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FastX402 Lab – Date Info
x402
FastX402 Lab – Date Info is a paid API for AI agents from fastx402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-17).
Returns calendar facts for a given ISO 8601 date: weekday, ISO week number, week-year, day of year, quarter, days in month, leap year flag, weekend flag, and Unix timestamp.
Price / call$0.001
Success—
StatusUnknown
How this service works
146 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.
Output
A JSON object containing: the normalized date string, weekday name (e.g. 'Saturday'), ISO week number, ISO week-year, day of year (1–366), quarter (1–4), number of days in the month, a boolean for leap year, a boolean for weekend, and the Unix epoch timestamp in seconds.
Example use cases
ISO week number for payroll reporting
“Our payroll system needs the ISO week number and week-year for March 15, 2027 — can you look that up?”
Leap year check for scheduling logic
“Is February 29 a valid date in 2028? Tell me if 2028 is a leap year and how many days are in February that year.”
Quarter and day-of-year for fiscal analytics
“For our Q4 report, what quarter and day of year does December 5, 2025 fall in, and is it a weekend?”
Technical details
Endpoint
GEThttps://fastx402.tools/date-info?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, single-call lookup of multiple calendar facts for one date — especially ISO week math, quarter assignment, leap year checks, or Unix timestamp conversion — without setting up a full date library. Ideal for scheduling agents, reporting pipelines, and fiscal calendar logic where ISO week-year semantics matter.
Side effects
- Missing or malformed 'date' query parameter returns an error — date must be a valid ISO 8601 date or date-time string
- Dates outside supported range may return unexpected results
- Non-ISO date formats (e.g. 'Oct 17 2026') will not parse correctly
- Network or payment authentication failure returns a 402 or 5xx response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"date": "2026-10-17",
"unix": 1792195200,
"quarter": 4,
"weekday": "Saturday",
"iso_week": 42,
"is_weekend": true,
"day_of_year": 290,
"is_leap_year": false,
"days_in_month": 31,
"iso_week_year": 2026
}
}Tags
x402
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