magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Searchofflineeip155:8453Exactvia cdp
EpiphanyPeCancerVteCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 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 2026-09-01 13:19Z
—
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/epiphany",
"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/epiphany",
"tags": [
"epiphany",
"pe",
"cancer",
"vte",
"calculator"
],
"mimeType": "application/json",
"description": "Carmona-Bayonas 2017 EPIPHANY CHAID tree for cancer-associated PE. Hestia-like CDR any vs none, then ECOG-PS, SaO2, PE symptoms, tumour response, and primary resection as in Figure 2. Returns low, intermediate, or high with 15-day complication rates 1.6/9.4/30.6% and mortality 0.3/6.1/17.1%. Caller assigns the six covariates. Not a diagnosis or anticoagulation order. magent does not examine the patient.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"ecog_ps_ge_2": false,
"hestia_like_any": false,
"oxygen_sat_lt_90": false,
"tumour_uncontrolled": false,
"pe_specific_symptoms": false,
"primary_tumour_resected": true
}
},
"output": {
"type": "json",
"example": {
"leaf": "low_controlled",
"formula": "epiphany",
"citation": {
"id": "carmona-bayonas-2017",
"doi": "10.1038/bjc.2017.48",
"pmid": "28267709",
"title": "Predicting serious complications in patients with cancer and pulmonary embolism using decision tree modelling: the EPIPHANY Index",
"source": "Br J Cancer. 2017;116:994-1001",
"authors": "Carmona-Bayonas A, Jiménez-Fonseca P, Font C, Fenoy F, Otero R, Beato C, Plasencia JM, Biosca M, Sánchez M, Benegas M, Calvo-Temprano D, Varona D, Faez L, de la Haba I, Antonio M, Madridano O, Solis MP, Ramchandani A, Castañón E, Marchena PJ, Martín M, Ayala de la Peña F, Vicente V; Asociación de Investigación de la Enfermedad Tromboembólica de la Región de Murcia"
},
"criteria": [
{
"met": false,
"factor": "hestia_like_any"
},
{
"met": false,
"factor": "ecog_ps_ge_2"
},
{
"met": false,
"factor": "oxygen_sat_lt_90"
},
{
"met": false,
"factor": "pe_specific_symptoms"
},
{
"met": false,
"factor": "tumour_uncontrolled"
},
{
"met": true,
"factor": "primary_tumour_resected"
}
],
"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.",
"risk_class": "low",
"ecog_ps_ge_2": false,
"hestia_like_any": false,
"oxygen_sat_lt_90": false,
"formula_expression": "root: hestia-like CDR any vs none (Carmona-Bayonas 2017 Figure 2). CDR any: ECOG-PS >=2 then SaO2 <90 vs >=90 (both high), else PE-specific symptoms yes (high) vs no (intermediate). CDR none: tumour progression/unknown/not evaluated vs others (CR/PR/SD/NED); if uncontrolled then primary tumour resection yes (low) vs no (intermediate); if others then low. Classes low/intermediate/high with 15-day serious complications 1.6/9.4/30.6% and 15-day mortality 0.3/6.1/17.1%",
"tumour_uncontrolled": false,
"pe_specific_symptoms": false,
"mortality_15d_percent": 0.3,
"primary_tumour_resected": true,
"serious_complication_15d_percent": 1.6
}
},
"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": [
"hestia_like_any",
"ecog_ps_ge_2",
"oxygen_sat_lt_90",
"pe_specific_symptoms",
"tumour_uncontrolled",
"primary_tumour_resected"
],
"properties": {
"ecog_ps_ge_2": {
"type": "boolean",
"description": "ECOG-PS >=2 as assigned by the caller (Carmona-Bayonas 2017: <2 vs >=2). true or false. Used on the Hestia-like-any branch. magent does not assign performance status."
},
"hestia_like_any": {
"type": "boolean",
"description": "true if any Carmona-Bayonas 2017 Hestia-like clinical decision rule item is present: SBP <100 mm Hg, arterial oxygen saturation <90%, respiratory rate >=30 breaths/min, pulse >=110 beats/min, sudden or progressive dyspnoea, or clinically relevant haemorrhage / high bleeding risk / platelets <50 000 mm^-3 (Figure 2). false if none. Caller-assigned; magent does not measure vitals or score the 11-item Zondag Hestia checklist."
},
"oxygen_sat_lt_90": {
"type": "boolean",
"description": "Arterial oxygen saturation <90% as assigned by the caller (Figure 2: <90 vs >=90%). true or false. Used when Hestia-like any is present and ECOG-PS >=2; both sat leaves are high class. Distinct from the same cutoff inside the Hestia-like CDR. magent does not measure saturation."
},
"tumour_uncontrolled": {
"type": "boolean",
"description": "true if tumour response is progression, unknown, or not evaluated; false for others (complete or partial response, stable disease, or no evidence of disease) per Carmona-Bayonas 2017 Table 1 / Figure 2. Used on the Hestia-like-none branch. magent does not apply RECIST."
},
"pe_specific_symptoms": {
"type": "boolean",
"description": "PE-specific symptoms present as assigned by the caller (Carmona-Bayonas 2017 Figure 2). true or false. Used when Hestia-like any is present and ECOG-PS <2. Distinct from incidental vs symptomatic diagnosis and from the dyspnoea CDR item. magent does not take a history."
},
"primary_tumour_resected": {
"type": "boolean",
"description": "Prior surgical resection of the primary tumour as assigned by the caller. true or false. Used when Hestia-like none and tumour_uncontrolled are both true. magent does not read an operative note."
}
}
}
},
"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/epiphany",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"ecog_ps_ge_2": false,
"hestia_like_any": false,
"oxygen_sat_lt_90": false,
"tumour_uncontrolled": false,
"pe_specific_symptoms": false,
"primary_tumour_resected": true
},
{
"ecog_ps_ge_2": false,
"hestia_like_any": false,
"oxygen_sat_lt_90": false,
"tumour_uncontrolled": false,
"pe_specific_symptoms": false,
"primary_tumour_resected": true
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/epiphany",
"count": 2,
"items": [
{
"leaf": "low_controlled",
"formula": "epiphany",
"citation": {
"id": "carmona-bayonas-2017",
"doi": "10.1038/bjc.2017.48",
"pmid": "28267709",
"title": "Predicting serious complications in patients with cancer and pulmonary embolism using decision tree modelling: the EPIPHANY Index",
"source": "Br J Cancer. 2017;116:994-1001",
"authors": "Carmona-Bayonas A, Jiménez-Fonseca P, Font C, Fenoy F, Otero R, Beato C, Plasencia JM, Biosca M, Sánchez M, Benegas M, Calvo-Temprano D, Varona D, Faez L, de la Haba I, Antonio M, Madridano O, Solis MP, Ramchandani A, Castañón E, Marchena PJ, Martín M, Ayala de la Peña F, Vicente V; Asociación de Investigación de la Enfermedad Tromboembólica de la Región de Murcia"
},
"criteria": [
{
"met": false,
"factor": "hestia_like_any"
},
{
"met": false,
"factor": "ecog_ps_ge_2"
},
{
"met": false,
"factor": "oxygen_sat_lt_90"
},
{
"met": false,
"factor": "pe_specific_symptoms"
},
{
"met": false,
"factor": "tumour_uncontrolled"
},
{
"met": true,
"factor": "primary_tumour_resected"
}
],
"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.",
"risk_class": "low",
"ecog_ps_ge_2": false,
"hestia_like_any": false,
"oxygen_sat_lt_90": false,
"formula_expression": "root: hestia-like CDR any vs none (Carmona-Bayonas 2017 Figure 2). CDR any: ECOG-PS >=2 then SaO2 <90 vs >=90 (both high), else PE-specific symptoms yes (high) vs no (intermediate). CDR none: tumour progression/unknown/not evaluated vs others (CR/PR/SD/NED); if uncontrolled then primary tumour resection yes (low) vs no (intermediate); if others then low. Classes low/intermediate/high with 15-day serious complications 1.6/9.4/30.6% and 15-day mortality 0.3/6.1/17.1%",
"tumour_uncontrolled": false,
"pe_specific_symptoms": false,
"mortality_15d_percent": 0.3,
"primary_tumour_resected": true,
"serious_complication_15d_percent": 1.6
},
{
"leaf": "low_controlled",
"formula": "epiphany",
"citation": {
"id": "carmona-bayonas-2017",
"doi": "10.1038/bjc.2017.48",
"pmid": "28267709",
"title": "Predicting serious complications in patients with cancer and pulmonary embolism using decision tree modelling: the EPIPHANY Index",
"source": "Br J Cancer. 2017;116:994-1001",
"authors": "Carmona-Bayonas A, Jiménez-Fonseca P, Font C, Fenoy F, Otero R, Beato C, Plasencia JM, Biosca M, Sánchez M, Benegas M, Calvo-Temprano D, Varona D, Faez L, de la Haba I, Antonio M, Madridano O, Solis MP, Ramchandani A, Castañón E, Marchena PJ, Martín M, Ayala de la Peña F, Vicente V; Asociación de Investigación de la Enfermedad Tromboembólica de la Región de Murcia"
},
"criteria": [
{
"met": false,
"factor": "hestia_like_any"
},
{
"met": false,
"factor": "ecog_ps_ge_2"
},
{
"met": false,
"factor": "oxygen_sat_lt_90"
},
{
"met": false,
"factor": "pe_specific_symptoms"
},
{
"met": false,
"factor": "tumour_uncontrolled"
},
{
"met": true,
"factor": "primary_tumour_resected"
}
],
"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.",
"risk_class": "low",
"ecog_ps_ge_2": false,
"hestia_like_any": false,
"oxygen_sat_lt_90": false,
"formula_expression": "root: hestia-like CDR any vs none (Carmona-Bayonas 2017 Figure 2). CDR any: ECOG-PS >=2 then SaO2 <90 vs >=90 (both high), else PE-specific symptoms yes (high) vs no (intermediate). CDR none: tumour progression/unknown/not evaluated vs others (CR/PR/SD/NED); if uncontrolled then primary tumour resection yes (low) vs no (intermediate); if others then low. Classes low/intermediate/high with 15-day serious complications 1.6/9.4/30.6% and 15-day mortality 0.3/6.1/17.1%",
"tumour_uncontrolled": false,
"pe_specific_symptoms": false,
"mortality_15d_percent": 0.3,
"primary_tumour_resected": true,
"serious_complication_15d_percent": 1.6
}
]
}
},
"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": [
"hestia_like_any",
"ecog_ps_ge_2",
"oxygen_sat_lt_90",
"pe_specific_symptoms",
"tumour_uncontrolled",
"primary_tumour_resected"
],
"properties": {
"ecog_ps_ge_2": {
"type": "boolean",
"description": "ECOG-PS >=2 as assigned by the caller (Carmona-Bayonas 2017: <2 vs >=2). true or false. Used on the Hestia-like-any branch. magent does not assign performance status."
},
"hestia_like_any": {
"type": "boolean",
"description": "true if any Carmona-Bayonas 2017 Hestia-like clinical decision rule item is present: SBP <100 mm Hg, arterial oxygen saturation <90%, respiratory rate >=30 breaths/min, pulse >=110 beats/min, sudden or progressive dyspnoea, or clinically relevant haemorrhage / high bleeding risk / platelets <50 000 mm^-3 (Figure 2). false if none. Caller-assigned; magent does not measure vitals or score the 11-item Zondag Hestia checklist."
},
"oxygen_sat_lt_90": {
"type": "boolean",
"description": "Arterial oxygen saturation <90% as assigned by the caller (Figure 2: <90 vs >=90%). true or false. Used when Hestia-like any is present and ECOG-PS >=2; both sat leaves are high class. Distinct from the same cutoff inside the Hestia-like CDR. magent does not measure saturation."
},
"tumour_uncontrolled": {
"type": "boolean",
"description": "true if tumour response is progression, unknown, or not evaluated; false for others (complete or partial response, stable disease, or no evidence of disease) per Carmona-Bayonas 2017 Table 1 / Figure 2. Used on the Hestia-like-none branch. magent does not apply RECIST."
},
"pe_specific_symptoms": {
"type": "boolean",
"description": "PE-specific symptoms present as assigned by the caller (Carmona-Bayonas 2017 Figure 2). true or false. Used when Hestia-like any is present and ECOG-PS <2. Distinct from incidental vs symptomatic diagnosis and from the dyspnoea CDR item. magent does not take a history."
},
"primary_tumour_resected": {
"type": "boolean",
"description": "Prior surgical resection of the primary tumour as assigned by the caller. true or false. Used when Hestia-like none and tumour_uncontrolled are both true. magent does not read an operative note."
}
}
},
"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
- 2026-09-01 13:19Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 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. 8 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/epiphany, 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.