magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Inferenceofflineeip155:8453Exactvia cdp
OhtsPoagOcular-hypertensionGlaucomaCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 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 2026-09-03 00:14Z
—
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/ohts",
"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/ohts",
"tags": [
"ohts",
"poag",
"ocular-hypertension",
"glaucoma",
"calculator"
],
"mimeType": "application/json",
"description": "OHTS-EGPS 2007 Table 6: 5-year primary open-angle glaucoma risk in untreated ocular hypertension from age, mean IOP (mm Hg), mean central corneal thickness (microns), mean vertical cup-disc ratio, and mean Humphrey pattern standard deviation (dB). Point bands map to 4%, 10%, 15%, 20%, or 33%. No race (dropped in the multivariate model). No diabetes term. Not a glaucoma diagnosis or drop order. magent does not measure IOP or pachymetry.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 55,
"psd_db": 2.2,
"iop_mm_hg": 24,
"cct_microns": 540,
"vertical_cd_ratio": 0.4
}
},
"output": {
"type": "json",
"example": {
"age": 55,
"points": 11,
"psd_db": 2.2,
"formula": "ohts",
"citation": {
"id": "ohts-egps-2007",
"doi": "10.1016/j.ophtha.2006.08.031",
"pmid": "17070597",
"title": "A validated prediction model for the development of primary open-angle glaucoma in individuals with ocular hypertension",
"source": "Ophthalmology. 2007;114(1):10-19",
"authors": "Ocular Hypertension Treatment Study Group; European Glaucoma Prevention Study Group; Gordon MO, Torri V, Miglior S, Beiser JA, Floriani I, Miller JP, Gao F, Adamsons I, Poli D, D'Agostino RB, Kass MA"
},
"iop_mm_hg": 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.",
"cct_microns": 540,
"risk_5y_percent": 20,
"vertical_cd_ratio": 0.4,
"formula_expression": "OHTS-EGPS 2007 Table 6 points: age <45=0, 45 to <55=1, 55 to <65=2, 65 to <75=3, >=75=4; mean IOP mm Hg <22=0, 22 to <24=1, 24 to <26=2, 26 to <28=3, >=28=4; mean CCT microns >=600=0, 576 to <600=1, 551 to <576=2, 526 to <551=3, <=525=4; mean vertical cup-disc ratio <0.3=0, 0.3 to <0.4=1, 0.4 to <0.5=2, 0.5 to <0.6=3, >=0.6=4; mean Humphrey PSD dB <1.8=0, 1.8 to <2.0=1, 2 to <2.4=2, 2.4 to <2.8=3, >=2.8=4; sum 0-6 -> 4.0% (<=4.0%), 7-8 -> 10%, 9-10 -> 15%, 11-12 -> 20%, >12 -> 33% (>=33%); no race; no diabetes; not a glaucoma diagnosis"
}
},
"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",
"iop_mm_hg",
"cct_microns",
"vertical_cd_ratio",
"psd_db"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 30-80). OHTS enrolled 40-80; EGPS enrolled age >30. magent accepts 30-80 only. Table 6: <45=0, 45 to <55=1, 55 to <65=2, 65 to <75=3, >=75=4."
},
"psd_db": {
"type": "number",
"description": "Mean Humphrey pattern standard deviation in dB (0.5-8), average of the two eyes. Table 6: <1.8=0, 1.8 to <2.0=1, 2 to <2.4=2, 2.4 to <2.8=3, >=2.8=4. magent does not run perimetry."
},
"iop_mm_hg": {
"type": "number",
"description": "Mean untreated intraocular pressure in mm Hg (20-32), average of the two eyes after multiple Goldmann readings as in the paper. Table 6: <22=0, 22 to <24=1, 24 to <26=2, 26 to <28=3, >=28=4. magent does not measure IOP."
},
"cct_microns": {
"type": "number",
"description": "Mean central corneal thickness in microns (475-650), average of the two eyes. Table 6: >=600=0, 576 to <600=1, 551 to <576=2, 526 to <551=3, <=525=4. magent does not perform pachymetry."
},
"vertical_cd_ratio": {
"type": "number",
"description": "Mean vertical cup-disc ratio by contour (0-1), average of the two eyes. Table 6: <0.3=0, 0.3 to <0.4=1, 0.4 to <0.5=2, 0.5 to <0.6=3, >=0.6=4. magent does not grade the disc."
}
}
}
},
"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/ohts",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 55,
"psd_db": 2.2,
"iop_mm_hg": 24,
"cct_microns": 540,
"vertical_cd_ratio": 0.4
},
{
"age": 55,
"psd_db": 2.2,
"iop_mm_hg": 24,
"cct_microns": 540,
"vertical_cd_ratio": 0.4
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/ohts",
"count": 2,
"items": [
{
"age": 55,
"points": 11,
"psd_db": 2.2,
"formula": "ohts",
"citation": {
"id": "ohts-egps-2007",
"doi": "10.1016/j.ophtha.2006.08.031",
"pmid": "17070597",
"title": "A validated prediction model for the development of primary open-angle glaucoma in individuals with ocular hypertension",
"source": "Ophthalmology. 2007;114(1):10-19",
"authors": "Ocular Hypertension Treatment Study Group; European Glaucoma Prevention Study Group; Gordon MO, Torri V, Miglior S, Beiser JA, Floriani I, Miller JP, Gao F, Adamsons I, Poli D, D'Agostino RB, Kass MA"
},
"iop_mm_hg": 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.",
"cct_microns": 540,
"risk_5y_percent": 20,
"vertical_cd_ratio": 0.4,
"formula_expression": "OHTS-EGPS 2007 Table 6 points: age <45=0, 45 to <55=1, 55 to <65=2, 65 to <75=3, >=75=4; mean IOP mm Hg <22=0, 22 to <24=1, 24 to <26=2, 26 to <28=3, >=28=4; mean CCT microns >=600=0, 576 to <600=1, 551 to <576=2, 526 to <551=3, <=525=4; mean vertical cup-disc ratio <0.3=0, 0.3 to <0.4=1, 0.4 to <0.5=2, 0.5 to <0.6=3, >=0.6=4; mean Humphrey PSD dB <1.8=0, 1.8 to <2.0=1, 2 to <2.4=2, 2.4 to <2.8=3, >=2.8=4; sum 0-6 -> 4.0% (<=4.0%), 7-8 -> 10%, 9-10 -> 15%, 11-12 -> 20%, >12 -> 33% (>=33%); no race; no diabetes; not a glaucoma diagnosis"
},
{
"age": 55,
"points": 11,
"psd_db": 2.2,
"formula": "ohts",
"citation": {
"id": "ohts-egps-2007",
"doi": "10.1016/j.ophtha.2006.08.031",
"pmid": "17070597",
"title": "A validated prediction model for the development of primary open-angle glaucoma in individuals with ocular hypertension",
"source": "Ophthalmology. 2007;114(1):10-19",
"authors": "Ocular Hypertension Treatment Study Group; European Glaucoma Prevention Study Group; Gordon MO, Torri V, Miglior S, Beiser JA, Floriani I, Miller JP, Gao F, Adamsons I, Poli D, D'Agostino RB, Kass MA"
},
"iop_mm_hg": 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.",
"cct_microns": 540,
"risk_5y_percent": 20,
"vertical_cd_ratio": 0.4,
"formula_expression": "OHTS-EGPS 2007 Table 6 points: age <45=0, 45 to <55=1, 55 to <65=2, 65 to <75=3, >=75=4; mean IOP mm Hg <22=0, 22 to <24=1, 24 to <26=2, 26 to <28=3, >=28=4; mean CCT microns >=600=0, 576 to <600=1, 551 to <576=2, 526 to <551=3, <=525=4; mean vertical cup-disc ratio <0.3=0, 0.3 to <0.4=1, 0.4 to <0.5=2, 0.5 to <0.6=3, >=0.6=4; mean Humphrey PSD dB <1.8=0, 1.8 to <2.0=1, 2 to <2.4=2, 2.4 to <2.8=3, >=2.8=4; sum 0-6 -> 4.0% (<=4.0%), 7-8 -> 10%, 9-10 -> 15%, 11-12 -> 20%, >12 -> 33% (>=33%); no race; no diabetes; not a glaucoma diagnosis"
}
]
}
},
"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",
"iop_mm_hg",
"cct_microns",
"vertical_cd_ratio",
"psd_db"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 30-80). OHTS enrolled 40-80; EGPS enrolled age >30. magent accepts 30-80 only. Table 6: <45=0, 45 to <55=1, 55 to <65=2, 65 to <75=3, >=75=4."
},
"psd_db": {
"type": "number",
"description": "Mean Humphrey pattern standard deviation in dB (0.5-8), average of the two eyes. Table 6: <1.8=0, 1.8 to <2.0=1, 2 to <2.4=2, 2.4 to <2.8=3, >=2.8=4. magent does not run perimetry."
},
"iop_mm_hg": {
"type": "number",
"description": "Mean untreated intraocular pressure in mm Hg (20-32), average of the two eyes after multiple Goldmann readings as in the paper. Table 6: <22=0, 22 to <24=1, 24 to <26=2, 26 to <28=3, >=28=4. magent does not measure IOP."
},
"cct_microns": {
"type": "number",
"description": "Mean central corneal thickness in microns (475-650), average of the two eyes. Table 6: >=600=0, 576 to <600=1, 551 to <576=2, 526 to <551=3, <=525=4. magent does not perform pachymetry."
},
"vertical_cd_ratio": {
"type": "number",
"description": "Mean vertical cup-disc ratio by contour (0-1), average of the two eyes. Table 6: <0.3=0, 0.3 to <0.4=1, 0.4 to <0.5=2, 0.5 to <0.6=3, >=0.6=4. magent does not grade the disc."
}
}
},
"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
- 2026-09-03 00:14Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 16:46Z
- 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. 7 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/ohts, 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.