Body fat percentage from tape measurements using the US Navy method with ACE cat
Body fat percentage from tape measurements using the US Navy method with ACE category, healthy range and fat and lean mass when weight is supplied
Answers HTTP 404 without x402 payment termsour last check, 2026-10-18
0 of 1checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/health/body-fat
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | no x402 terms | 404 | 223 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"height_cm": "180",
"neck_cm": "38",
"sex": "male",
"waist_cm": "88",
"weight_kg": "82"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"properties": {
"height_cm": {
"description": "Height in cm",
"type": "string"
},
"neck_cm": {
"description": "Neck circumference in cm",
"type": "string"
},
"sex": {
"description": "male or female",
"type": "string"
},
"waist_cm": {
"description": "Waist circumference in cm",
"type": "string"
},
"weight_kg": {
"description": "optional, to compute fat and lean mass",
"type": "string"
}
},
"required": [
"sex",
"height_cm",
"neck_cm",
"waist_cm"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"body_fat_percent": {
"description": "Body fat, as a percentage",
"type": "number"
},
"category": {
"description": "Category",
"type": "string"
},
"fat_mass_kg": {
"description": "Fat mass, in kilograms",
"type": [
"number",
"null"
]
},
"healthy_range_percent": {
"description": "Healthy range, as a percentage",
"type": "string"
},
"inputs": {},
"lean_mass_kg": {
"description": "Lean mass, in kilograms",
"type": [
"number",
"null"
]
},
"method": {
"description": "Method used",
"type": "string"
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"sex": {
"type": "string"
},
"source": {
"description": "Data source the values come from",
"type": "string"
}
},
"required": [
"sex",
"body_fat_percent",
"category"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}