See exactly where your AI-built app misbehaves.

You built an app with an AI agent. Viewo watches what your app actually does and shows you when it doesn't do what you asked.

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9:41
Customer used a paid feature for free.
alice@example.com · 3 features
Someone paid you 12 minutes ago and still can't get in.
Sara H. · $29 Pro plan
A customer's dashboard loaded another account's data.
acct_8821 saw acct_1190 · 2:47 PM
3 signups today didn't get a welcome email.
3 users · since 9:14 AM
Paid $29 fourteen minutes ago — Pro features still locked.
Marcus L. · since 2:33 PM

A lie detector for AI coding agents.

AI agents like Claude, Cursor, Lovable, Bolt, and Replit are good at writing code. They tell you it's done — but after the app ships, you have no clear way to tell whether it actually does what you asked. Reading the code shows what is supposed to happen, not what happened. Logs are hard to read and don't answer the question. Meanwhile, real users are already using it.

  • The agent says it's done. It can't tell you what happened after that.

  • The code shows what should happen, not what did.

  • Logs don't tell you which users were affected.

What Viewo does

Your app sends Viewo a record of important things as they happen — a signup, a payment, a file export. Viewo runs checks against those records and, when a check finds something wrong, shows you the exact case in plain English: what happened, which user, and when.

How Viewo works

  1. 1
    You paste a setup message to your AI agent.

    It's the same agent that built your app. The message tells it how to connect to Viewo. You don't write any code yourself.

  2. 2
    The agent sets up the checks.

    It updates your app to report important events to Viewo, writes the checks that look for problems, and tests each check on a sample before turning it on.

  3. 3
    Viewo runs the checks against your real activity.

    Every event your app sends is checked, continuously. When a check finds a problem, you see the exact case — what happened, which user, and when.

What it can catch

Anything that shows up in your app's events. Some examples:

Money & access

  • A customer charged twice within an hour.
  • A paid customer still locked out 60 seconds later.
  • A cancelled account still had access a minute later.

Permissions

  • A free user used the export feature.
  • A user read another user's records.
  • A non-admin hit an admin endpoint.

Things that didn't complete

  • A signup with no welcome email 60 seconds later.
  • A password-reset link neither used nor expired.
  • An order with no matching payment record.

What Viewo can't see

Viewo also tells you when it has gone blind. If your app stops sending an event it was watching, Viewo flags that as silent. If a check was never tested on a sample, Viewo marks it as unproven. It shows you the gaps instead of hiding them.

See what your AI-built app actually does.

Your agent says it works. Viewo shows you when it doesn't.

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