FREE TECHNICAL ASSESSMENT · NO ACCOUNT REQUIRED

Would your SaaS survive production?

Test the infrastructure behind your Next.js + Supabase + Stripe application against 10 common production failure points.

Run the Free Check

10 CHECKS · 5 MINUTES · NO CREDIT CARD

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Built for indie founders and small SaaS teams shipping with Next.js, Supabase and Stripe.

tenancy-probeSUPABASE · POSTGRES · RLS

THE 10 CHECKS

What gets tested

Ten production controls spanning tenant isolation, authorization, Stripe billing and operational integrity. Each answer maps to one deterministic classification — never to a percentage.

DATA ISOLATION

Tenant isolation

Cross-tenant reads via modified IDs, requests or queries

RLS coverage

Which tenant tables PostgreSQL actually protects

AUTHORIZATION

Authorization enforcement

Whether permissions exist beyond the frontend

RBAC & role changes

Privileges after a role changes mid-session

BILLING · STRIPE

Stripe webhook authenticity

Signature verification on every webhook path

Stripe webhook idempotency

What happens when the same event arrives twice

Stripe state synchronization

Keeping local state aligned with Stripe

OPERATIONAL INTEGRITY

API key revocation

How fast a revoked key actually stops working

Invitation race conditions

Double acceptance and manipulated invitations

Auditability

Whether logs prove who did what — and what changed

METHODOLOGY

Declared vs. proven

Production systems often have a distance between what the architecture says it does and what the system can actually demonstrate or enforce. This check maps what is reported, what needs review, and what appears to be a gap — based entirely on your answers.

REPORTED AS IN PLACEYour answers indicate the control is implemented at the appropriate architectural layer.

NEEDS REVIEWThe control exists, but coverage, enforcement, or verification is incomplete.

CRITICAL GAPThe described implementation relies on a bypassable layer, lacks an important enforcement mechanism, or otherwise leaves a meaningful control gap.

NOT VERIFIEDYou could not confidently establish that the control is implemented.

This is a self-assessment — not a code scan, not a security certification, and not a claim that anything is secure. It does not independently verify your answers. Its job is to show you exactly where to look, and what to test next.