Flamm 1997 admission VBAC score, max 10
Flamm 1997 admission VBAC score, max 10. Points: age under 40 (+2); vaginal birth none 0, before first cesarean 1, after first cesarean 2, before and after 4; first cesarean not for failure to progress (+1); admission effacement gt_75 +2, from_25_to_75 +1, lt_25 0; dilation >=4 cm (+1). Published success 49% for scores 0-2 and 95% for 8-10; other scores return the total only. Not a trial-of-labor order. magent does not examine the cervix.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
289 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/flamm_vbac
| 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 | $0.007 | 289 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age_lt_40": true,
"dilation_ge_4": false,
"effacement": "lt_25",
"non_ftp_indication": false,
"vaginal_birth": "none"
},
{
"age_lt_40": true,
"dilation_ge_4": false,
"effacement": "lt_25",
"non_ftp_indication": false,
"vaginal_birth": "none"
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age_lt_40": {
"description": "Maternal age under 40 years as assigned by the caller (Flamm 1997). true scores 2. true or false. magent does not date the patient.",
"type": "boolean"
},
"dilation_ge_4": {
"description": "Cervical dilation at or above 4 cm at admission as assigned by the caller (Flamm 1997). true scores 1. true or false. magent does not examine the cervix.",
"type": "boolean"
},
"effacement": {
"description": "Cervical effacement at admission as assigned by the caller (Flamm 1997). gt_75 scores 2; from_25_to_75 scores 1; lt_25 scores 0. magent does not examine the cervix.",
"enum": [
"gt_75",
"from_25_to_75",
"lt_25"
],
"type": "string"
},
"non_ftp_indication": {
"description": "First cesarean was for a reason other than failure to progress (Flamm 1997). true scores 1. true or false. magent does not read the operative indication.",
"type": "boolean"
},
"vaginal_birth": {
"description": "Prior vaginal birth history as assigned by the caller (Flamm 1997). Choose one: none scores 0; before_first_cesarean scores 1; after_first_cesarean scores 2; before_and_after scores 4. magent does not read the obstetric history.",
"enum": [
"none",
"before_first_cesarean",
"after_first_cesarean",
"before_and_after"
],
"type": "string"
}
},
"required": [
"age_lt_40",
"vaginal_birth",
"non_ftp_indication",
"effacement",
"dilation_ge_4"
],
"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"
}