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🚦 Pre-Launch Safety Check
It performs a local, read-only scan of your codebase to identify critical security oversights before they reach production.
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See it in action
You say
I'm about to deploy my Supabase and React app to Vercel. Can you check my code to make sure I didn't leave any doors open or leak any keys?
Your agent does
⚠️ Pre-Launch Safety Report
[Critical] PLS001 - Exposed API Key
- File:
src/api.js:12 - Evidence:
const STRIPE_KEY = "sk_live_51M..." - Impact: Anyone can use your Stripe account.
- Fix: Move this to an environment variable in Vercel.
[High] PLS004 - Public DB Access
- File:
supabase/migrations/schema.sql - Evidence:
FOR SELECT USING (true); - Impact: Your entire user table is readable by the public.
- Fix: Enable RLS and add a
auth.uid()check.
Manual Checklist:
- [ ] Verify Vercel CORS settings limit access to your domain.
What you get
About this skill
What it does
The Pre-Launch Safety Check is a specialized audit tool designed to catch the "silent killers" of a new product launch: leaked API keys, unprotected databases, and accidental debug modes. It performs a local, read-only scan of your codebase to identify critical security oversights before they reach production.
Why use this skill
While generic AI prompts might miss subtle configuration errors, this skill uses a structured scanner to cross-reference your code against a database of known security anti-patterns. It translates complex vulnerabilities into "founder-friendly" English, explaining exactly what the risk is and providing the specific remediation steps needed to fix it without breaking your app.
Supported checks
- Hardcoded secrets and API keys (Stripe, AWS, OpenAI, etc.).
- Committed environment variables (.env files).
- Publicly accessible database routes and missing auth guards.
- Permissive Row Level Security (RLS) and CORS configurations.
- Production deployments with debug mode enabled.
- Exposed storage buckets and default admin credentials.
The output provides a prioritized list of findings, severity levels, and a manual checklist for items that require a human eye, such as business logic flaws.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Creator
JustHandled Labs builds focused agent skills for the work nobody wants to do by hand. Each one is a single repeatable job done well: catching the security and data mistakes that quietly ship, keeping docs and tests honest, gating the commands an agent is about to run, sharpening writing, and handling the founder chores around launches, outreach, and brand setup. Not generic AI productivity. Specific workflows that are easy to run, review, and repeat. Maintained by H.J. Westerfield, with a background in communications, editing, project coordination, customer support, and practical AI systems. Tools for people who want useful automation without theatrical complexity.
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