# Cron Next 6-24 — Next 24 UTC Fire Times for 6-Field Cron Expression

> Cron Next 6-24 — Next 24 UTC Fire Times for 6-Field Cron Expression is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Computes the next 24 scheduled UTC fire times for a given 6-field cron expression, starting from a specified datetime.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/cron-next-6-24?utm_source=zero.xyz
- Price: $0.003/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-6-24-next-24-utc-fire-times-for-6-field-cron-expression-a5f8b4e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u30KkSnVPSuSxztZXjLbg

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-6-24-next-24-utc-fire-times-for-6-field-cron-expression-a5f8b4e4 -d '<json body>'
```

Example prompt: What are the next 24 UTC times my cron job will fire? The expression is '0 */6 * * * *' and I want times starting from 2024-06-01T00:00:00Z.

## When to prefer this

Use this endpoint when you need to deterministically enumerate upcoming execution times for a 6-field cron expression (seconds-level precision), especially when building scheduler UIs, validating cron configs, or planning around automated job timing. Prefer the free sandbox endpoint (/v1/sandbox/cron-next-6-24) for testing; use this paid endpoint for production workloads requiring reliability.

## Known failure modes

- Invalid cron expression format returns an error indicating unparseable expression
- Missing required 'expression' field results in a validation error
- Malformed 'from' date-time string returns a parse/format error
- Expressions with no future occurrences (e.g. past-only patterns) may return an empty list or error
- Network or payment failure (x402) prevents the call from completing

## How this service works

Call when an agent needs the next 24 UTC times for a 6-field cron expression. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/cron-next-6-24 first.

## Output

Returns a list of the next 24 UTC datetime timestamps at which the provided 6-field cron expression would fire, calculated starting from the given 'from' datetime. Useful for validating, debugging, or planning around scheduled jobs.

## 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-6-24-next-24-utc-fire-times-for-6-field-cron-expression-a5f8b4e4/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)