For people who built an app with AI
OpenAI quietly removed hard spending caps in 2026 — hit your budget and the charges just keep coming. Keys expire. Providers go down. Vigil watches your AI-built app around the clock and tells you what broke in plain English, with a fix prompt ready to paste into Claude, Cursor, or Lovable.
Free for the first watchers. No credit card.
● Vigil is watching · Overnight
Billing · 02:47
OpenAI
Your API spend is running 6× faster than normal — $31 in the last 3 hours. This usually means a runaway loop or a leaked key. OpenAI will not stop this automatically.
→ Paste this into your AI tool to add a spending brake
[copy fix]
Expiry · 02:52
Stripe
Your Stripe key expires in 6 days. When it dies, checkout dies with it. Two-minute fix now beats a broken launch day.
→ Step-by-step key rotation, written for humans
[view]
Resolved · 06:14
Supabase
Your app was unreachable for 22 minutes overnight — not your fault. Supabase had an outage and it’s fixed. Nothing for you to do. Go have breakfast.
Why apps like yours die
AI-built apps rarely die from bad code. They die from the boring stuff nobody told you to watch — usually in month two, usually at night.
Death № 1
The bill monster
Spending caps that used to be an emergency brake are now just an email. A leaked key or a runaway loop can charge you all night long. Vigil watches your spend velocity and raises the alarm the moment it turns weird.
Death № 2
The quiet expiry
API keys, SSL certificates, domains — they all expire silently, and when one dies, a piece of your app dies with it. Vigil tracks every expiry date you have and warns you a week before, not an hour after.
Death № 3
The 3am outage
Your app goes down and the first you hear of it is an angry user. Vigil pings your app constantly, checks whether it’s your fault or your provider’s, and tells you which — so you never debug someone else’s outage.
How it works
Step 1
Point Vigil at your app
Give us your app’s address and connect the services you use — Vercel, Supabase, OpenAI, Stripe. Takes about five minutes. Nothing to install.
Step 2
Vigil keeps watch
Around the clock: uptime, spend velocity, key and certificate expiry, and your providers’ own status pages — so we know whose fault it is before we wake you.
Step 3
You get human words + a fix
Every alert says what happened, whether it’s your problem, and includes a fix prompt written for the AI tool you build with. Paste, run, done.
“Can’t I just use…”
Sentry / Datadog
Brilliant — if you can read a stack trace. Their alerts look like ERR_CONNECTION_REFUSED 503. Ours look like sentences.
Spend gateways
Real spending caps, but you have to reroute your code through middleware. If the word “middleware” made your eyes glaze, that’s the point.
Security scanners
Great before launch — they check your code once. Vigil is for after launch: the watching never stops.
Hoping for the best
The most popular option. Works until the morning you open your billing page and sit down very slowly.
Pricing
$19
/month per app
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24/7 uptime, billing, and expiry watching
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Plain-English alerts by email — urgent ones by text
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Fix prompts for Claude, Cursor, Lovable & friends
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Provider outage detection: know whose fault it is
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Cancel anytime, no questions
Founding watchers lock in $15/month, forever.
The watch begins soon
Join the waitlist and be first in when Vigil opens. Founding watchers get lifetime pricing and a say in what we watch next.
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