# Cron Next 5 Occurrences (8 UTC times) — agentshelf.syntexa.ch

> Cron Next 5 Occurrences (8 UTC times) — agentshelf.syntexa.ch is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-29).

Given a 5-field cron expression and an optional start datetime, returns the next 8 scheduled UTC execution times

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/cron-next-5-8?utm_source=zero.xyz
- Price: $0.005/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-occurrences-8-utc-times-agentshelf-syntexa-ch-113e5307
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JxMP8HCrQo8Fg5CTC1uEY

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-occurrences-8-utc-times-agentshelf-syntexa-ch-113e5307 -d '<json body>'
```

Example prompt: What are the next 8 UTC times that the cron expression '0 9 * * 1-5' will fire, starting from 2025-06-01T00:00:00Z?

## When to prefer this

Use this endpoint when an agent needs to enumerate the next 8 future fire times for a standard 5-field Unix cron expression, particularly in scheduling verification, capacity planning, or automation orchestration workflows. Prefer the free sandbox variant (/v1/sandbox/cron-next-5-8) for testing. Choose this paid endpoint for production or when sandbox is unavailable.

## Known failure modes

- Invalid cron expression (not a valid 5-field format) — likely returns a 400 error
- Malformed 'from' datetime that doesn't conform to ISO 8601 — parsing error
- Payment not included or rejected — 402 Payment Required (use sandbox endpoint for unpaid testing)
- Network or service unavailability — 5xx error

## How this service works

Call when an agent needs the next 8 UTC times for a 5-field cron expression. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/cron-next-5-8 first.

## Output

Returns an ordered list of the next 8 UTC datetime timestamps at which the provided 5-field cron expression would fire, beginning at or after 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-occurrences-8-utc-times-agentshelf-syntexa-ch-113e5307/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)