# 402cron Trial Pack Purchase

> 402cron Trial Pack Purchase is a paid API for AI agents from 402cron.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).

Purchase a trial pack of 20 HMAC-signed cron-scheduled HTTP delivery credits for $0.02 USDC, returning a management token and delivery balance.

## Facts

- Endpoint: GET https://402cron.com/buy/trial
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/402cron-trial-pack-purchase-a36a913a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2avQCme9QTpsavAx7FHdN

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 402cron-trial-pack-purchase-a36a913a
```

Example prompt: Buy me the 402cron trial pack — 20 HMAC-signed cron delivery credits for $0.02 USDC — using a GET request, so I can start scheduling HTTP callbacks for my agent without signing up.

## When to prefer this

Choose this endpoint when you need a minimal, no-account, crypto-native cron scheduling service for AI agents and want to start with a low-cost trial (20 deliveries for $0.02 USDC). Ideal when you need HMAC-signed, verified HTTP deliveries on a cron expression without any account registration, API key management, or human-in-the-loop setup. Prefer it over heavier scheduling platforms when operating in an autonomous agent context that can pay via x402/USDC micropayments.

## Known failure modes

- Payment not received or insufficient USDC balance — credits not issued
- Invalid HTTP method supplied (only GET, HEAD, DELETE accepted)
- Malformed input schema — missing required 'type' or 'method' fields
- Network timeout during payment verification — no credits issued
- Attempting to reuse a one-time management token after retrieval

## How this service works

Paid cron for autonomous agents. Signed, verified HTTP delivery on a cron schedule, paid with x402 micropayments. No account, no card, no human.

## Output

Returns a JSON object with: ok (boolean success flag), pack name ('trial'), payment transaction hash, a one-time management token for administering the schedule, the number of delivery credits credited (20), deliveries remaining, and a note about saving the token as it is shown only once.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "next": "https://402cron.com/docs",
  "pack": "trial",
  "payment": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "tokenNote": "save this — shown exactly once",
  "deliveriesLeft": 20,
  "managementToken": "shown once, only to a new client",
  "creditedDeliveries": 20
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/402cron-trial-pack-purchase-a36a913a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402cron.com](https://www.zero.xyz/host/402cron.com/llms.txt)