Pregnancy due date by Naegele's rule from last period or conception with cycle a
Pregnancy due date by Naegele's rule from last period or conception with cycle adjustment, gestational age today, trimester and key milestone dates
Answers HTTP 404 without x402 payment termsour last check, 2026-10-18
0 of 1checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://saylorinnovations.com/api/health/due-date
| Category | Everything else |
|---|---|
| Provider host | saylorinnovations.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-18 | no x402 terms | 404 | 220 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"lmp": "2026-06-01",
"today": "2026-10-17"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$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": {
"lmp": {
"description": "First day of last menstrual period YYYY-MM-DD",
"type": "string"
},
"today": {
"description": "optional reference date, default today",
"type": "string"
}
},
"required": [
"lmp"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"conception_estimate": {
"description": "Conception estimate",
"type": "string"
},
"cycle_adjustment_days": {
"description": "Cycle adjustment days",
"type": [
"number",
"null"
]
},
"days_until_due": {
"description": "Days until due",
"type": "number"
},
"estimated_due_date": {
"description": "Estimated due date",
"type": "string"
},
"gestational_age_today": {
"description": "Gestational age today",
"type": [
"object",
"null"
]
},
"milestones": {
"type": "array"
},
"note": {
"description": "Caveat or context for reading the result",
"type": "string"
},
"percent_complete": {
"description": "Percent complete",
"type": "number"
},
"source": {
"description": "Data source the values come from",
"type": "string"
},
"trimester_today": {
"description": "Trimester today",
"type": "number"
}
},
"required": [
"estimated_due_date",
"milestones"
],
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}