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Card 388 of 9842026-09-28 issue

Observed arrival · 2026-09-28

Keysnag adds a security check before the push

keysnag.com Visit website
Editorial interest 79/100 Selection signal · not a rating of the site

A free, open-source command-line tool that checks AI-built apps for security issues before code is pushed.

Landing page captured for the 2026-09-28 issue.
For
Founders and developers shipping AI-built apps
Worth noticing
Its optional two-account check tests whether one user can access another’s Supabase data through the live API, without changing data.

Field notes

The hook is described as editor-independent: it fires on git push whether the developer is using Cursor, VS Code, a terminal, or CI. Its checks span local code and dependencies as well as optional live-site probes; those live checks are skipped until the required URL or credentials are supplied. The homepage reports a production-app run that went from 144 findings to 16 after rule tuning.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use

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keysnag.com

Landing page observed 2026-09-28. The live site may have changed.