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.
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"description": "ACR/EULAR 2012 PMR classification (Dasgupta Table 4). Required: age 50–120, bilateral shoulder aching, abnormal CRP or ESR. Score morning stiffness >45 min 2, hip pain or limited ROM 1, RF or ACPA absent 2, other joint pain absent 1. Without ultrasound: max 6, classified iff ≥4. With ultrasound: add shoulder-and-hip 1 and both shoulders 1; max 8, classified iff ≥5. Not a diagnosis (not meant for diagnostic purposes). magent does not assay CRP/ESR/RF/ACPA or perform ultrasound.",
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"iconUrl": "https://api.magentlab.com/favicon.ico"
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"properties": {
"age": {
"type": "integer",
"description": "Age in years as an integer 50–120 (Dasgupta 2012 required criterion: age ≥50). magent does not date the patient."
},
"rf_or_acpa_absent": {
"type": "boolean",
"description": "Absence of RF or ACPA as assigned by the caller (Dasgupta 2012 Table 4). true scores 2; false scores 0. magent does not assay RF or ACPA."
},
"us_both_shoulders": {
"type": "boolean",
"description": "Both shoulders with subdeltoid bursitis, biceps tenosynovitis, or glenohumeral synovitis (Dasgupta 2012). true scores 1. Required when include_ultrasound is true; ignored when false. magent does not perform ultrasound."
},
"include_ultrasound": {
"type": "boolean",
"description": "Use the optional ultrasound algorithm (Dasgupta 2012 Table 4). false: do not require US flags; max 6; classified iff score ≥4. true: require us_shoulder_and_hip and us_both_shoulders; max 8; classified iff score ≥5. magent does not perform ultrasound."
},
"abnormal_crp_or_esr": {
"type": "boolean",
"description": "Must be true. Dasgupta 2012 required criterion: abnormal CRP and/or ESR. false is invalid and is not scored. magent does not assay CRP or ESR."
},
"us_shoulder_and_hip": {
"type": "boolean",
"description": "At least one shoulder with subdeltoid bursitis and/or biceps tenosynovitis and/or glenohumeral synovitis (posterior or axillary) and at least one hip with synovitis and/or trochanteric bursitis (Dasgupta 2012). true scores 1. Required when include_ultrasound is true; ignored when false. magent does not perform ultrasound."
},
"hip_pain_or_limited_rom": {
"type": "boolean",
"description": "Hip pain or limited range of motion (Dasgupta 2012 Table 4). true scores 1; false scores 0. magent does not examine joints."
},
"morning_stiffness_gt_45": {
"type": "boolean",
"description": "Morning stiffness duration >45 min (Dasgupta 2012 Table 4). true scores 2; false scores 0. magent does not take a history."
},
"other_joint_pain_absent": {
"type": "boolean",
"description": "Absence of other/peripheral joint involvement as assigned by the caller (Dasgupta 2012 Table 4). true scores 1; false scores 0. magent does not examine joints."
},
"bilateral_shoulder_aching": {
"type": "boolean",
"description": "Must be true. Dasgupta 2012 required criterion: bilateral shoulder aching. false is invalid and is not scored. magent does not examine joints."
}
}
}
},
"additionalProperties": false
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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.
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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"morning_stiffness_gt_45": true,
"other_joint_pain_absent": true,
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}
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},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/acr_eular_pmr",
"count": 2,
"items": [
{
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"formula": "acr_eular_pmr",
"citation": {
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"title": "2012 provisional classification criteria for polymyalgia rheumatica: a European League Against Rheumatism/American College of Rheumatology collaborative initiative",
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"authors": "Dasgupta B, Cimmino MA, Maradit-Kremers H, Schmidt WA, Schirmer M, Salvarani C, Bachta A, Dejaco C, Duftner C, Jensen HS, Poór G, Kaposi NP, Mandl P, Balint PV, Schmidt Z, Iagnocco A, Nannini C, Cantini F, Macchioni P, Pipitone N, Amo MD, Espígol-Frigolé G, Cid MC, Martínez-Taboada VM, Nordborg E, Direskeneli H, Aydin SZ, Ahmed K, Hazleman B, Silverman B, Pease C, Wakefield RJ, Luqmani R, Abril A, Michet CJ, Mazlumzadeh M, Salvarani C"
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{
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"doi": "10.1136/annrheumdis-2011-200329",
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"title": "2012 provisional classification criteria for polymyalgia rheumatica: a European League Against Rheumatism/American College of Rheumatology collaborative initiative",
"source": "Ann Rheum Dis. 2012;71(4):484-492",
"authors": "Dasgupta B, Cimmino MA, Maradit-Kremers H, Schmidt WA, Schirmer M, Salvarani C, Bachta A, Dejaco C, Duftner C, Jensen HS, Poór G, Kaposi NP, Mandl P, Balint PV, Schmidt Z, Iagnocco A, Nannini C, Cantini F, Macchioni P, Pipitone N, Amo MD, Espígol-Frigolé G, Cid MC, Martínez-Taboada VM, Nordborg E, Direskeneli H, Aydin SZ, Ahmed K, Hazleman B, Silverman B, Pease C, Wakefield RJ, Luqmani R, Abril A, Michet CJ, Mazlumzadeh M, Salvarani C"
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{
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"points": 1,
"present": true
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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": "ACR/EULAR 2012 PMR classification (Dasgupta Table 4): required age 50–120, bilateral_shoulder_aching true, abnormal_crp_or_esr true (else do not score). Score = morning_stiffness_gt_45 2 + hip_pain_or_limited_rom 1 + rf_or_acpa_absent 2 + other_joint_pain_absent 1. Without ultrasound: max 6, classified iff score ≥4. With ultrasound: add us_shoulder_and_hip 1 + us_both_shoulders 1; max 8, classified iff score ≥5. Not a diagnosis (not meant for diagnostic purposes)"
}
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}
},
"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": {
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"required": [
"items"
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"properties": {
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"type": "array",
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"required": [
"age",
"bilateral_shoulder_aching",
"abnormal_crp_or_esr",
"morning_stiffness_gt_45",
"hip_pain_or_limited_rom",
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"other_joint_pain_absent",
"include_ultrasound"
],
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"description": "Age in years as an integer 50–120 (Dasgupta 2012 required criterion: age ≥50). magent does not date the patient."
},
"rf_or_acpa_absent": {
"type": "boolean",
"description": "Absence of RF or ACPA as assigned by the caller (Dasgupta 2012 Table 4). true scores 2; false scores 0. magent does not assay RF or ACPA."
},
"us_both_shoulders": {
"type": "boolean",
"description": "Both shoulders with subdeltoid bursitis, biceps tenosynovitis, or glenohumeral synovitis (Dasgupta 2012). true scores 1. Required when include_ultrasound is true; ignored when false. magent does not perform ultrasound."
},
"include_ultrasound": {
"type": "boolean",
"description": "Use the optional ultrasound algorithm (Dasgupta 2012 Table 4). false: do not require US flags; max 6; classified iff score ≥4. true: require us_shoulder_and_hip and us_both_shoulders; max 8; classified iff score ≥5. magent does not perform ultrasound."
},
"abnormal_crp_or_esr": {
"type": "boolean",
"description": "Must be true. Dasgupta 2012 required criterion: abnormal CRP and/or ESR. false is invalid and is not scored. magent does not assay CRP or ESR."
},
"us_shoulder_and_hip": {
"type": "boolean",
"description": "At least one shoulder with subdeltoid bursitis and/or biceps tenosynovitis and/or glenohumeral synovitis (posterior or axillary) and at least one hip with synovitis and/or trochanteric bursitis (Dasgupta 2012). true scores 1. Required when include_ultrasound is true; ignored when false. magent does not perform ultrasound."
},
"hip_pain_or_limited_rom": {
"type": "boolean",
"description": "Hip pain or limited range of motion (Dasgupta 2012 Table 4). true scores 1; false scores 0. magent does not examine joints."
},
"morning_stiffness_gt_45": {
"type": "boolean",
"description": "Morning stiffness duration >45 min (Dasgupta 2012 Table 4). true scores 2; false scores 0. magent does not take a history."
},
"other_joint_pain_absent": {
"type": "boolean",
"description": "Absence of other/peripheral joint involvement as assigned by the caller (Dasgupta 2012 Table 4). true scores 1; false scores 0. magent does not examine joints."
},
"bilateral_shoulder_aching": {
"type": "boolean",
"description": "Must be true. Dasgupta 2012 required criterion: bilateral shoulder aching. false is invalid and is not scored. magent does not examine joints."
}
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"type": {
"type": "string",
"const": "http"
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"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"
}
}
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}Provenance
- Seen in the source catalog
- 2026-08-31 13:29Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-22 08:45Z
- 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/acr_eular_pmr, 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.