magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Searchofflineeip155:8453Exactvia cdp
EgriAirwayIntubationPreoperativeCalculator
Serves fromAspen, Colorado · United States66.241.125.93
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 13 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 13:24Z
—
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/egri",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
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{
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"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
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],
"resource": {
"url": "https://api.magentlab.com/api/calc/egri",
"tags": [
"egri",
"airway",
"intubation",
"preoperative",
"calculator"
],
"mimeType": "application/json",
"description": "El-Ganzouri 1996 simplified airway risk index (0/1/2): mouth opening >4 cm=0, <=4=1; thyromental >6.5 cm=0, 6.0-6.5=1, <6.0=2; original Mallampati 1/2/3 = 0/1/2 (class 4 not used); neck >90 deg=0, 80-90=1, <80=2; can prognath true=0, false=1; weight <90 kg=0, 90-110=1, >110=2; intubation history none/questionable/definite = 0/1/2. Max 12. High risk if score >=4. Not an intubation order; magent does not examine the airway.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
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"method": "GET",
"queryParams": {
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"weight_lb": 154,
"mallampati": 1,
"can_prognath": true,
"thyromental_cm": 7,
"mouth_opening_cm": 5,
"neck_movement_deg": 100,
"history_difficult_intubation": "none"
}
},
"output": {
"type": "json",
"example": {
"score": 0,
"formula": "egri",
"citation": {
"id": "el-ganzouri-1996",
"doi": "10.1097/00000539-199606000-00017",
"pmid": "8638791",
"title": "Preoperative airway assessment: predictive value of a multivariate risk index",
"source": "Anesth Analg. 1996;82(6):1197-1204",
"authors": "el-Ganzouri AR, McCarthy RJ, Tuman KJ, Tanck EN, Ivankovich AD"
},
"egri_band": "lt_4",
"high_risk": false,
"max_score": 12,
"weight_kg": 70,
"components": [
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"factor": "mouth_opening_cm",
"points": 0,
"present": false
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{
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"factor": "thyromental_cm",
"points": 0,
"present": false
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{
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"factor": "mallampati",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "neck_movement_deg",
"points": 0,
"present": false
},
{
"value": true,
"factor": "can_prognath",
"points": 0,
"present": false
},
{
"value": 70,
"factor": "weight",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "history_difficult_intubation",
"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.",
"mallampati": 1,
"can_prognath": true,
"thyromental_cm": 7,
"mouth_opening_cm": 5,
"neck_movement_deg": 100,
"formula_expression": "EGRI = mouth_opening (>4 cm: 0, <=4 cm: 1) + thyromental (>6.5 cm: 0, 6.0-6.5: 1, <6.0: 2) + mallampati (1: 0, 2: 1, 3: 2) + neck_movement (>90 deg: 0, 80-90: 1, <80: 2) + can_prognath (true: 0, false: 1) + weight (<90 kg: 0, 90-110: 1, >110: 2) + history_difficult_intubation (none: 0, questionable: 1, definite: 2); max 12; high_risk if score >= 4",
"history_difficult_intubation": "none"
}
},
"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": [
"mouth_opening_cm",
"thyromental_cm",
"mallampati",
"neck_movement_deg",
"can_prognath",
"history_difficult_intubation"
],
"properties": {
"weight_kg": {
"type": "number",
"description": "Body weight in kilograms (1-500). Provide weight_kg or weight_lb. El-Ganzouri 1996: <90 kg scores 0; 90-110 inclusive scores 1; >110 kg scores 2. Exactly 90 and 110 score 1."
},
"weight_lb": {
"type": "number",
"description": "Body weight in pounds (2-1100). Converted as kg = lb × 0.45359237, then the El-Ganzouri 1996 kg bands apply. Provide weight_kg or weight_lb."
},
"mallampati": {
"type": "integer",
"description": "Original Mallampati class 1, 2, or 3 as assigned by the caller (El-Ganzouri 1996). 1 scores 0; 2 scores 1; 3 scores 2. Samsoon class 4 is not used and is rejected."
},
"can_prognath": {
"type": "boolean",
"description": "Ability to prognath (jaw protrusion) as assigned by the caller (El-Ganzouri 1996). true scores 0; false scores 1. true or false."
},
"thyromental_cm": {
"type": "number",
"description": "Thyromental distance in centimetres (2-15) as assigned by the caller. El-Ganzouri 1996: >6.5 cm scores 0; 6.0-6.5 inclusive scores 1; <6.0 cm scores 2. Exactly 6.5 scores 1."
},
"mouth_opening_cm": {
"type": "number",
"description": "Interincisor gap in centimetres (0.5-10) as assigned by the caller. El-Ganzouri 1996: >4 cm scores 0; <=4 cm scores 1. Exactly 4.0 scores 1. magent does not measure mouth opening."
},
"neck_movement_deg": {
"type": "number",
"description": "Head and neck range of motion in degrees (0-180) as assigned by the caller. El-Ganzouri 1996: >90 scores 0; 80-90 inclusive scores 1; <80 scores 2. Exactly 90 scores 1. magent does not measure neck motion."
},
"history_difficult_intubation": {
"enum": [
"none",
"questionable",
"definite"
],
"type": "string",
"description": "History of difficult intubation as assigned by the caller (El-Ganzouri 1996): none scores 0, questionable scores 1, definite scores 2."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
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],
"properties": {
"type": {
"type": "string"
},
"example": {
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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.
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
[
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"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/egri",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"weight_kg": 70,
"weight_lb": 154,
"mallampati": 1,
"can_prognath": true,
"thyromental_cm": 7,
"mouth_opening_cm": 5,
"neck_movement_deg": 100,
"history_difficult_intubation": "none"
},
{
"weight_kg": 70,
"weight_lb": 154,
"mallampati": 1,
"can_prognath": true,
"thyromental_cm": 7,
"mouth_opening_cm": 5,
"neck_movement_deg": 100,
"history_difficult_intubation": "none"
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/egri",
"count": 2,
"items": [
{
"score": 0,
"formula": "egri",
"citation": {
"id": "el-ganzouri-1996",
"doi": "10.1097/00000539-199606000-00017",
"pmid": "8638791",
"title": "Preoperative airway assessment: predictive value of a multivariate risk index",
"source": "Anesth Analg. 1996;82(6):1197-1204",
"authors": "el-Ganzouri AR, McCarthy RJ, Tuman KJ, Tanck EN, Ivankovich AD"
},
"egri_band": "lt_4",
"high_risk": false,
"max_score": 12,
"weight_kg": 70,
"components": [
{
"value": 5,
"factor": "mouth_opening_cm",
"points": 0,
"present": false
},
{
"value": 7,
"factor": "thyromental_cm",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "mallampati",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "neck_movement_deg",
"points": 0,
"present": false
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{
"value": true,
"factor": "can_prognath",
"points": 0,
"present": false
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{
"value": 70,
"factor": "weight",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "history_difficult_intubation",
"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.",
"mallampati": 1,
"can_prognath": true,
"thyromental_cm": 7,
"mouth_opening_cm": 5,
"neck_movement_deg": 100,
"formula_expression": "EGRI = mouth_opening (>4 cm: 0, <=4 cm: 1) + thyromental (>6.5 cm: 0, 6.0-6.5: 1, <6.0: 2) + mallampati (1: 0, 2: 1, 3: 2) + neck_movement (>90 deg: 0, 80-90: 1, <80: 2) + can_prognath (true: 0, false: 1) + weight (<90 kg: 0, 90-110: 1, >110: 2) + history_difficult_intubation (none: 0, questionable: 1, definite: 2); max 12; high_risk if score >= 4",
"history_difficult_intubation": "none"
},
{
"score": 0,
"formula": "egri",
"citation": {
"id": "el-ganzouri-1996",
"doi": "10.1097/00000539-199606000-00017",
"pmid": "8638791",
"title": "Preoperative airway assessment: predictive value of a multivariate risk index",
"source": "Anesth Analg. 1996;82(6):1197-1204",
"authors": "el-Ganzouri AR, McCarthy RJ, Tuman KJ, Tanck EN, Ivankovich AD"
},
"egri_band": "lt_4",
"high_risk": false,
"max_score": 12,
"weight_kg": 70,
"components": [
{
"value": 5,
"factor": "mouth_opening_cm",
"points": 0,
"present": false
},
{
"value": 7,
"factor": "thyromental_cm",
"points": 0,
"present": false
},
{
"value": 1,
"factor": "mallampati",
"points": 0,
"present": false
},
{
"value": 100,
"factor": "neck_movement_deg",
"points": 0,
"present": false
},
{
"value": true,
"factor": "can_prognath",
"points": 0,
"present": false
},
{
"value": 70,
"factor": "weight",
"points": 0,
"present": false
},
{
"value": "none",
"factor": "history_difficult_intubation",
"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.",
"mallampati": 1,
"can_prognath": true,
"thyromental_cm": 7,
"mouth_opening_cm": 5,
"neck_movement_deg": 100,
"formula_expression": "EGRI = mouth_opening (>4 cm: 0, <=4 cm: 1) + thyromental (>6.5 cm: 0, 6.0-6.5: 1, <6.0: 2) + mallampati (1: 0, 2: 1, 3: 2) + neck_movement (>90 deg: 0, 80-90: 1, <80: 2) + can_prognath (true: 0, false: 1) + weight (<90 kg: 0, 90-110: 1, >110: 2) + history_difficult_intubation (none: 0, questionable: 1, definite: 2); max 12; high_risk if score >= 4",
"history_difficult_intubation": "none"
}
]
}
},
"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": [
"mouth_opening_cm",
"thyromental_cm",
"mallampati",
"neck_movement_deg",
"can_prognath",
"history_difficult_intubation"
],
"properties": {
"weight_kg": {
"type": "number",
"description": "Body weight in kilograms (1-500). Provide weight_kg or weight_lb. El-Ganzouri 1996: <90 kg scores 0; 90-110 inclusive scores 1; >110 kg scores 2. Exactly 90 and 110 score 1."
},
"weight_lb": {
"type": "number",
"description": "Body weight in pounds (2-1100). Converted as kg = lb × 0.45359237, then the El-Ganzouri 1996 kg bands apply. Provide weight_kg or weight_lb."
},
"mallampati": {
"type": "integer",
"description": "Original Mallampati class 1, 2, or 3 as assigned by the caller (El-Ganzouri 1996). 1 scores 0; 2 scores 1; 3 scores 2. Samsoon class 4 is not used and is rejected."
},
"can_prognath": {
"type": "boolean",
"description": "Ability to prognath (jaw protrusion) as assigned by the caller (El-Ganzouri 1996). true scores 0; false scores 1. true or false."
},
"thyromental_cm": {
"type": "number",
"description": "Thyromental distance in centimetres (2-15) as assigned by the caller. El-Ganzouri 1996: >6.5 cm scores 0; 6.0-6.5 inclusive scores 1; <6.0 cm scores 2. Exactly 6.5 scores 1."
},
"mouth_opening_cm": {
"type": "number",
"description": "Interincisor gap in centimetres (0.5-10) as assigned by the caller. El-Ganzouri 1996: >4 cm scores 0; <=4 cm scores 1. Exactly 4.0 scores 1. magent does not measure mouth opening."
},
"neck_movement_deg": {
"type": "number",
"description": "Head and neck range of motion in degrees (0-180) as assigned by the caller. El-Ganzouri 1996: >90 scores 0; 80-90 inclusive scores 1; <80 scores 2. Exactly 90 scores 1. magent does not measure neck motion."
},
"history_difficult_intubation": {
"enum": [
"none",
"questionable",
"definite"
],
"type": "string",
"description": "History of difficult intubation as assigned by the caller (El-Ganzouri 1996): none scores 0, questionable scores 1, definite scores 2."
}
}
},
"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 13:24Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 22:45Z
- 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. 13 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/egri, 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.