# Cron Next 5-Field 12 UTC Times Calculator

> Cron Next 5-Field 12 UTC Times Calculator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-29).

Computes the next 12 UTC occurrence times for a given 5-field cron expression starting from a specified datetime

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/cron-next-5-12?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cron-next-5-field-12-utc-times-calculator-9bcce492
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sM090yOESbAe9Vgs5qjjn

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 cron-next-5-field-12-utc-times-calculator-9bcce492 -d '<json body>'
```

Example prompt: What are the next 12 UTC times that the cron expression '0 8 * * 1-5' will fire, starting from 2025-06-01T00:00:00Z?

## When to prefer this

Use this endpoint when an agent needs to preview or validate an exact cron schedule by computing real UTC fire times, especially when automating scheduling decisions, verifying job cadences, or building calendar-aware workflows. Prefer the free sandbox endpoint /v1/sandbox/cron-next-5-12 for testing; use this paid endpoint for production use cases requiring reliability.

## Known failure modes

- Invalid cron expression (wrong number of fields, illegal characters) returns an error
- Malformed 'from' datetime (not ISO 8601 / date-time format) returns a validation error
- Cron expression with no valid future occurrences (e.g. impossible schedule) may return an error or empty result
- Payment failure or insufficient USDC balance results in 402 response

## How this service works

Call when an agent needs the next 12 UTC times for a 5-field cron expression. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/cron-next-5-12 first.

## Output

Returns a list of exactly 12 UTC datetime timestamps representing the next scheduled occurrences of the given 5-field cron expression, starting from the specified 'from' datetime.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "from": {
   "type": "string",
   "format": "date-time",
   "examples": [
    "2026-01-01T00:00:00.000Z"
   ],
   "description": "ISO datetime to count forward from. Omit it to start at the current time."
  },
  "expression": {
   "type": "string",
   "examples": [
    "0 * * * *"
   ],
   "maxLength": 200,
   "minLength": 1,
   "description": "Cron expression. The route says whether it is 5 fields or 6 fields. Example: 0 9 * * 1-5."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cron-next-5-field-12-utc-times-calculator-9bcce492/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)