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For the apps you ship. And the peace of mind to keep creating.

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  1. Free health check

Give your app a health check.

Paste your production address. We open the page the way a browser does, read its own scripts, and tell you what we saw — in a few seconds, with no account.

Passive checks only, on sites you own or are authorised to test. Not a security certification.

What the check reads

  • Does it answer?

    The address asked for the way a browser asks: whether it answers, how, and where it sends you.

  • What it runs on

    The host, the framework and the builder, recognised from what the page itself says.

  • Security headers

    The six that matter, each with what it does for your visitors in one line.

  • Keys in public code

    Stripe, OpenAI, Anthropic, Supabase service-role and AWS key shapes in the scripts the page ships.

  • Money

    A test Stripe key on a live site, and what one visit can and cannot prove about payments.

  • Database exposure

    On Supabase: which tables anyone can read with the key your site already hands out.

One visit to one page cannot see a payment that failed, a webhook that stopped or a publish that broke sign-in. Those are found by watching the app over time — which is what Keelnest does, free for your first app.

Watch my app free