San Francisco Syncope Rule (CHESS) from history of CHF, hematocrit, abnormal ECG
San Francisco Syncope Rule (CHESS) from history of CHF, hematocrit, abnormal ECG, shortness of breath, and systolic BP. Returns a 0-5 criterion count and rule-positive if any CHESS item is present. Deterministic published score with citation; not a disposition protocol.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
270 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/sf_syncope
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 270 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"abnormal_ecg": false,
"chf": false,
"hematocrit_percent": 40,
"shortness_of_breath": false,
"systolic_bp_mm_hg": 120
},
{
"abnormal_ecg": false,
"chf": false,
"hematocrit_percent": 40,
"shortness_of_breath": false,
"systolic_bp_mm_hg": 120
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"abnormal_ecg": {
"description": "Abnormal ECG (E). true or false. Caller-assigned; magent does not read tracings.",
"type": "boolean"
},
"chf": {
"description": "History of congestive heart failure (C). true or false.",
"type": "boolean"
},
"hematocrit_percent": {
"description": "Hematocrit in percent (10-70). Scores 1 when <30; 30 is negative.",
"type": "number"
},
"shortness_of_breath": {
"description": "Shortness of breath (S). true or false.",
"type": "boolean"
},
"systolic_bp_mm_hg": {
"description": "Systolic BP in mm Hg (50-250). Scores 1 when <90; 90 is negative.",
"type": "number"
}
},
"required": [
"chf",
"hematocrit_percent",
"abnormal_ecg",
"shortness_of_breath",
"systolic_bp_mm_hg"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}