magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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/aua_si",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
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{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
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"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
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],
"resource": {
"url": "https://api.magentlab.com/api/calc/aua_si",
"tags": [
"aua-si",
"bph",
"luts",
"urology",
"calculator"
],
"mimeType": "application/json",
"description": "Barry 1992 AUA-SI: seven caller-assigned integers 0-5 for incomplete emptying, frequency, intermittency, urgency, weak stream, straining (hesitancy), and nocturia. Sum 0-35. magent does not take a voiding history. Barry 1992 published no mild/moderate/severe total-score bands; later AUA-guideline 0-7/8-19/20-35 cuts are not applied. Not the 8-item IPSS quality-of-life question, not a BPH treatment order, and not a medical device.",
"serviceName": "magent"
},
"extensions": {
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}
},
"output": {
"type": "json",
"example": {
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"formula": "aua_si",
"citation": {
"id": "barry-1992",
"doi": "10.1016/S0022-5347(17)36966-5",
"pmid": "1279218",
"title": "The American Urological Association symptom index for benign prostatic hyperplasia",
"source": "J Urol. 1992;148(5):1549-1557",
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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.",
"formula_expression": "AUA-SI = incomplete_emptying + frequency + intermittency + urgency + weak_stream + straining + nocturia; each caller-assigned 0-5; max 35; Barry 1992; no total-score severity bands; not IPSS quality-of-life item"
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
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"schema": {
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"intermittency",
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"weak_stream",
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],
"properties": {
"urgency": {
"type": "integer",
"description": "Caller-assigned Barry 1992 urgency (integer 0-5: 0 not at all to 5 almost always): difficulty postponing urination. magent does not take a voiding history."
},
"nocturia": {
"type": "integer",
"description": "Caller-assigned Barry 1992 nocturia (integer 0-5: 0 none, 1 one time, 2 two times, 3 three times, 4 four times, 5 five or more times): times typically getting up to urinate from bedtime until morning. magent does not take a voiding history."
},
"frequency": {
"type": "integer",
"description": "Caller-assigned Barry 1992 frequency (integer 0-5: 0 not at all to 5 almost always): urinating again less than two hours after finishing. magent does not take a voiding history."
},
"straining": {
"type": "integer",
"description": "Caller-assigned Barry 1992 hesitancy/straining (integer 0-5: 0 not at all to 5 almost always): push or strain to begin urination. magent does not take a voiding history."
},
"weak_stream": {
"type": "integer",
"description": "Caller-assigned Barry 1992 weak urinary stream (integer 0-5: 0 not at all to 5 almost always). magent does not take a voiding history."
},
"intermittency": {
"type": "integer",
"description": "Caller-assigned Barry 1992 intermittency (integer 0-5: 0 not at all to 5 almost always): stopping and starting again several times when urinating. magent does not take a voiding history."
},
"incomplete_emptying": {
"type": "integer",
"description": "Caller-assigned Barry 1992 incomplete emptying (integer 0-5: 0 not at all, 1 less than 1 time in 5, 2 less than half the time, 3 about half the time, 4 more than half the time, 5 almost always): sensation of not emptying the bladder completely after finishing urination. magent does not take a voiding history."
}
}
}
},
"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.
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/aua_si",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"urgency": 0,
"nocturia": 0,
"frequency": 0,
"straining": 0,
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"intermittency": 0,
"incomplete_emptying": 0
},
{
"urgency": 0,
"nocturia": 0,
"frequency": 0,
"straining": 0,
"weak_stream": 0,
"intermittency": 0,
"incomplete_emptying": 0
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/aua_si",
"count": 2,
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"source": "J Urol. 1992;148(5):1549-1557",
"authors": "Barry MJ, Fowler FJ Jr, O'Leary MP, Bruskewitz RC, Holtgrewe HL, Mebust WK, Cockett AT"
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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.",
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},
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"id": "barry-1992",
"doi": "10.1016/S0022-5347(17)36966-5",
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"title": "The American Urological Association symptom index for benign prostatic hyperplasia",
"source": "J Urol. 1992;148(5):1549-1557",
"authors": "Barry MJ, Fowler FJ Jr, O'Leary MP, Bruskewitz RC, Holtgrewe HL, Mebust WK, Cockett AT"
},
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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.",
"formula_expression": "AUA-SI = incomplete_emptying + frequency + intermittency + urgency + weak_stream + straining + nocturia; each caller-assigned 0-5; max 35; Barry 1992; no total-score severity bands; not IPSS quality-of-life item"
}
]
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
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"type",
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"properties": {
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"type": "array",
"items": {
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"required": [
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"frequency",
"intermittency",
"urgency",
"weak_stream",
"straining",
"nocturia"
],
"properties": {
"urgency": {
"type": "integer",
"description": "Caller-assigned Barry 1992 urgency (integer 0-5: 0 not at all to 5 almost always): difficulty postponing urination. magent does not take a voiding history."
},
"nocturia": {
"type": "integer",
"description": "Caller-assigned Barry 1992 nocturia (integer 0-5: 0 none, 1 one time, 2 two times, 3 three times, 4 four times, 5 five or more times): times typically getting up to urinate from bedtime until morning. magent does not take a voiding history."
},
"frequency": {
"type": "integer",
"description": "Caller-assigned Barry 1992 frequency (integer 0-5: 0 not at all to 5 almost always): urinating again less than two hours after finishing. magent does not take a voiding history."
},
"straining": {
"type": "integer",
"description": "Caller-assigned Barry 1992 hesitancy/straining (integer 0-5: 0 not at all to 5 almost always): push or strain to begin urination. magent does not take a voiding history."
},
"weak_stream": {
"type": "integer",
"description": "Caller-assigned Barry 1992 weak urinary stream (integer 0-5: 0 not at all to 5 almost always). magent does not take a voiding history."
},
"intermittency": {
"type": "integer",
"description": "Caller-assigned Barry 1992 intermittency (integer 0-5: 0 not at all to 5 almost always): stopping and starting again several times when urinating. magent does not take a voiding history."
},
"incomplete_emptying": {
"type": "integer",
"description": "Caller-assigned Barry 1992 incomplete emptying (integer 0-5: 0 not at all, 1 less than 1 time in 5, 2 less than half the time, 3 about half the time, 4 more than half the time, 5 almost always): sensation of not emptying the bladder completely after finishing urination. magent does not take a voiding history."
}
}
},
"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 13:33Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-22 21:45Z
- 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. 9 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/aua_si, 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.