# FastX402 Cron Describe

> FastX402 Cron Describe is a paid API for AI agents from fastx402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-27).

Translates a cron expression into a human-readable description in multiple languages

## Facts

- Endpoint: GET https://fastx402.tools/cron-describe?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fastx402-cron-describe-7e24fc48
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mRSw-2sUESicbcJW7CxCe

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 fastx402-cron-describe-7e24fc48
```

Example prompt: What does the cron expression '0 9 * * 1-5' mean in plain English using 24-hour time?

## When to prefer this

Use this endpoint when you need to programmatically convert a cron expression to a human-readable string without setting up infrastructure or managing API keys. It is ideal for agents building documentation, explaining scheduled job configurations to non-technical users, or validating that a cron string matches an intended schedule — especially when multilingual output is needed.

## Known failure modes

- Invalid or malformed cron expression returns an error or empty description
- Unsupported locale value outside the allowed enum results in rejection
- Missing required 'expression' query parameter causes request failure
- Payment not completed via x402 results in 402 Payment Required response

## How this service works

200 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.

## Output

A JSON object containing the original cron expression and a plain-language description of when it fires, such as 'At 09:00, Monday through Friday'. Supports locale output in English, Turkish, German, French, or Spanish, and optional 12/24-hour clock format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "expression"
     ],
     "properties": {
      "locale": {
       "enum": [
        "en",
        "tr",
        "de",
        "fr",
        "es"
       ],
       "type": "string",
       "description": "en, tr, de, fr or es (default en)"
      },
      "use_24h": {
       "enum": [
        "true",
        "false"
       ],
       "type": "string",
       "description": "true or false (default true)"
      },
      "expression": {
       "type": "string",
       "description": "Cron expression, e.g. 0 9 * * 1-5"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "expression": {
       "type": "string"
      },
      "description": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "expression": "0 9 * * 1-5",
  "description": "At 09:00, Monday through Friday"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastx402-cron-describe-7e24fc48/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fastx402.tools](https://www.zero.xyz/host/fastx402.tools/llms.txt)