magent
Peterson 2010 GWTG-HF Figure 2 integer points for in-hospital mortality in hospitalized heart failure: age 0-28, systolic BP 0-28, BUN 0-28, sodium 0-4, heart rate 0-8, COPD +2, caller-assigned nonblack (black=false) +3. Total 0-100. magent does not assign race. Not a diagnosis.
Dataofflineeip155:8453Exactvia cdp
Gwtg-hfHeart-failureMortalityHemodynamicsScore
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 03:50Z
—
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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"accepts": [
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"resourceUrl": "https://api.magentlab.com/api/calc/gwtg_hf",
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"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
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{
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"serviceName": "magent"
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"extensions": {
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"doi": "10.1161/CIRCOUTCOMES.109.854877",
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"title": "A validated risk score for in-hospital mortality in patients with heart failure from the American Heart Association Get With the Guidelines Program",
"source": "Circ Cardiovasc Qual Outcomes. 2010;3(1):25-32",
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"factor": "nonblack",
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"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.",
"sodium_mmol_l": 138,
"heart_rate_bpm": 80,
"formula_expression": "GWTG-HF = age (<=19 0, 20-29 3, 30-39 6, 40-49 8, 50-59 11, 60-69 14, 70-79 17, 80-89 19, 90-99 22, 100-109 25, >=110 28) + sbp_mm_hg (50-59 28, 60-69 26, 70-79 24, 80-89 23, 90-99 21, 100-109 19, 110-119 17, 120-129 15, 130-139 13, 140-149 11, 150-159 9, 160-169 8, 170-179 6, 180-189 4, 190-199 2, >=200 0) + bun_mg_dl (<=9 0, 10-19 2, 20-29 4, 30-39 6, 40-49 8, 50-59 9, 60-69 11, 70-79 13, 80-89 15, 90-99 17, 100-109 19, 110-119 21, 120-129 23, 130-139 25, 140-149 27, >=150 28) + sodium_mmol_l (<=130 4, 131-133 3, 134-136 2, 137-138 1, >=139 0) + heart_rate_bpm (<=79 0, 80-84 1, 85-89 3, 90-94 4, 95-99 5, 100-104 6, >=105 8) + copd 2 + nonblack (black=false) 3; Peterson 2010 Figure 2 integer points; total clamped to 0-100"
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
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"schema": {
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"$schema": "https://json-schema.org/draft/2020-12/schema",
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"const": "http"
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"method": {
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"HEAD",
"DELETE"
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"type": "string"
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"headers": {
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}
},
"queryParams": {
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"required": [
"age",
"sbp_mm_hg",
"bun_mg_dl",
"sodium_mmol_l",
"heart_rate_bpm",
"copd",
"black"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Peterson 2010 Figure 2: ≤19 scores 0; 20-29 scores 3; 30-39 scores 6; 40-49 scores 8; 50-59 scores 11; 60-69 scores 14; 70-79 scores 17; 80-89 scores 19; 90-99 scores 22; 100-109 scores 25; ≥110 scores 28."
},
"copd": {
"type": "boolean",
"description": "History of chronic obstructive pulmonary disease as assigned by the caller (Peterson 2010 Figure 2). true scores 2. magent does not diagnose COPD."
},
"black": {
"type": "boolean",
"description": "Caller-assigned black as used in Peterson 2010; magent does not assign race. Nonblack race (false) scores 3. true or false."
},
"bun_mg_dl": {
"type": "integer",
"description": "Admission blood urea nitrogen in mg/dL (integer 1-200). Peterson 2010 Figure 2: ≤9 scores 0; ≥150 scores 28. magent does not assay BUN."
},
"sbp_mm_hg": {
"type": "integer",
"description": "Admission systolic blood pressure in mm Hg (integer 50-250). Peterson 2010 Figure 2: 50-59 scores 28, then lower points as SBP rises, to ≥200 scores 0. magent does not measure blood pressure."
},
"sodium_mmol_l": {
"type": "integer",
"description": "Admission serum sodium in mmol/L (integer 110-160; numerically equal to mEq/L). Peterson 2010 Figure 2: ≤130 scores 4; 131-133 scores 3; 134-136 scores 2; 137-138 scores 1; ≥139 scores 0. magent does not assay sodium."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Admission heart rate in beats per minute (integer 30-220). Peterson 2010 Figure 2: ≤79 scores 0; 80-84 scores 1; 85-89 scores 3; 90-94 scores 4; 95-99 scores 5; 100-104 scores 6; ≥105 scores 8. magent does not measure heart rate."
}
}
}
},
"additionalProperties": false
},
"output": {
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"required": [
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],
"properties": {
"type": {
"type": "string"
},
"example": {
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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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"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/gwtg_hf",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
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"copd": false,
"black": true,
"bun_mg_dl": 20,
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"sodium_mmol_l": 138,
"heart_rate_bpm": 80
},
{
"age": 70,
"copd": false,
"black": true,
"bun_mg_dl": 20,
"sbp_mm_hg": 130,
"sodium_mmol_l": 138,
"heart_rate_bpm": 80
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/gwtg_hf",
"count": 2,
"items": [
{
"age": 70,
"copd": false,
"black": true,
"score": 36,
"formula": "gwtg_hf",
"citation": {
"id": "peterson-2010-gwtg-hf",
"doi": "10.1161/CIRCOUTCOMES.109.854877",
"pmid": "20123668",
"title": "A validated risk score for in-hospital mortality in patients with heart failure from the American Heart Association Get With the Guidelines Program",
"source": "Circ Cardiovasc Qual Outcomes. 2010;3(1):25-32",
"authors": "Peterson PN, Rumsfeld JS, Liang L, Albert NM, Hernandez AF, Peterson ED, Fonarow GC, Masoudi FA"
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"bun_mg_dl": 20,
"max_score": 100,
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"factor": "age",
"points": 17,
"present": true
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{
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"factor": "sbp_mm_hg",
"points": 13,
"present": true
},
{
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"factor": "bun_mg_dl",
"points": 4,
"present": true
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{
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"factor": "sodium_mmol_l",
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{
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],
"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.",
"sodium_mmol_l": 138,
"heart_rate_bpm": 80,
"formula_expression": "GWTG-HF = age (<=19 0, 20-29 3, 30-39 6, 40-49 8, 50-59 11, 60-69 14, 70-79 17, 80-89 19, 90-99 22, 100-109 25, >=110 28) + sbp_mm_hg (50-59 28, 60-69 26, 70-79 24, 80-89 23, 90-99 21, 100-109 19, 110-119 17, 120-129 15, 130-139 13, 140-149 11, 150-159 9, 160-169 8, 170-179 6, 180-189 4, 190-199 2, >=200 0) + bun_mg_dl (<=9 0, 10-19 2, 20-29 4, 30-39 6, 40-49 8, 50-59 9, 60-69 11, 70-79 13, 80-89 15, 90-99 17, 100-109 19, 110-119 21, 120-129 23, 130-139 25, 140-149 27, >=150 28) + sodium_mmol_l (<=130 4, 131-133 3, 134-136 2, 137-138 1, >=139 0) + heart_rate_bpm (<=79 0, 80-84 1, 85-89 3, 90-94 4, 95-99 5, 100-104 6, >=105 8) + copd 2 + nonblack (black=false) 3; Peterson 2010 Figure 2 integer points; total clamped to 0-100"
},
{
"age": 70,
"copd": false,
"black": true,
"score": 36,
"formula": "gwtg_hf",
"citation": {
"id": "peterson-2010-gwtg-hf",
"doi": "10.1161/CIRCOUTCOMES.109.854877",
"pmid": "20123668",
"title": "A validated risk score for in-hospital mortality in patients with heart failure from the American Heart Association Get With the Guidelines Program",
"source": "Circ Cardiovasc Qual Outcomes. 2010;3(1):25-32",
"authors": "Peterson PN, Rumsfeld JS, Liang L, Albert NM, Hernandez AF, Peterson ED, Fonarow GC, Masoudi FA"
},
"bun_mg_dl": 20,
"max_score": 100,
"sbp_mm_hg": 130,
"components": [
{
"value": 70,
"factor": "age",
"points": 17,
"present": true
},
{
"value": 130,
"factor": "sbp_mm_hg",
"points": 13,
"present": true
},
{
"value": 20,
"factor": "bun_mg_dl",
"points": 4,
"present": true
},
{
"value": 138,
"factor": "sodium_mmol_l",
"points": 1,
"present": true
},
{
"value": 80,
"factor": "heart_rate_bpm",
"points": 1,
"present": true
},
{
"factor": "copd",
"points": 0,
"present": false
},
{
"value": true,
"factor": "nonblack",
"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.",
"sodium_mmol_l": 138,
"heart_rate_bpm": 80,
"formula_expression": "GWTG-HF = age (<=19 0, 20-29 3, 30-39 6, 40-49 8, 50-59 11, 60-69 14, 70-79 17, 80-89 19, 90-99 22, 100-109 25, >=110 28) + sbp_mm_hg (50-59 28, 60-69 26, 70-79 24, 80-89 23, 90-99 21, 100-109 19, 110-119 17, 120-129 15, 130-139 13, 140-149 11, 150-159 9, 160-169 8, 170-179 6, 180-189 4, 190-199 2, >=200 0) + bun_mg_dl (<=9 0, 10-19 2, 20-29 4, 30-39 6, 40-49 8, 50-59 9, 60-69 11, 70-79 13, 80-89 15, 90-99 17, 100-109 19, 110-119 21, 120-129 23, 130-139 25, 140-149 27, >=150 28) + sodium_mmol_l (<=130 4, 131-133 3, 134-136 2, 137-138 1, >=139 0) + heart_rate_bpm (<=79 0, 80-84 1, 85-89 3, 90-94 4, 95-99 5, 100-104 6, >=105 8) + copd 2 + nonblack (black=false) 3; Peterson 2010 Figure 2 integer points; total clamped to 0-100"
}
]
}
},
"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",
"sbp_mm_hg",
"bun_mg_dl",
"sodium_mmol_l",
"heart_rate_bpm",
"copd",
"black"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Peterson 2010 Figure 2: ≤19 scores 0; 20-29 scores 3; 30-39 scores 6; 40-49 scores 8; 50-59 scores 11; 60-69 scores 14; 70-79 scores 17; 80-89 scores 19; 90-99 scores 22; 100-109 scores 25; ≥110 scores 28."
},
"copd": {
"type": "boolean",
"description": "History of chronic obstructive pulmonary disease as assigned by the caller (Peterson 2010 Figure 2). true scores 2. magent does not diagnose COPD."
},
"black": {
"type": "boolean",
"description": "Caller-assigned black as used in Peterson 2010; magent does not assign race. Nonblack race (false) scores 3. true or false."
},
"bun_mg_dl": {
"type": "integer",
"description": "Admission blood urea nitrogen in mg/dL (integer 1-200). Peterson 2010 Figure 2: ≤9 scores 0; ≥150 scores 28. magent does not assay BUN."
},
"sbp_mm_hg": {
"type": "integer",
"description": "Admission systolic blood pressure in mm Hg (integer 50-250). Peterson 2010 Figure 2: 50-59 scores 28, then lower points as SBP rises, to ≥200 scores 0. magent does not measure blood pressure."
},
"sodium_mmol_l": {
"type": "integer",
"description": "Admission serum sodium in mmol/L (integer 110-160; numerically equal to mEq/L). Peterson 2010 Figure 2: ≤130 scores 4; 131-133 scores 3; 134-136 scores 2; 137-138 scores 1; ≥139 scores 0. magent does not assay sodium."
},
"heart_rate_bpm": {
"type": "integer",
"description": "Admission heart rate in beats per minute (integer 30-220). Peterson 2010 Figure 2: ≤79 scores 0; 80-84 scores 1; 85-89 scores 3; 90-94 scores 4; 95-99 scores 5; 100-104 scores 6; ≥105 scores 8. magent does not measure heart rate."
}
}
},
"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": {
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}
}
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}
}
}Provenance
- Seen in the source catalog
- 2026-09-04 03:50Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 15:15Z
- 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/gwtg_hf, 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.