233182644*heart_failure + 0.197919709*vascular_disease + 0.800863063*prior_stroke + 0.29883967*history_of_bleeding + 0.211995445*diabetes + 0.349516938*moderate_to_severe_ckd + 0.513221391*dementia + 0.478831506*current_smoking - 0.572199357*oac_noac - 0.352373263*oac_vka + 0.039138147*(age-65) + 0.01590016*(dbp-80) if dbp>80; bleed_1y_percent = 100*(1-0.991720115**exp(lp_bleed)); lp_bleed = 0.168950627*vascular_disease + 0.782237771*history_of_bleeding + 0.316245771*carotid_occlusive_disease + 0.498686574*moderate_to_severe_ckd + 0.24232543*oac_noac + 0.609713354*oac_vka + 0.236620846*antiplatelet + 0.176898047*diabetes + 0.043476276*(age-65) + 0.004167103*(pulse-120); Fox 2017 / GARFIELD-AF 1-year equations; White/Caucasian ethnicity reference 0; magent does not assign race or ethnicity",
"history_of_bleeding": false,
"mortality_1y_percent": 2.6,
"moderate_to_severe_ckd": false,
"carotid_occlusive_disease": false
}
]
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
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"required": [
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"type": "array",
"items": {
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"required": [
"age",
"sex",
"weight_kg",
"pulse",
"diastolic_bp_mm_hg",
"heart_failure",
"vascular_disease",
"prior_stroke",
"history_of_bleeding",
"diabetes",
"moderate_to_severe_ckd",
"dementia",
"current_smoking",
"oac",
"ethnicity",
"carotid_occlusive_disease",
"antiplatelet"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Fox 2017 / GARFIELD-AF: mortality uses 0.031050027*(age-65) when age<=65 and 0.064594824*(age-65) when age>65. Stroke and bleed use 0.039138147*(age-65) and 0.043476276*(age-65) with no knot."
},
"oac": {
"enum": [
"none",
"noac",
"vka"
],
"type": "string",
"description": "Caller-assigned oral anticoagulant class: none, noac, or vka (mutually exclusive). NOAC and VKA enter as separate Fox 2017 terms. magent does not choose an anticoagulant."
},
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "Sex as recorded (female or male). Fox 2017 female sex adds 0.306202287 to the mortality linear predictor. Stroke and bleed equations have no sex term."
},
"pulse": {
"type": "number",
"description": "Pulse in beats per minute (30-250). Mortality: 0.007678035*(pulse-120) when pulse<=120; 0 when pulse>120. Bleed uses 0.004167103*(pulse-120) with no truncation."
},
"dementia": {
"type": "boolean",
"description": "Caller-assigned dementia (true or false). Mortality +0.489453313; stroke +0.513221391."
},
"diabetes": {
"type": "boolean",
"description": "Caller-assigned diabetes (true or false). Mortality +0.280133213; stroke +0.211995445; bleed +0.176898047."
},
"ethnicity": {
"enum": [
"white",
"hispanic_latino",
"asian",
"black_mixed_other"
],
"type": "string",
"description": "Caller-assigned ethnicity using Fox 2017 / GARFIELD-AF terms. white (White/Caucasian) is the mortality reference (0); hispanic_latino +0.157023564; asian -0.609609055; black_mixed_other +0.375675102. Stroke and bleed have no ethnicity term. magent does not assign race or ethnicity."
},
"weight_kg": {
"type": "number",
"description": "Weight in kg (20-300). Mortality: -0.021535182*(weight_kg-75) when weight_kg<=75; 0 when weight_kg>75. magent does not convert lb."
},
"antiplatelet": {
"type": "boolean",
"description": "Caller-assigned antiplatelet therapy (true or false). Bleed +0.236620846. Mortality and stroke have no antiplatelet term. magent does not order antiplatelet therapy."
},
"prior_stroke": {
"type": "boolean",
"description": "Caller-assigned prior stroke (true or false). Mortality +0.26585298; stroke +0.800863063."
},
"heart_failure": {
"type": "boolean",
"description": "Caller-assigned heart failure (true or false). Mortality +0.693789082; stroke +0.233182644. magent does not diagnose heart failure."
},
"current_smoking": {
"type": "boolean",
"description": "Caller-assigned current smoking (true or false). Mortality +0.345481149; stroke +0.478831506."
},
"vascular_disease": {
"type": "boolean",
"description": "Caller-assigned vascular disease (true or false). Mortality +0.306120964; stroke +0.197919709; bleed +0.168950627."
},
"diastolic_bp_mm_hg": {
"type": "number",
"description": "Diastolic blood pressure in mm Hg (30-150). Mortality: -0.019304333*(dbp-80) when dbp<=80; 0 when dbp>80. Stroke: 0.01590016*(dbp-80) when dbp>80; 0 when dbp<=80."
},
"history_of_bleeding": {
"type": "boolean",
"description": "Caller-assigned history of bleeding (true or false). Mortality +0.385407386; stroke +0.29883967; bleed +0.782237771."
},
"moderate_to_severe_ckd": {
"type": "boolean",
"description": "Caller-assigned moderate-to-severe chronic kidney disease (true or false). Mortality +0.377903886; stroke +0.349516938; bleed +0.498686574. magent does not compute eGFR."
},
"carotid_occlusive_disease": {
"type": "boolean",
"description": "Caller-assigned carotid occlusive disease (true or false). Bleed +0.316245771. Mortality and stroke have no carotid term."
}
}
},
"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 07:02Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 13:45Z
- 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. 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/garfield_af, 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.