Verify the decisions you didn't make
The strength of an agent - autonomy - is also the review challenge. It wired up auth, database rules, environment config, and deployment without per-step sign-off, optimizing for a working result. Production-grade hardening is rarely the path of least resistance, so check it explicitly.
- Database rules and ownership
Confirm tables enforce per-row ownership rather than shipping with permissive defaults.
- Authentication boundaries
Verify protected routes and APIs do a real server-side session check.
- Secret management
Ensure keys live in server-side secrets, not in client-reachable code or committed files.
- Exposed admin or debug surfaces
Look for scaffolded admin panels, debug routes, or seed endpoints that shouldn't be public.
Scale and cost of an autonomous build
Agents reach for managed services and default configurations, which is convenient and occasionally costly or fragile under load. Review the database access patterns and price the hot paths the same way you would any generated app.
- Query patterns
Check for N+1 queries, unbounded reads, and missing indexes before real data arrives.
- Per-operation costs
Trace the busiest user action to the services it bills and model it at real volume.
The pre-launch checklist
- Audit database rules for per-row ownership
Replace permissive defaults with real authorization.
- Confirm server-side auth on every protected surface
No relying on client-side redirects.
- Move all secrets into server-side storage
Rotate anything that was exposed.
- Remove or protect scaffolded admin/debug routes
Nothing internal should be publicly reachable.
- Review query patterns for scale
N+1, unbounded reads, and missing indexes.
- Model hot-path costs at real volume
Cache or rate-limit expensive operations.
- Verify the dependency tree
Confirm packages are real and pinned.
Run this checklist on your repo, automatically
PeakStack scores every commit for security, scalability, and cost - with the exact line and a fix.
Request accessFAQ
Is an app built by Replit Agent safe to deploy?
It will run, but autonomy means hundreds of unreviewed decisions. Before going live, explicitly verify access control, authentication boundaries, secret handling, and any scaffolded admin or debug surfaces.
What should I check first in a Replit Agent app?
Database ownership rules and authentication boundaries - the two places permissive defaults most often slip through and the highest-impact to get wrong.
How do I keep an agent-built app safe as it grows?
PeakStack scores security, scalability, and cost on every commit, so changes the agent (or you) make later are reviewed automatically and regressions surface immediately.