# x402-toolbox Cron Expression Explainer

> x402-toolbox Cron Expression Explainer is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Accepts a cron expression schema string and returns a human-readable explanation of what schedule it represents

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/util/cron-explain?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/x402-toolbox-cron-expression-explainer-918084a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_O00EaYRk6Q4k6gdA-ndEL

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 x402-toolbox-cron-expression-explainer-918084a8
```

Example prompt: Can you explain what this cron expression means: '0 9 * * 1-5'? I want to know when exactly it will trigger.

## When to prefer this

Choose this endpoint when you need a quick, cheap ($0.001 USDC), no-signup way to convert a cron string to a plain-English schedule description — especially in an agentic pipeline where you don't want to maintain API keys or accounts. Prefer this over building your own parser when you need deterministic, human-readable output for logging, documentation, or user-facing explanations.

## Known failure modes

- Invalid or malformed cron expression returns an error or unhelpful explanation
- Missing schema parameter may result in a 400 or empty response
- Ambiguous 5 vs 6 field cron formats may be misinterpreted
- Payment failure via x402 returns 402 with no explanation

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

A JSON response with ok and paid status flags, plus a human-readable explanation describing when the cron schedule triggers — e.g. 'Every Monday through Friday at 9:00 AM UTC'.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-cron-expression-explainer-918084a8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)