Make your vibe-coded app ping your phone

The whole idea, in one minute

Lert gives you a private link. It looks like this: https://lert.dev/p/your-id. Anything that can reach the internet can "ping" that link, and your phone lights up with a notification. That's the entire product. No sign-up inside your app, no API keys, no settings screen. Just a link, and a phone that buzzes.

So to make your app tell you when something happens, you have your app send a tiny message to that link. The message has a title and a body — the two lines you see on a notification. Here's what one looks like:

POST https://lert.dev/p/your-id
{"title":"New sign-up","body":"someone just joined"}

That's it. When your app runs that, your phone shows "New sign-up — someone just joined." You never have to look at your dashboard to know something good happened.

You don't have to write it — ask your AI

Here's the part that makes this easy: you built your app with an AI, so let the AI wire this up too. Copy the prompt below, paste it into Claude, Cursor, Lovable, Bolt, or whatever you used, and drop your own Lert link in at the end. Your AI already knows your code, so it will find the right spot and add the notification for you.

Add a push notification using Lert. When a new user signs up,
send a POST to https://lert.dev/p/your-id with a JSON body
that has a "title" and a "body" describing what happened.
No API key or setup is needed — the link is all it takes.
Here's my Lert link: <paste yours here>

That's the whole workflow: paste, swap in your link, and your AI does the coding. If you want a notification for a different event, just change "when a new user signs up" to "when a sale is made" or "when the app hits an error." You describe the moment in plain English and let the AI handle the rest.

Things worth getting pinged about

Once you've done it once, you'll want it everywhere. A few favourites from people who vibe-code their own apps:

• A new user signs up — the little dopamine hit of watching your app grow, live on your lock screen.
• A sale or payment lands — nothing beats a "cha-ching" buzz. See the new sale notifications use case for this one.
• Something breaks — an error, a failed payment, a crash. Know before your users email you.
• A form gets submitted — a contact request, feedback, a waitlist join. Reply while it's fresh.

Each one is the same move: pick the moment in your app, and have it send a title and body to your link. You can add as many as you like.

Why this is so painless

Most notification tools want you to make an account, generate keys, and install a library before you can send a single buzz — a lot to ask of someone who just wants their app to text them. Lert throws all of that out. The link is the setup. That's exactly why it fits vibe coding: you're building fast and you don't want to stop and read documentation. One link, pasted into a prompt, and your app can reach your pocket. If you'd rather have your AI assistant fire notifications directly while it works, the MCP guide shows that route too.