magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
OtherLiveeip155:8453Exactvia cdp
Cambridge-diabetesDiabetes-riskGlucoseCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 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 2026-08-31 13:11Z
—
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/cambridge_diabetes",
"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/cambridge_diabetes",
"tags": [
"cambridge-diabetes",
"diabetes-risk",
"glucose",
"calculator"
],
"mimeType": "application/json",
"description": "Griffin 2000 Cambridge logistic risk of undetected type 2 diabetes. p = 1/(1+e^(-λ)); λ = -6.322 - 0.879 if female + 1.222 antihypertensive + 2.191 steroids + 0.063×age + BMI band (<25 0; 25 to <27.5 0.699; 27.5 to <30 1.97; ≥30 2.518) + family (parent or sibling 0.728; parent and sibling 0.753) + smoking (former -0.218; current 0.855). Age 40-64. Probability 0-1. Not FINDRISC, not ADA, not a glucose assay, not a diagnosis.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 50,
"sex": "male",
"smoking": "never",
"steroids": false,
"bmi_kg_m2": 24,
"family_history": "none",
"antihypertensive": false
}
},
"output": {
"type": "json",
"example": {
"sex": "male",
"formula": "cambridge_diabetes",
"smoking": "never",
"citation": {
"id": "griffin-2000",
"doi": "10.1002/1520-7560(200005/06)16:3<164::AID-DMRR103>3.0.CO;2-R",
"pmid": "10867715",
"title": "Diabetes risk score: towards earlier detection of type 2 diabetes in general practice",
"source": "Diabetes Metab Res Rev. 2000;16(3):164-171",
"authors": "Griffin SJ, Little PS, Hales CN, Kinmonth AL, Wareham NJ"
},
"steroids": false,
"age_years": 50,
"bmi_kg_m2": 24,
"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.",
"probability": 0.0402,
"family_history": "none",
"antihypertensive": false,
"linear_predictor": -3.172,
"formula_expression": "p = 1/(1+e^(-λ)); λ = -6.322 -0.879*(sex=female) + 1.222*antihypertensive + 2.191*steroids + 0.063*age + bmi + family + smoking; BMI <25 -> 0, >=25 and <27.5 -> 0.699, >=27.5 and <30 -> 1.97, >=30 -> 2.518; family none 0, parent_or_sibling 0.728, parent_and_sibling 0.753; smoking never 0, former -0.218, current 0.855; Griffin 2000 logistic risk of undetected type 2 diabetes; age 40-64"
}
},
"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",
"sex",
"bmi_kg_m2",
"antihypertensive",
"steroids",
"family_history",
"smoking"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years. Griffin 2000 derivation was ages 40-64; magent accepts that published range only. Continuous linear predictor at 0.063 per year."
},
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "female or male. Griffin 2000 female coefficient is -0.879; male is the reference (0)."
},
"smoking": {
"enum": [
"never",
"former",
"current"
],
"type": "string",
"description": "Smoking history (Griffin 2000). never (nonsmoker) 0; former (ex-smoker) -0.218; current 0.855. magent does not take a smoking history."
},
"steroids": {
"type": "boolean",
"description": "Prescribed steroids as assigned by the caller (Griffin 2000). true adds 2.191; false adds 0. magent does not read a medication list."
},
"bmi_kg_m2": {
"type": "number",
"description": "Body-mass index in kg/m^2 (10-80, magent clamp). Caller-supplied; magent does not compute BMI from height and weight. Griffin 2000: <25 -> 0; >=25 and <27.5 -> 0.699; >=27.5 and <30 -> 1.97; >=30 -> 2.518."
},
"family_history": {
"enum": [
"none",
"parent_or_sibling",
"parent_and_sibling"
],
"type": "string",
"description": "First-degree family history of diabetes (Griffin 2000). none 0; parent_or_sibling 0.728 (parent or sibling, not both); parent_and_sibling 0.753 (parent and sibling). magent does not take a pedigree."
},
"antihypertensive": {
"type": "boolean",
"description": "Prescribed antihypertensive medication as assigned by the caller (Griffin 2000). true adds 1.222; false adds 0. magent does not read a medication list."
}
}
}
},
"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/cambridge_diabetes",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 50,
"sex": "male",
"smoking": "never",
"steroids": false,
"bmi_kg_m2": 24,
"family_history": "none",
"antihypertensive": false
},
{
"age": 50,
"sex": "male",
"smoking": "never",
"steroids": false,
"bmi_kg_m2": 24,
"family_history": "none",
"antihypertensive": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/cambridge_diabetes",
"count": 2,
"items": [
{
"sex": "male",
"formula": "cambridge_diabetes",
"smoking": "never",
"citation": {
"id": "griffin-2000",
"doi": "10.1002/1520-7560(200005/06)16:3<164::AID-DMRR103>3.0.CO;2-R",
"pmid": "10867715",
"title": "Diabetes risk score: towards earlier detection of type 2 diabetes in general practice",
"source": "Diabetes Metab Res Rev. 2000;16(3):164-171",
"authors": "Griffin SJ, Little PS, Hales CN, Kinmonth AL, Wareham NJ"
},
"steroids": false,
"age_years": 50,
"bmi_kg_m2": 24,
"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.",
"probability": 0.0402,
"family_history": "none",
"antihypertensive": false,
"linear_predictor": -3.172,
"formula_expression": "p = 1/(1+e^(-λ)); λ = -6.322 -0.879*(sex=female) + 1.222*antihypertensive + 2.191*steroids + 0.063*age + bmi + family + smoking; BMI <25 -> 0, >=25 and <27.5 -> 0.699, >=27.5 and <30 -> 1.97, >=30 -> 2.518; family none 0, parent_or_sibling 0.728, parent_and_sibling 0.753; smoking never 0, former -0.218, current 0.855; Griffin 2000 logistic risk of undetected type 2 diabetes; age 40-64"
},
{
"sex": "male",
"formula": "cambridge_diabetes",
"smoking": "never",
"citation": {
"id": "griffin-2000",
"doi": "10.1002/1520-7560(200005/06)16:3<164::AID-DMRR103>3.0.CO;2-R",
"pmid": "10867715",
"title": "Diabetes risk score: towards earlier detection of type 2 diabetes in general practice",
"source": "Diabetes Metab Res Rev. 2000;16(3):164-171",
"authors": "Griffin SJ, Little PS, Hales CN, Kinmonth AL, Wareham NJ"
},
"steroids": false,
"age_years": 50,
"bmi_kg_m2": 24,
"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.",
"probability": 0.0402,
"family_history": "none",
"antihypertensive": false,
"linear_predictor": -3.172,
"formula_expression": "p = 1/(1+e^(-λ)); λ = -6.322 -0.879*(sex=female) + 1.222*antihypertensive + 2.191*steroids + 0.063*age + bmi + family + smoking; BMI <25 -> 0, >=25 and <27.5 -> 0.699, >=27.5 and <30 -> 1.97, >=30 -> 2.518; family none 0, parent_or_sibling 0.728, parent_and_sibling 0.753; smoking never 0, former -0.218, current 0.855; Griffin 2000 logistic risk of undetected type 2 diabetes; age 40-64"
}
]
}
},
"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",
"sex",
"bmi_kg_m2",
"antihypertensive",
"steroids",
"family_history",
"smoking"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years. Griffin 2000 derivation was ages 40-64; magent accepts that published range only. Continuous linear predictor at 0.063 per year."
},
"sex": {
"enum": [
"female",
"male"
],
"type": "string",
"description": "female or male. Griffin 2000 female coefficient is -0.879; male is the reference (0)."
},
"smoking": {
"enum": [
"never",
"former",
"current"
],
"type": "string",
"description": "Smoking history (Griffin 2000). never (nonsmoker) 0; former (ex-smoker) -0.218; current 0.855. magent does not take a smoking history."
},
"steroids": {
"type": "boolean",
"description": "Prescribed steroids as assigned by the caller (Griffin 2000). true adds 2.191; false adds 0. magent does not read a medication list."
},
"bmi_kg_m2": {
"type": "number",
"description": "Body-mass index in kg/m^2 (10-80, magent clamp). Caller-supplied; magent does not compute BMI from height and weight. Griffin 2000: <25 -> 0; >=25 and <27.5 -> 0.699; >=27.5 and <30 -> 1.97; >=30 -> 2.518."
},
"family_history": {
"enum": [
"none",
"parent_or_sibling",
"parent_and_sibling"
],
"type": "string",
"description": "First-degree family history of diabetes (Griffin 2000). none 0; parent_or_sibling 0.728 (parent or sibling, not both); parent_and_sibling 0.753 (parent and sibling). magent does not take a pedigree."
},
"antihypertensive": {
"type": "boolean",
"description": "Prescribed antihypertensive medication as assigned by the caller (Griffin 2000). true adds 1.222; false adds 0. magent does not read a medication list."
}
}
},
"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 13:11Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-22 17:45Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 402
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. 10 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/cambridge_diabetes, 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.