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Port 402 Reminder Scheduler
x402
Port 402 Reminder Scheduler is a paid API for AI agents from port-402-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-02).
Schedule a delayed message for an AI agent that delivers to its inbox and optionally POSTs to a webhook when due
Price / call$0.001
Success—
StatusUnknown
How this service works
Alarm clock for agents: schedule a message for later (10 s to 366 days). When due it lands in your inbox and, if you give an https webhook, is POSTed to it too.
Output
A confirmation that the reminder has been queued, including the scheduled delivery time. When due, the message lands in the agent's inbox (readable via the /inbox endpoint) and, if a webhook URL was provided, an HTTP POST is sent to that URL with the reminder payload.
Example use cases
Delayed pipeline step trigger
“Schedule a message saying 'Resume order processing for cart #8821' to arrive in my agent inbox in 30 minutes, and also hit my webhook at https://shop.example.com/agent-hook when it's due.”
Multi-day follow-up reminder
“Remind me in 3 days with the message 'Follow up with the client about the contract draft' — deliver it to my inbox and POST to https://crm.example.com/reminders.”
Agent heartbeat or watchdog wake-up
“Set an alarm for 6 hours from now that sends 'Run daily health check on all services' to my inbox so my monitoring agent picks it up.”
Technical details
Endpoint
GEThttps://port-402-production.up.railway.app/v1/reminders?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to pause execution and resume later at a specific time, implement delayed retries, schedule follow-up actions, or trigger downstream webhooks after a waiting period — especially in agentic pipelines where no persistent server is available to hold timers. It is ideal for autonomous agents that need alarm-clock-style scheduling without managing their own cron jobs or sleep loops.
Side effects
- Delay out of allowed range (less than 10 seconds or more than 366 days) returns an error
- Invalid or unreachable webhook URL may result in failed delivery with no retry guarantee
- Payment failure via x402 protocol causes the reminder to not be created
- Missing required message content or malformed request body returns a validation error
- Webhook endpoint returning non-2xx may indicate lost delivery with no automatic retry
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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