# Cron Next 6-12 UTC Times

> Cron Next 6-12 UTC Times is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Given a 6-field cron expression and an optional start datetime, returns the next 12 UTC scheduled times that match the expression.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/cron-next-6-12?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cron-next-6-12-utc-times-4e794993
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rUSBHkvOncfqsoeyln9KD

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-6-12-utc-times-4e794993 -d '<json body>'
```

Example prompt: What are the next 12 UTC times that the cron expression '0 9 * * 1-5 *' will fire, starting from 2024-06-01T00:00:00Z?

## When to prefer this

Use this endpoint when an agent needs to resolve a 6-field cron expression into concrete UTC datetimes — for example, to validate a schedule, display upcoming job times to a user, or plan around execution windows. Prefer the free sandbox endpoint (/v1/sandbox/cron-next-6-12) for testing. Choose this paid endpoint for production use when reliability and correctness are required and the $0.002 USDC cost is acceptable.

## Known failure modes

- Invalid cron expression format returns a 400 error
- Malformed or out-of-range 'from' datetime returns a validation error
- Payment of $0.002 USDC not provided or rejected returns 402 Payment Required
- Cron expression with no future occurrences (e.g. past-only range) may return empty or error
- Expression with fewer than 6 fields rejected as invalid

## How this service works

Call when an agent needs the next 12 UTC times for a 6-field cron expression. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/cron-next-6-12 first.

## Output

An ordered list of the next 12 UTC datetimes at which the given 6-field cron expression will fire, starting from the specified 'from' datetime (or now if omitted). Results are ISO 8601 UTC timestamps suitable for scheduling, display, or validation.

## 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 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-6-12-utc-times-4e794993/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)