# Timezone Toolkit – Date Math

> Timezone Toolkit – Date Math is a paid API for AI agents from timezone-toolkit.agishub.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Performs date arithmetic (add/subtract durations, find relative dates) returning a resolved datetime with timezone applied

## Facts

- Endpoint: HEAD https://timezone-toolkit.agishub.com/paid/date-math
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/timezone-toolkit-date-math-417b3862
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5MNGYb9zqy_Hj9D9IktuV

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability timezone-toolkit-date-math-417b3862 -d '<json body>'
```

Example prompt: What date and time will it be in Europe/Madrid exactly 90 days from today at noon?

## When to prefer this

Choose this endpoint when you need to perform arithmetic on dates or datetimes — adding or subtracting days, weeks, months, or hours — and want the result expressed in a specific IANA timezone with a correct UTC offset. Prefer it over simple timezone conversion endpoints when the core task is shifting a date by a duration rather than just re-expressing an existing timestamp in another zone.

## Known failure modes

- Invalid or unrecognized IANA timezone identifier returns an error
- Malformed base datetime string causes parse failure
- Negative or zero duration with ambiguous direction may return unexpected result
- Missing required parameters (base date or offset) result in 4xx error
- Payment not attached or insufficient USDC balance returns 402 Payment Required

## How this service works

Timezone converter, world clock, date math & meeting scheduler for AI agents. Pay-per-call x402 endpoints (USDC on Base).

## Output

A JSON object containing a 'result' field with 'datetime' (ISO 8601 string with UTC offset applied, e.g. '2026-10-25T12:00:00+01:00') and 'timezone' (IANA timezone identifier, e.g. 'Europe/Madrid').

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "datetime": "2026-10-25T12:00:00+01:00",
   "timezone": "Europe/Madrid"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/timezone-toolkit-date-math-417b3862/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from timezone-toolkit.agishub.com](https://www.zero.xyz/host/timezone-toolkit.agishub.com/llms.txt)