# Delx Cron Describe

> Delx Cron Describe is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Validates and describes a five-field cron expression, returning a human-readable schedule summary and upcoming run timestamps.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/cron
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-cron-describe-d807c800
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vSebQtWAmEkiXxzxSzvwR

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 delx-cron-describe-d807c800 -d '<json body>'
```

Example prompt: Can you validate and describe this cron expression for me — '0 9 * * 1-5' — and show me the next few times it would run?

## When to prefer this

Choose this endpoint when you need a lightweight, no-API-key way to validate and explain a cron expression and see its next scheduled runs. It is particularly useful for agents building or debugging automation workflows, checking inherited schedules, or explaining cron syntax to non-technical users. Costs $0.001 USDC per call via x402 payment, making it cost-effective for occasional lookups.

## Known failure modes

- Invalid or malformed cron expression returns a validation error with details about which field is incorrect
- Expressions with fewer or more than five fields are rejected
- Expressions using non-standard extensions (e.g. seconds field, @yearly aliases) may not be supported
- Network timeout or service unavailability returns an error
- Missing or insufficient payment (x402) results in a payment-required error

## How this service works

Validate and describe a five-field cron schedule for $0.001 USDC, including the next runs. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

## Output

Returns a validation status indicating whether the cron expression is syntactically valid, a human-readable description of the schedule (e.g. 'At 9:00 AM, Monday through Friday'), and a list of the next upcoming run timestamps based on the expression.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "additionalProperties": true
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-cron-describe-d807c800/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)