magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
SocialLiveeip155:8453Exactvia cdp
HestiaPeVteOutpatientCalculator
Calls · 30d
3→ 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.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-31 13:16Z
—
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/hestia",
"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/hestia",
"tags": [
"hestia",
"pe",
"vte",
"outpatient",
"calculator"
],
"mimeType": "application/json",
"description": "Hestia criteria (Zondag 2011). Outpatient PE is eligible only when none of 11 caller-assigned exclusions hold: hemodynamic instability, thrombolysis or embolectomy, high bleeding risk, oxygen >24 h, PE on anticoagulation, IV pain medication >24 h, medical or social admission, CrCl <30, severe liver impairment, pregnancy, or documented HIT. Any yes excludes home treatment. Not a diagnosis, not PESI, not sPESI.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"pregnant": false,
"oxygen_gt_24h": false,
"history_of_hit": false,
"high_bleeding_risk": false,
"iv_pain_meds_gt_24h": false,
"pe_on_anticoagulation": false,
"severe_liver_impairment": false,
"hemodynamically_unstable": false,
"creatinine_clearance_lt_30": false,
"medical_or_social_admission": false,
"thrombolysis_or_embolectomy": false
}
},
"output": {
"type": "json",
"example": {
"formula": "hestia",
"citation": {
"id": "zondag-2011",
"doi": "10.1111/j.1538-7836.2011.04388.x",
"title": "Outpatient treatment in patients with acute pulmonary embolism: the Hestia Study",
"source": "J Thromb Haemost. 2011;9(8):1500-1507",
"authors": "Zondag W, Mos ICM, Creemers-Schild D, et al."
},
"criteria": [
{
"met": false,
"factor": "hemodynamically_unstable"
},
{
"met": false,
"factor": "thrombolysis_or_embolectomy"
},
{
"met": false,
"factor": "high_bleeding_risk"
},
{
"met": false,
"factor": "oxygen_gt_24h"
},
{
"met": false,
"factor": "pe_on_anticoagulation"
},
{
"met": false,
"factor": "iv_pain_meds_gt_24h"
},
{
"met": false,
"factor": "medical_or_social_admission"
},
{
"met": false,
"factor": "creatinine_clearance_lt_30"
},
{
"met": false,
"factor": "severe_liver_impairment"
},
{
"met": false,
"factor": "pregnant"
},
{
"met": false,
"factor": "history_of_hit"
}
],
"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": "outpatient eligible iff none of the 11 exclusion criteria",
"outpatient_eligible": true
}
},
"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": [
"hemodynamically_unstable",
"thrombolysis_or_embolectomy",
"high_bleeding_risk",
"oxygen_gt_24h",
"pe_on_anticoagulation",
"iv_pain_meds_gt_24h",
"medical_or_social_admission",
"creatinine_clearance_lt_30",
"severe_liver_impairment",
"pregnant",
"history_of_hit"
],
"properties": {
"pregnant": {
"type": "boolean",
"description": "Pregnancy. true or false as assigned by the caller."
},
"oxygen_gt_24h": {
"type": "boolean",
"description": "More than 24 h of oxygen supply to keep SaO2 >90%, as assigned by the caller. true or false. magent does not compute oxygen duration or saturation."
},
"history_of_hit": {
"type": "boolean",
"description": "Documented history of heparin-induced thrombocytopenia (HIT). true or false as assigned by the caller. magent does not diagnose HIT."
},
"high_bleeding_risk": {
"type": "boolean",
"description": "Active bleeding or high risk of bleeding as assigned by the caller (paper: GI bleeding in the preceding 14 days, stroke <4 weeks, operation <2 weeks, bleeding disorder or platelets <75×10^9/L, or uncontrolled hypertension SBP >180 or DBP >110). true or false. magent does not compute bleeding risk."
},
"iv_pain_meds_gt_24h": {
"type": "boolean",
"description": "Severe pain needing intravenous pain medication for more than 24 h. true or false as assigned by the caller."
},
"pe_on_anticoagulation": {
"type": "boolean",
"description": "Pulmonary embolism diagnosed during anticoagulant treatment. true or false as assigned by the caller."
},
"severe_liver_impairment": {
"type": "boolean",
"description": "Severe liver impairment as judged by the caller (paper: physician judgement). true or false. magent does not grade liver impairment."
},
"hemodynamically_unstable": {
"type": "boolean",
"description": "Hemodynamic instability left to the clinician, including SBP <100 mmHg with heart rate >100 or ICU admission, as assigned by the caller. true or false. magent does not measure blood pressure or heart rate."
},
"creatinine_clearance_lt_30": {
"type": "boolean",
"description": "Creatinine clearance <30 mL/min by Cockcroft-Gault, as assigned by the caller. true or false. magent does not compute Cockcroft-Gault."
},
"medical_or_social_admission": {
"type": "boolean",
"description": "Medical or social reason for hospital treatment >24 h (paper: infection, malignancy, no support system). true or false as assigned by the caller."
},
"thrombolysis_or_embolectomy": {
"type": "boolean",
"description": "Thrombolysis or embolectomy necessary. true or false as assigned by the caller. magent does not decide reperfusion."
}
}
}
},
"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/hestia",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"pregnant": false,
"oxygen_gt_24h": false,
"history_of_hit": false,
"high_bleeding_risk": false,
"iv_pain_meds_gt_24h": false,
"pe_on_anticoagulation": false,
"severe_liver_impairment": false,
"hemodynamically_unstable": false,
"creatinine_clearance_lt_30": false,
"medical_or_social_admission": false,
"thrombolysis_or_embolectomy": false
},
{
"pregnant": false,
"oxygen_gt_24h": false,
"history_of_hit": false,
"high_bleeding_risk": false,
"iv_pain_meds_gt_24h": false,
"pe_on_anticoagulation": false,
"severe_liver_impairment": false,
"hemodynamically_unstable": false,
"creatinine_clearance_lt_30": false,
"medical_or_social_admission": false,
"thrombolysis_or_embolectomy": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/hestia",
"count": 2,
"items": [
{
"formula": "hestia",
"citation": {
"id": "zondag-2011",
"doi": "10.1111/j.1538-7836.2011.04388.x",
"title": "Outpatient treatment in patients with acute pulmonary embolism: the Hestia Study",
"source": "J Thromb Haemost. 2011;9(8):1500-1507",
"authors": "Zondag W, Mos ICM, Creemers-Schild D, et al."
},
"criteria": [
{
"met": false,
"factor": "hemodynamically_unstable"
},
{
"met": false,
"factor": "thrombolysis_or_embolectomy"
},
{
"met": false,
"factor": "high_bleeding_risk"
},
{
"met": false,
"factor": "oxygen_gt_24h"
},
{
"met": false,
"factor": "pe_on_anticoagulation"
},
{
"met": false,
"factor": "iv_pain_meds_gt_24h"
},
{
"met": false,
"factor": "medical_or_social_admission"
},
{
"met": false,
"factor": "creatinine_clearance_lt_30"
},
{
"met": false,
"factor": "severe_liver_impairment"
},
{
"met": false,
"factor": "pregnant"
},
{
"met": false,
"factor": "history_of_hit"
}
],
"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": "outpatient eligible iff none of the 11 exclusion criteria",
"outpatient_eligible": true
},
{
"formula": "hestia",
"citation": {
"id": "zondag-2011",
"doi": "10.1111/j.1538-7836.2011.04388.x",
"title": "Outpatient treatment in patients with acute pulmonary embolism: the Hestia Study",
"source": "J Thromb Haemost. 2011;9(8):1500-1507",
"authors": "Zondag W, Mos ICM, Creemers-Schild D, et al."
},
"criteria": [
{
"met": false,
"factor": "hemodynamically_unstable"
},
{
"met": false,
"factor": "thrombolysis_or_embolectomy"
},
{
"met": false,
"factor": "high_bleeding_risk"
},
{
"met": false,
"factor": "oxygen_gt_24h"
},
{
"met": false,
"factor": "pe_on_anticoagulation"
},
{
"met": false,
"factor": "iv_pain_meds_gt_24h"
},
{
"met": false,
"factor": "medical_or_social_admission"
},
{
"met": false,
"factor": "creatinine_clearance_lt_30"
},
{
"met": false,
"factor": "severe_liver_impairment"
},
{
"met": false,
"factor": "pregnant"
},
{
"met": false,
"factor": "history_of_hit"
}
],
"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": "outpatient eligible iff none of the 11 exclusion criteria",
"outpatient_eligible": true
}
]
}
},
"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": [
"hemodynamically_unstable",
"thrombolysis_or_embolectomy",
"high_bleeding_risk",
"oxygen_gt_24h",
"pe_on_anticoagulation",
"iv_pain_meds_gt_24h",
"medical_or_social_admission",
"creatinine_clearance_lt_30",
"severe_liver_impairment",
"pregnant",
"history_of_hit"
],
"properties": {
"pregnant": {
"type": "boolean",
"description": "Pregnancy. true or false as assigned by the caller."
},
"oxygen_gt_24h": {
"type": "boolean",
"description": "More than 24 h of oxygen supply to keep SaO2 >90%, as assigned by the caller. true or false. magent does not compute oxygen duration or saturation."
},
"history_of_hit": {
"type": "boolean",
"description": "Documented history of heparin-induced thrombocytopenia (HIT). true or false as assigned by the caller. magent does not diagnose HIT."
},
"high_bleeding_risk": {
"type": "boolean",
"description": "Active bleeding or high risk of bleeding as assigned by the caller (paper: GI bleeding in the preceding 14 days, stroke <4 weeks, operation <2 weeks, bleeding disorder or platelets <75×10^9/L, or uncontrolled hypertension SBP >180 or DBP >110). true or false. magent does not compute bleeding risk."
},
"iv_pain_meds_gt_24h": {
"type": "boolean",
"description": "Severe pain needing intravenous pain medication for more than 24 h. true or false as assigned by the caller."
},
"pe_on_anticoagulation": {
"type": "boolean",
"description": "Pulmonary embolism diagnosed during anticoagulant treatment. true or false as assigned by the caller."
},
"severe_liver_impairment": {
"type": "boolean",
"description": "Severe liver impairment as judged by the caller (paper: physician judgement). true or false. magent does not grade liver impairment."
},
"hemodynamically_unstable": {
"type": "boolean",
"description": "Hemodynamic instability left to the clinician, including SBP <100 mmHg with heart rate >100 or ICU admission, as assigned by the caller. true or false. magent does not measure blood pressure or heart rate."
},
"creatinine_clearance_lt_30": {
"type": "boolean",
"description": "Creatinine clearance <30 mL/min by Cockcroft-Gault, as assigned by the caller. true or false. magent does not compute Cockcroft-Gault."
},
"medical_or_social_admission": {
"type": "boolean",
"description": "Medical or social reason for hospital treatment >24 h (paper: infection, malignancy, no support system). true or false as assigned by the caller."
},
"thrombolysis_or_embolectomy": {
"type": "boolean",
"description": "Thrombolysis or embolectomy necessary. true or false as assigned by the caller. magent does not decide reperfusion."
}
}
},
"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 13:16Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 09:45Z
- 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. 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/hestia, 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.