Static respiratory-system compliance (Cstat) as in ARDS Network 2000 methods
Static respiratory-system compliance (Cstat) as in ARDS Network 2000 methods: Cstat (mL/cm H2O) = tidal_volume_ml / (pplat_cm_h2o - peep_cm_h2o). Caller supplies the three measured terms. Rejects Pplat less than or equal to PEEP. Does not invent ARDS severity bands from Cstat (Murray 1988 compliance bands are a different tool). Not a ventilator order or medical device. magent does not read the ventilator.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
265 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/cstat
| Category | Company and compliance |
|---|---|
| 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 | $0.007 | 265 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"peep_cm_h2o": 5,
"pplat_cm_h2o": 20,
"tidal_volume_ml": 500
},
{
"peep_cm_h2o": 5,
"pplat_cm_h2o": 20,
"tidal_volume_ml": 500
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"peep_cm_h2o": {
"description": "Positive end-expiratory pressure in cm H2O (0-40, magent clamp). Must be less than plateau pressure. magent does not read the ventilator.",
"type": "number"
},
"pplat_cm_h2o": {
"description": "End-inspiratory plateau pressure in cm H2O (5-80, magent clamp). Must be greater than PEEP. magent does not read the ventilator.",
"type": "number"
},
"tidal_volume_ml": {
"description": "Expired tidal volume in mL (50-2000, magent clamp). Caller supplies the measured term. magent does not read the ventilator.",
"type": "number"
}
},
"required": [
"tidal_volume_ml",
"pplat_cm_h2o",
"peep_cm_h2o"
],
"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"
}