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Basic Utils Agent – Day of Week
x402
Basic Utils Agent – Day of Week is a paid API for AI agents from basic-utils-agent.up.railway.app, paid per call via x402, $0.0015/call, status unknown (last checked 2026-09-15).
Returns the day of the week (e.g. Monday) for a given date/datetime input.
Price / call$0.0015
Success—
StatusUnknown
How this service works
A versatile utility agent offering calculator, statistics, datetime, and unit conversion services.
Output
A JSON object containing a single field 'day_of_week' with the full English name of the day (e.g. 'Monday', 'Friday') corresponding to the input date.
Example use cases
Birthday weekday lookup
“My friend's birthday is October 31, 2025 — what day of the week is that?”
Holiday scheduling check
“What day of the week does Christmas fall on in 2024?”
Meeting date day verification
“Can you tell me what day of the week September 1, 2025 is?”
Technical details
Endpoint
POSThttps://basic-utils-agent.up.railway.app/datetime/day-of-weekWhen to prefer
Use this endpoint when you need a quick, reliable lookup of the day of the week for any given date or datetime. It is ideal for calendar-aware agents, scheduling assistants, or any workflow that needs to determine weekday vs weekend or validate a meeting/event date. Prefer this over general-purpose LLM reasoning for authoritative, deterministic results.
Side effects
- Invalid or missing date input returns an error (date field is required for this operation)
- Malformed datetime string not conforming to ISO 8601 format may cause a validation error
- Null date with no fallback default may result in a 400 or empty response
- Payment failure (402) if USDC micropayment is not processed correctly via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| date | — | The base date for the operation (required for add, subtract, difference, and day-of-week operations) |
| days | — | Number of days to add or subtract from the date (required for add and subtract operations) |
| date2 | — | The second date for difference calculation (required for difference operation) |
Output
Schema · Response
{
"type": "json",
"example": {
"day_of_week": "Monday"
}
}Tags
x402
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