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TextKit Describe Date
x402
TextKit Describe Date is a paid API for AI agents from textkit.johnaio281.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Returns structured calendar metadata for a given date: weekday name, ISO week number, quarter, and leap-year/validity information.
Price / call$0.005
Success—
StatusUnknown
How this service works
General-purpose text, Unicode and date utilities for AI agents: homoglyph folding and spoofed-domain detection, Unicode script detection, NFC/NFD normalization, grapheme counting, date description (weekday, ISO week, quarter, leap year), business-day counting, slugify, FNV-1a hashing, Shannon entropy, string format detection (uuid, email, url, ipv4, jwt, iban), byte-encoding detection and human-readable byte sizes. Pay per request in USDC on Base via x402 - no signup, no API key, no KYC.
Output
A JSON object containing the ISO-formatted date string, a boolean indicating whether the date is valid, the calendar quarter (1–4), the full weekday name (e.g. 'Wednesday'), and the ISO week-of-year number (e.g. 43).
Example use cases
Deadline weekday check
“My project deadline is March 15, 2025 — what day of the week is that, and which quarter does it land in?”
Event calendar labeling
“I need the full calendar breakdown for December 25, 2024 — weekday, ISO week number, and quarter — so I can label it correctly in our scheduling system.”
Quarterly reporting date lookup
“Can you tell me which quarter and ISO week number September 30, 2025 belongs to, and confirm it's a valid calendar date?”
Technical details
Endpoint
GEThttps://textkit.johnaio281.workers.dev/api/tk/describe-date?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, structured calendar metadata (weekday, ISO week, quarter) for a single date without standing up date-parsing infrastructure or managing API keys. It is ideal for AI agents that need to enrich date strings in pipelines, label events in scheduling workflows, or validate user-supplied dates, and where paying micro-amounts per call in USDC on Base is acceptable over a subscription.
Side effects
- Invalid date values (e.g. month=13 or day=32) may return valid:false or an error response
- Missing required query parameters (year, month, or day) will result in a 400-level error
- Non-integer or out-of-range values may cause validation failures
- Payment failure via x402 will block the request before it reaches the compute logic
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"iso": "2026-10-21",
"valid": true,
"quarter": 4,
"dayOfWeek": "Wednesday",
"weekOfYear": 43
}
}Tags
x402
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