SignalDesk AI – End-of-Month Date Calculator

x402

SignalDesk AI – End-of-Month Date Calculator is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Returns the last day of the month for a given Gregorian date in UTC

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

Output

A JSON object containing a single field 'date' with the last calendar day of the month for the input date, formatted as YYYY-MM-DD in UTC (e.g. {"date":"2024-02-29"} for a February 2024 input). Correctly handles leap years and variable month lengths.

Example use cases

Billing cycle deadline calculation

“Our invoices run to end of month — what's the last day of the month for June 10, 2025? I need to set the payment due date.”

Leap year February end date

“What's the last day of February 2024? I need to know whether it's the 28th or 29th since 2024 is a leap year.”

Payroll period end date

“Our payroll period starts on 2025-07-01 — what's the end-of-month date for that month so I can schedule the final payroll run?”

Technical details

Endpoint

POSThttps://x402-agent.kariguetoazul.workers.dev/api/date/end-of-month?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a reliable, deterministic UTC-aware end-of-month calculation for any Gregorian date, especially when leap year correctness matters. It is a lightweight paid microservice suitable for agentic billing, scheduling, or payroll workflows where a single-call date utility is preferable to implementing calendar logic inline.

Side effects

Invalid date format (not YYYY-MM-DD) returns an error
Date string out of valid calendar range may return error
Non-existent dates (e.g. 2023-02-30) may return validation error
Network or worker timeout if Cloudflare edge is unavailable
Payment failure if USDC balance is insufficient for the $0.001 fee

Input

Schema · Request body

Field	Type	Description
date	string	Gregorian date YYYY-MM-DD, interpreted in UTC.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "date": "2024-02-29"
  }
}

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