Get SMS alerts from Uptime Kuma with SimGate

Route Uptime Kuma down/up notifications to SMS on your own number. Use a lightweight webhook relay to reshape the payload into a SimGate send.

Down/up SMS alerts

Your own number

Self-hosted friendly

Flat pricing

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Be paged by SMS when a monitor fails

Uptime Kuma sends a webhook describing the incident when a monitor changes state. SimGate expects its own send body (deviceId, phoneNumber, message), so you place a small relay in between that maps the incident into a text.

The relay can be an automation tool you already run (n8n or Make) or a tiny serverless function — anything that can receive a webhook and POST to SimGate.

Wire it up

Add a Webhook notification

In Uptime Kuma, add a Webhook notification pointing at your relay URL.

Map the payload

In the relay, build a message from the incident (e.g. monitor name + status) and set phoneNumber.

Call SimGate

Have the relay POST to /v1/sms/send with your API key.

Attach to monitors

Enable the notification on the monitors you care about.

What the relay sends to SimGate

http

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POST https://api.simgate.app/v1/sms/send
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x-api-key: YOUR_API_KEY
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Content-Type: application/json
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{
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  "deviceId": "android-5q15b182f2704gbz",
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  "phoneNumber": "+1234567890",
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  "message": "Hello from SimGate!"
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}

Your relay reshapes the Uptime Kuma webhook into this SimGate send.

Quickest path

If you already run n8n, point Uptime Kuma's webhook at an n8n Webhook node, then add an HTTP Request node to SimGate — no separate service to host.

Frequently asked questions

Why do I need a relay?

Uptime Kuma sends its own incident payload, while SimGate expects deviceId, phoneNumber, and message. A small relay maps one to the other. n8n, Make, or a tiny function all work.

Can I get both down and up alerts?

Yes — include the monitor's status in the message your relay builds so you know whether it recovered.

Turn your phone into an SMS API

Send and receive SMS from your own SIM at a flat monthly price. Install the app, connect a device, and call the API in minutes.

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