# AgentRXI Scheduled Callbacks

> AgentRXI Scheduled Callbacks is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-15).

Schedule an HTTP callback to any HTTPS URL at a specific future time (1 minute to 30 days ahead), with custom method, headers, and body, with up to 3 retries.

## Facts

- Endpoint: GET https://agentrxi.com/v1/schedule?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrxi-scheduled-callbacks-130fd529
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GRE8soRqxvcnnTQ9ONBk5

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 agentrxi-scheduled-callbacks-130fd529
```

Example prompt: In 30 minutes, call https://myapp.example.com/wake with a GET request — I need my agent to check in on that workflow automatically.

## When to prefer this

Choose this when an agent or workflow needs to defer an action to a future time without maintaining a live process or cron job — especially for self-waking agents, delayed webhooks, or timed pipeline triggers. Preferred over local timers when the agent runtime may shut down between invocations, or when automatic retry on failure is needed.

## Known failure modes

- Invalid or non-HTTPS target URL returns an error
- Scheduled time outside 1-minute to 30-day window is rejected
- Target URL returns non-2xx responses, triggering up to 3 retries before marking as failed
- Invalid ISO datetime format causes a parse error
- Unknown schedule ID returns not-found error
- Callback delivery delayed by a few minutes due to scheduling granularity

## How this service works

Scheduled callbacks: have any https URL called at a set time (1 minute to 30 days ahead, fired within a few minutes of it) with your method, headers and body, so an agent can wake itself up later. Retries up to 3 times; check status with the id. Also callable as GET with the same fields as query parameters.

## Output

Returns a schedule ID and confirmation of the scheduled callback, including the target URL, method, and scheduled time. When checking status by ID, returns the current state (pending, fired, failed), retry count, and delivery details.

## 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",
     "properties": {
      "at": {
       "type": "string",
       "description": "ISO date-time"
      },
      "id": {
       "type": "string",
       "description": "Check an existing schedule"
      },
      "url": {
       "type": "string"
      },
      "body": {
       "type": "string"
      },
      "method": {
       "type": "string"
      },
      "delay_seconds": {
       "type": "integer",
       "description": "Instead of at"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrxi-scheduled-callbacks-130fd529/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentrxi.com](https://www.zero.xyz/host/agentrxi.com/llms.txt)