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Vextorium Date Calculator
x402
Vextorium Date Calculator is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).
Computes date facts, exact differences between two dates, and date arithmetic (add/subtract days, months, years) with end-of-month safety.
Price / call$0.003
Success—
StatusUnknown
How this service works
Date facts (weekday, ISO week, quarter, day of year, leap year), exact difference between two dates in years, months, days, weeks and Mon-Fri working days, and adding or subtracting days, months or years (end-of-month safe).
Output
Returns a JSON object with three sections: 'fecha' (facts about the input date: weekday, ISO week, ISO year, quarter, day of year, days in month, leap year, weekend flag), 'resultado' (same facts for the computed result date after arithmetic), and 'diferencia' (exact difference between two dates in years, months, days, total days, weeks, and Mon–Fri working days).
Example use cases
Invoice due date calculation
“If I issue an invoice on 2025-08-01 with net-90 payment terms, what exact date is it due, and what day of the week does that land on?”
Working days between two milestones
“How many Mon–Fri working days are there between 2025-10-01 and 2025-12-31? I need the exact count for a project timeline.”
Leap year and quarter check
“Tell me all the calendar facts about 2024-02-29 — is it a leap year, what ISO week, what quarter, what day of the year, and is it a weekend?”
Technical details
Endpoint
POSThttps://api.vextorium.com/calcular-fechas-pago?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need precise calendar computations — especially working-day counts, end-of-month-safe date arithmetic, or detailed calendar metadata (ISO week, quarter, leap year) for a specific date. Prefer it over generic date libraries when you need a single API call to handle all these cases at once with no local computation.
Side effects
- Missing required 'fecha' field returns an error
- Invalid date format (not YYYY-MM-DD) causes parse failure
- Invalid date such as 2023-02-30 returns an error
- 'hasta' date earlier than 'fecha' may return negative difference values
- Non-integer values for sumar_dias/sumar_meses/sumar_anios cause schema validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| fecha | string | Date YYYY-MM-DD |
| hasta | string | Second date for the difference (optional) |
| sumar_dias | integer | |
| sumar_anios | integer | |
| sumar_meses | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"fecha": {
"fecha": "2024-02-29",
"anio_iso": 2024,
"bisiesto": true,
"trimestre": 1,
"dia_semana": "Thursday",
"semana_iso": 9,
"dia_del_anio": 60,
"dias_del_mes": 29,
"fin_de_semana": false
},
"resultado": {
"fecha": "2025-02-28",
"anio_iso": 2025,
"bisiesto": false,
"trimestre": 1,
"dia_semana": "Friday",
"semana_iso": 9,
"dia_del_anio": 59,
"dias_del_mes": 28,
"fin_de_semana": false
},
"diferencia": {
"dias": 4,
"anios": 2,
"hasta": "2026-10-02",
"meses": 7,
"semanas": 135.14,
"dias_totales": 946,
"laborables_lun_vie": 676
}
}
}Tags
x402
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