# cron.0000402.xyz Delayed Webhook Scheduler

> cron.0000402.xyz Delayed Webhook Scheduler is a paid API for AI agents from cron.0000402.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-10, last successful call 2026-05-14).

Schedules a one-shot delayed webhook POST delivery to a specified URL after a given number of seconds, with automatic retries on failure

## Facts

- Endpoint: POST https://cron.0000402.xyz/schedule?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Last successful call: 2026-05-14
- Success rate: 83% of calls made through Zero
- Rating: 5.0 / 5 from 1 review
- Activations on Zero: 7
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cron-0000402-xyz-7d79f4c6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MaB4bPEPhFu7JNSXN3RqV

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-0000402-xyz-7d79f4c6 -d '<json body>'
```

Example prompt: Schedule a webhook to fire a signed POST to https://myapp.example.com/hooks/payment-confirmed in 300 seconds — I need it to retry up to 3 times if it fails, and give me back a job ID so I can cancel it if needed.

## When to prefer this

Choose this endpoint when you need a simple, pay-per-use one-shot delayed webhook without managing your own cron infrastructure. Ideal for lightweight automation, deferred callbacks, post-payment confirmations, or any scenario requiring a timed HTTP trigger with retry guarantees and cancellation support, especially in agentic workflows operating on Base Mainnet with USDC micropayments.

## Known failure modes

- Invalid or unreachable webhook URL causes delivery failure and exhausts all 3 retries
- Delay value of zero or negative seconds may cause immediate or rejected scheduling
- Payment failure on Base Mainnet results in job not being created
- Webhook target URL returns non-2xx responses triggering retries
- Job not found when querying status if incorrect job identifier is used

## How this service works

Pay $0.10 USDC to schedule a one-shot webhook delivery. Provide a URL and a delay in seconds — the server fires a signed POST to your URL when the timer expires. Automatic retries on failure (up to 3 attempts). Network: Base Mainnet. Each request creates one delayed webhook job and returns identifiers for status checks and cancellation.

## Output

Returns a job identifier for status polling and a cancellation identifier. When the timer expires, the server fires a signed POST request to the provided URL. If the initial delivery fails, the system automatically retries up to 3 times before marking the job as failed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "name": {
   "type": "string",
   "description": "Optional short label used to identify this job in status responses. Max 128 characters."
  },
  "payload": {
   "type": "object",
   "description": "Optional JSON object forwarded unchanged inside the webhook body under the payload key. Max 4 KB."
  },
  "webhook_url": {
   "type": "string",
   "description": "Public http or https URL that will receive the webhook when the timer fires. Private IPs, localhost, and cloud metadata endpoints are blocked."
  },
  "delay_seconds": {
   "type": "integer",
   "description": "How many seconds from now to fire the webhook. Minimum 10 seconds, maximum 2592000 (30 days)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "job_id": "550e8400-e29b-41d4-a716-446655440000",
  "status": "pending",
  "message": "Job scheduled. POST will be sent to your webhook in 3600 seconds.",
  "fires_at": "2025-01-15T14:00:00+00:00",
  "cancel_token": "f47ac10b-58cc-4372-a567-0e02b2c3d479"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cron-0000402-xyz-7d79f4c6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cron.0000402.xyz](https://www.zero.xyz/host/cron.0000402.xyz/llms.txt)