Replit
Cloud IDE with Agent that builds and deploys apps.
Replit Agent ships full apps end to end from prompts, hosted on Replit infrastructure. Strong mobile and educational usage.
What to check before shipping
Replit is good at getting a working demo fast. These are the production checks it typically skips.
Auth Check Only in Client Code
The auth gate runs only in a client component (a useEffect redirect or conditional render), so an attacker can bypass it by calling the API route directly.
IDOR Vulnerability on REST Endpoint
A REST endpoint returns resources by id without checking the caller owns them, so any signed-in user can read another user's data by changing the id.
Missing Row Level Security on Supabase Table
A public Supabase table has RLS disabled or an overly permissive policy, so any signed-in user can read or modify every row regardless of ownership.
Secret API Key Exposed in Client Bundle
A sensitive key (Stripe secret, OpenAI, Supabase service role) has a NEXT_PUBLIC_ prefix, so it is inlined into the browser bundle for anyone to read.
For a deeper dive on production readiness specific to Replit, see the Replit vibe coding guide.
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