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 2010 RA classification (Aletaha Table 3). Required: clinical_synovitis true. Score: joint involvement 0/1/2/3/5 + serology 0/2/3 + abnormal CRP or ESR 1 + duration ≥6 weeks 1; max 10. classified false if another disease better explains synovitis; else true if typical RA erosions or score ≥6. Not a diagnosis. Not 1987 ACR RA. Not SDAI. magent does not examine joints or titer RF/ACPA.",
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"doi": "10.1136/ard.2010.138461",
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"title": "2010 Rheumatoid arthritis classification criteria: an American College of Rheumatology/European League Against Rheumatism collaborative initiative",
"source": "Ann Rheum Dis. 2010;69(9):1580-1588",
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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 2010 RA classification (Aletaha Table 3): required clinical_synovitis true (at least one joint with definite clinical synovitis/swelling; else do not score). Score = joint_involvement (one_large 0, two_to_ten_large 1, one_to_three_small 2, four_to_ten_small 3, gt_ten_with_small 5) + serology (negative 0, low_positive 2, high_positive 3) + abnormal_apr 1 + duration_ge_6_weeks 1; max 10. classified false if alternative_diagnosis_better; else true if erosive_disease_typical_of_ra or score ≥6. Not a diagnosis. Not 1987 ACR RA. Not SDAI"
}
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"iconUrl": "https://api.magentlab.com/favicon.ico"
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"required": [
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"properties": {
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"const": "http"
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"headers": {
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"serology",
"abnormal_apr",
"duration_ge_6_weeks"
],
"properties": {
"serology": {
"enum": [
"negative",
"low_positive",
"high_positive"
],
"type": "string",
"description": "Caller-assigned Aletaha 2010 Table 3 serology row (at least one RF or ACPA test). High-positive RF or ACPA takes the high row. negative scores 0; low_positive scores 2; high_positive scores 3. magent does not titer RF or ACPA."
},
"abnormal_apr": {
"type": "boolean",
"description": "Abnormal CRP or ESR as assigned by the caller (Aletaha 2010 Table 3). true scores 1; false (normal CRP and ESR) scores 0. magent does not assay CRP or ESR."
},
"joint_involvement": {
"enum": [
"one_large",
"two_to_ten_large",
"one_to_three_small",
"four_to_ten_small",
"gt_ten_with_small"
],
"type": "string",
"description": "Caller-assigned highest Aletaha 2010 Table 3 joint-involvement category. magent does not count joints. Large = shoulders, elbows, hips, knees, ankles. Small = MCP, PIP, 2nd–5th MTP, thumb IP, wrists. DIP, 1st CMC, and 1st MTP are excluded. one_large scores 0; two_to_ten_large scores 1; one_to_three_small (with or without large) scores 2; four_to_ten_small (with or without large) scores 3; gt_ten_with_small (>10 joints, at least 1 small) scores 5."
},
"clinical_synovitis": {
"type": "boolean",
"description": "Must be true. Aletaha 2010 entry: at least one joint with definite clinical synovitis (swelling) as assigned by the caller. false is invalid and is not classified=false. magent does not examine joints."
},
"duration_ge_6_weeks": {
"type": "boolean",
"description": "Duration of symptoms ≥6 weeks as assigned by the caller (Aletaha 2010 Table 3). true scores 1; false scores 0. magent does not date symptom onset."
},
"alternative_diagnosis_better": {
"type": "boolean",
"description": "Synovitis better explained by another disease (Aletaha 2010 target population). true still returns the Table 3 score but classified is false. magent does not assign an alternative diagnosis."
},
"erosive_disease_typical_of_ra": {
"type": "boolean",
"description": "Erosive disease typical of RA with a history compatible with prior fulfillment of the 2010 criteria (Aletaha 2010 footnote). true classifies even if score <6. magent does not read films."
}
}
}
},
"additionalProperties": false
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},
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}
}
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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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},
{
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"joint_involvement": "four_to_ten_small",
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"duration_ge_6_weeks": true,
"alternative_diagnosis_better": false,
"erosive_disease_typical_of_ra": false
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},
"type": "http",
"method": "POST"
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"output": {
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"example": {
"path": "/api/calc/acr_eular_ra",
"count": 2,
"items": [
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"band": "classified",
"score": 8,
"formula": "acr_eular_ra",
"citation": {
"id": "aletaha-2010",
"doi": "10.1136/ard.2010.138461",
"pmid": "20699241",
"title": "2010 Rheumatoid arthritis classification criteria: an American College of Rheumatology/European League Against Rheumatism collaborative initiative",
"source": "Ann Rheum Dis. 2010;69(9):1580-1588",
"authors": "Aletaha D, Neogi T, Silman AJ, Funovits J, Felson DT, Bingham CO 3rd, Birnbaum NS, Burmester GR, Bykerk VP, Cohen MD, Combe B, Costenbader KH, Dougados M, Emery P, Ferraccioli G, Hazes JMW, Hobbs K, Huizinga TWJ, Kavanaugh A, Kay J, Kvien TK, Laing T, Mease P, Ménard HA, Moreland LW, Naden RP, Pincus T, Smolen JS, Stanislawska-Biernat E, Symmons D, Tak PP, Upchurch KS, Vencovský J, Wolfe F, Hawker G"
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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 2010 RA classification (Aletaha Table 3): required clinical_synovitis true (at least one joint with definite clinical synovitis/swelling; else do not score). Score = joint_involvement (one_large 0, two_to_ten_large 1, one_to_three_small 2, four_to_ten_small 3, gt_ten_with_small 5) + serology (negative 0, low_positive 2, high_positive 3) + abnormal_apr 1 + duration_ge_6_weeks 1; max 10. classified false if alternative_diagnosis_better; else true if erosive_disease_typical_of_ra or score ≥6. Not a diagnosis. Not 1987 ACR RA. Not SDAI"
},
{
"band": "classified",
"score": 8,
"formula": "acr_eular_ra",
"citation": {
"id": "aletaha-2010",
"doi": "10.1136/ard.2010.138461",
"pmid": "20699241",
"title": "2010 Rheumatoid arthritis classification criteria: an American College of Rheumatology/European League Against Rheumatism collaborative initiative",
"source": "Ann Rheum Dis. 2010;69(9):1580-1588",
"authors": "Aletaha D, Neogi T, Silman AJ, Funovits J, Felson DT, Bingham CO 3rd, Birnbaum NS, Burmester GR, Bykerk VP, Cohen MD, Combe B, Costenbader KH, Dougados M, Emery P, Ferraccioli G, Hazes JMW, Hobbs K, Huizinga TWJ, Kavanaugh A, Kay J, Kvien TK, Laing T, Mease P, Ménard HA, Moreland LW, Naden RP, Pincus T, Smolen JS, Stanislawska-Biernat E, Symmons D, Tak PP, Upchurch KS, Vencovský J, Wolfe F, Hawker G"
},
"max_score": 10,
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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.",
"formula_expression": "ACR/EULAR 2010 RA classification (Aletaha Table 3): required clinical_synovitis true (at least one joint with definite clinical synovitis/swelling; else do not score). Score = joint_involvement (one_large 0, two_to_ten_large 1, one_to_three_small 2, four_to_ten_small 3, gt_ten_with_small 5) + serology (negative 0, low_positive 2, high_positive 3) + abnormal_apr 1 + duration_ge_6_weeks 1; max 10. classified false if alternative_diagnosis_better; else true if erosive_disease_typical_of_ra or score ≥6. Not a diagnosis. Not 1987 ACR RA. Not SDAI"
}
]
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
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],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
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"properties": {
"body": {
"type": "object",
"required": [
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"properties": {
"items": {
"type": "array",
"items": {
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"required": [
"clinical_synovitis",
"alternative_diagnosis_better",
"erosive_disease_typical_of_ra",
"joint_involvement",
"serology",
"abnormal_apr",
"duration_ge_6_weeks"
],
"properties": {
"serology": {
"enum": [
"negative",
"low_positive",
"high_positive"
],
"type": "string",
"description": "Caller-assigned Aletaha 2010 Table 3 serology row (at least one RF or ACPA test). High-positive RF or ACPA takes the high row. negative scores 0; low_positive scores 2; high_positive scores 3. magent does not titer RF or ACPA."
},
"abnormal_apr": {
"type": "boolean",
"description": "Abnormal CRP or ESR as assigned by the caller (Aletaha 2010 Table 3). true scores 1; false (normal CRP and ESR) scores 0. magent does not assay CRP or ESR."
},
"joint_involvement": {
"enum": [
"one_large",
"two_to_ten_large",
"one_to_three_small",
"four_to_ten_small",
"gt_ten_with_small"
],
"type": "string",
"description": "Caller-assigned highest Aletaha 2010 Table 3 joint-involvement category. magent does not count joints. Large = shoulders, elbows, hips, knees, ankles. Small = MCP, PIP, 2nd–5th MTP, thumb IP, wrists. DIP, 1st CMC, and 1st MTP are excluded. one_large scores 0; two_to_ten_large scores 1; one_to_three_small (with or without large) scores 2; four_to_ten_small (with or without large) scores 3; gt_ten_with_small (>10 joints, at least 1 small) scores 5."
},
"clinical_synovitis": {
"type": "boolean",
"description": "Must be true. Aletaha 2010 entry: at least one joint with definite clinical synovitis (swelling) as assigned by the caller. false is invalid and is not classified=false. magent does not examine joints."
},
"duration_ge_6_weeks": {
"type": "boolean",
"description": "Duration of symptoms ≥6 weeks as assigned by the caller (Aletaha 2010 Table 3). true scores 1; false scores 0. magent does not date symptom onset."
},
"alternative_diagnosis_better": {
"type": "boolean",
"description": "Synovitis better explained by another disease (Aletaha 2010 target population). true still returns the Table 3 score but classified is false. magent does not assign an alternative diagnosis."
},
"erosive_disease_typical_of_ra": {
"type": "boolean",
"description": "Erosive disease typical of RA with a history compatible with prior fulfillment of the 2010 criteria (Aletaha 2010 footnote). true classifies even if score <6. magent does not read films."
}
}
},
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}
},
"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 13:30Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-22 15:15Z
- 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_ra, 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.