magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Tradingofflineeip155:8453Exactvia cdp
LentPleuralRespiratoryPrognosisCalculator
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 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.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-31 12:56Z
—
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/lent",
"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/lent",
"tags": [
"lent",
"pleural",
"respiratory",
"prognosis",
"calculator"
],
"mimeType": "application/json",
"description": "Clive 2014 LENT score for malignant pleural effusion: pleural LDH IU/L (<1500 → 0, >1500 → 1), ECOG 0-4 (0→0, 1→1, 2→2, 3-4→3), serum NLR as a number (<9 → 0, >9 → 1), tumour type (mesothelioma/haematological 0; breast/gynaecological/renal_cell 1; lung/other 2). Score 0-7: 0-1 low, 2-4 moderate, 5-7 high. Equality at 1500 or 9 is not scored. Not a diagnosis or treatment order.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"nlr": 5,
"ecog": 0,
"tumor_type": "mesothelioma",
"pleural_ldh_u_l": 1000
}
},
"output": {
"type": "json",
"example": {
"nlr": 5,
"ecog": 0,
"risk": "low",
"score": 0,
"formula": "lent",
"citation": {
"id": "clive-2014",
"doi": "10.1136/thoraxjnl-2014-205285",
"pmid": "25100651",
"title": "Predicting survival in malignant pleural effusion: development and validation of the LENT prognostic score",
"source": "Thorax. 2014;69(12):1098-1104",
"authors": "Clive AO, Kahan BC, Hooper CE, Bhatnagar R, Morley AJ, Zahan-Evans N, Bintcliffe OJ, Boshuizen RC, Fysh ETH, Tobin CL, Medford ARL, Harvey JE, van den Heuvel MM, Lee YCG, Maskell NA"
},
"max_score": 7,
"components": [
{
"value": 1000,
"factor": "pleural_ldh",
"points": 0,
"present": false
},
{
"value": 0,
"factor": "ecog",
"points": 0,
"present": true
},
{
"value": 5,
"factor": "nlr",
"points": 0,
"present": false
},
{
"value": "mesothelioma",
"factor": "tumor_type",
"points": 0,
"present": false
}
],
"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.",
"tumor_type": "mesothelioma",
"pleural_ldh_u_l": 1000,
"formula_expression": "LENT = L (pleural LDH IU/L: <1500 → 0, >1500 → 1) + E (ECOG 0→0, 1→1, 2→2, 3-4→3) + N (serum NLR: <9 → 0, >9 → 1) + T (mesothelioma/haematological → 0; breast/gynaecological/renal_cell → 1; lung/other → 2); Clive 2014 Table 3; max 7; 0-1 low, 2-4 moderate, 5-7 high"
}
},
"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": [
"pleural_ldh_u_l",
"ecog",
"nlr",
"tumor_type"
],
"properties": {
"nlr": {
"type": "number",
"description": "Serum neutrophil-to-lymphocyte ratio as a number (0.05-200, not 9). Clive 2014 Table 3: <9 scores 0, >9 scores 1. Equality at 9 is not scored. Pass nlr; magent does not compute it from percents."
},
"ecog": {
"type": "integer",
"description": "Oken 1982 ECOG performance status 0-4 as assigned by the caller. Clive 2014: 0→0, 1→1, 2→2, 3-4→3. Grade 5 (dead) is not scored. magent does not observe the patient."
},
"tumor_type": {
"enum": [
"mesothelioma",
"haematological",
"breast",
"gynaecological",
"renal_cell",
"lung",
"other"
],
"type": "string",
"description": "Clive 2014 tumour type. mesothelioma or haematological (also hematological) scores 0; breast, gynaecological (also gynecological), or renal_cell scores 1; lung or other scores 2. magent does not assign tumour type from histology text."
},
"pleural_ldh_u_l": {
"type": "number",
"description": "Pleural fluid LDH in IU/L (1-20000, not 1500). Clive 2014 Table 3: <1500 scores 0, >1500 scores 1. Equality at 1500 is not scored."
}
}
}
},
"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/lent",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"nlr": 5,
"ecog": 0,
"tumor_type": "mesothelioma",
"pleural_ldh_u_l": 1000
},
{
"nlr": 5,
"ecog": 0,
"tumor_type": "mesothelioma",
"pleural_ldh_u_l": 1000
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/lent",
"count": 2,
"items": [
{
"nlr": 5,
"ecog": 0,
"risk": "low",
"score": 0,
"formula": "lent",
"citation": {
"id": "clive-2014",
"doi": "10.1136/thoraxjnl-2014-205285",
"pmid": "25100651",
"title": "Predicting survival in malignant pleural effusion: development and validation of the LENT prognostic score",
"source": "Thorax. 2014;69(12):1098-1104",
"authors": "Clive AO, Kahan BC, Hooper CE, Bhatnagar R, Morley AJ, Zahan-Evans N, Bintcliffe OJ, Boshuizen RC, Fysh ETH, Tobin CL, Medford ARL, Harvey JE, van den Heuvel MM, Lee YCG, Maskell NA"
},
"max_score": 7,
"components": [
{
"value": 1000,
"factor": "pleural_ldh",
"points": 0,
"present": false
},
{
"value": 0,
"factor": "ecog",
"points": 0,
"present": true
},
{
"value": 5,
"factor": "nlr",
"points": 0,
"present": false
},
{
"value": "mesothelioma",
"factor": "tumor_type",
"points": 0,
"present": false
}
],
"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.",
"tumor_type": "mesothelioma",
"pleural_ldh_u_l": 1000,
"formula_expression": "LENT = L (pleural LDH IU/L: <1500 → 0, >1500 → 1) + E (ECOG 0→0, 1→1, 2→2, 3-4→3) + N (serum NLR: <9 → 0, >9 → 1) + T (mesothelioma/haematological → 0; breast/gynaecological/renal_cell → 1; lung/other → 2); Clive 2014 Table 3; max 7; 0-1 low, 2-4 moderate, 5-7 high"
},
{
"nlr": 5,
"ecog": 0,
"risk": "low",
"score": 0,
"formula": "lent",
"citation": {
"id": "clive-2014",
"doi": "10.1136/thoraxjnl-2014-205285",
"pmid": "25100651",
"title": "Predicting survival in malignant pleural effusion: development and validation of the LENT prognostic score",
"source": "Thorax. 2014;69(12):1098-1104",
"authors": "Clive AO, Kahan BC, Hooper CE, Bhatnagar R, Morley AJ, Zahan-Evans N, Bintcliffe OJ, Boshuizen RC, Fysh ETH, Tobin CL, Medford ARL, Harvey JE, van den Heuvel MM, Lee YCG, Maskell NA"
},
"max_score": 7,
"components": [
{
"value": 1000,
"factor": "pleural_ldh",
"points": 0,
"present": false
},
{
"value": 0,
"factor": "ecog",
"points": 0,
"present": true
},
{
"value": 5,
"factor": "nlr",
"points": 0,
"present": false
},
{
"value": "mesothelioma",
"factor": "tumor_type",
"points": 0,
"present": false
}
],
"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.",
"tumor_type": "mesothelioma",
"pleural_ldh_u_l": 1000,
"formula_expression": "LENT = L (pleural LDH IU/L: <1500 → 0, >1500 → 1) + E (ECOG 0→0, 1→1, 2→2, 3-4→3) + N (serum NLR: <9 → 0, >9 → 1) + T (mesothelioma/haematological → 0; breast/gynaecological/renal_cell → 1; lung/other → 2); Clive 2014 Table 3; max 7; 0-1 low, 2-4 moderate, 5-7 high"
}
]
}
},
"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": [
"pleural_ldh_u_l",
"ecog",
"nlr",
"tumor_type"
],
"properties": {
"nlr": {
"type": "number",
"description": "Serum neutrophil-to-lymphocyte ratio as a number (0.05-200, not 9). Clive 2014 Table 3: <9 scores 0, >9 scores 1. Equality at 9 is not scored. Pass nlr; magent does not compute it from percents."
},
"ecog": {
"type": "integer",
"description": "Oken 1982 ECOG performance status 0-4 as assigned by the caller. Clive 2014: 0→0, 1→1, 2→2, 3-4→3. Grade 5 (dead) is not scored. magent does not observe the patient."
},
"tumor_type": {
"enum": [
"mesothelioma",
"haematological",
"breast",
"gynaecological",
"renal_cell",
"lung",
"other"
],
"type": "string",
"description": "Clive 2014 tumour type. mesothelioma or haematological (also hematological) scores 0; breast, gynaecological (also gynecological), or renal_cell scores 1; lung or other scores 2. magent does not assign tumour type from histology text."
},
"pleural_ldh_u_l": {
"type": "number",
"description": "Pleural fluid LDH in IU/L (1-20000, not 1500). Clive 2014 Table 3: <1500 scores 0, >1500 scores 1. Equality at 1500 is not scored."
}
}
},
"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 12:56Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-11 04:15Z
- 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. 14 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/lent, 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.