Error monitoring for Replit apps

Your Replit app has real users now. This tells you the moment something breaks for them.

The fast way: ask your AI tool

Replit Agent can install this for you, or you can paste it yourself.

Paste this into your chat
Install Vigil error monitoring in this app. Follow the instructions at https://vigill.dev/skill?key=vg_pub_YOUR_KEY exactly, then confirm installation succeeded.

It will work out where the snippet goes, put it there, and check that it worked. If it gets stuck, the instructions tell it how to recover.

The manual way

Paste this in the <head> of your main HTML file, or your framework’s root layout — usually index.html, then redeploy.

index.html — html
<script src="https://vigill.dev/v.js" data-vigil-key="vg_pub_YOUR_KEY"></script>

This key is meant to be public — it can only send errors in, never read anything out. Do not move it into an environment variable; static hosts have nothing to read one back at runtime.

What happens next

Load your app once in a browser. Within a minute your dashboard confirms vigill.dev is watching. After that, if something breaks, you get an email that explains what happened in plain English — and a prompt you can paste straight back into Replit to fix it.

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