Kingy × Supabase · AI SaaS Launch Kit

Turn the demo into a reviewable launch plan.

Pick where you are starting. The kit shows the next controls, failure tests and evidence without touching your project or storing your answers.

Choose my starting point
  • Synthetic state
  • No payments
  • No customer data
  • Guide, not certification
12-minute prototype
The video demonstrates a prototype. This kit prepares the controls and evidence needed for a production review.
Last verified1 Sep 2026
Kit version2.0 · Synthetic
EvidenceOfficial docs + release checks
BoundaryHuman review required
01

Choose your starting point

Start with the gap you have now.

Your choice opens the most useful stage. Nothing is locked, and every answer stays in this page’s memory.

Recommended next stepStage 2: Auth-linked ownership
Continue with Auth and RLS
02

Production-minded architecture

Put each privilege behind a boundary that can enforce it.

Public configuration stays in the browser. Secrets and expensive work cross the server. Ownership remains enforced in the database.

1BrowserSession + publishable key
2Application serverSecrets + limits + origin checks
3SupabaseAuth + RLS + private Storage
4Provider webhooksVerified + idempotent events
Client-safe Project URL, publishable key and signed-in session
Server-only Service-role, billing and AI-provider secrets
Data-enforced RLS, grants and private bucket policies
03

Guided implementation

Four stages, with the evidence beside the work.

Open a stage for its task list, review target and a bounded template. Adapt every example to your schema and threat model.

Stage 2 · Identity & data

Auth-linked ownership
Every exposed row has a real owner and an enforced policy.
  1. 1

    Reference auth.users(id) from application-owned rows.

  2. 2

    Enable RLS for every table exposed through the Data API.

  3. 3

    Define operation-specific grants and policies using auth.uid().

  4. 4

    Test anonymous access and two-user cross-account denials.

Evidence target

User A cannot read or mutate User B’s rows; anonymous requests see only intended public data.

Supabase row-level security guide
Ownership policy shape
alter table public.projects enable row level security;

revoke all on public.projects from anon;
grant select, insert, update, delete
  on public.projects to authenticated;

create policy "owners read projects"
on public.projects for select to authenticated
using ((select auth.uid()) = owner_id);

Reference pattern only. Review names, grants, failure behavior and environment ownership for your app.

04

Synthetic negative-path explorer

A release case is incomplete until failure behaves correctly.

Select a failure path to see the expected denial and the evidence a reviewer should request. This explorer does not contact your app.

Expected denial

Anonymous row read
anon → SELECT private project
Expected behavior

No private rows are returned and no identifying detail leaks.

Evidence to keep

HTTP response plus a database assertion showing zero visible rows.

A passing example does not certify your implementation. Run the test against an isolated environment with synthetic fixtures.

05

Local review summary

Prepare the evidence pack before you ask for approval.

Check only what you can prove. Your selections stay in memory and disappear when the page refreshes.

0%prepared
8 evidence areas still need work
Completion means prepared for review, not secure or production-ready.
x
Identity: Auth identity owns every user-scoped row Data: RLS and grants cover every exposed table Secrets: Server credentials stay out of client bundles+ 5 more areas
IdentityAuth identity owns every user-scoped row
DataRLS and grants cover every exposed table
SecretsServer credentials stay out of client bundles
BillingBilling events are verified and idempotent
StoragePrivate files use owner-bound policies
AbuseRequest and AI usage limits run before expensive work
TestsDenied paths have automated tests
OperationsRollback, backup and alert ownership are documented

Continue with official tooling

Create the project, then return to close each evidence gap.

The partner link opens Supabase. Kingy can observe the outbound placement only; downstream account and project outcomes remain Supabase-side data.

Create a Supabase project
A privacy-safe measurement plan

Kingy-observed

Article view, video activation, Launch Kit open and outbound placement. Checklist answers and score remain local.

Supabase aggregate

Account, project, first action, seven-day activity and paid conversion. Missing data stays unknown.

launch_kit_viewlaunch_kit_page

About this resource

Kingy controls the testing and editorial conclusions.

Supabase is a Kingy customer, and Kingy previously produced paid Supabase video integrations. This companion Launch Kit was created at no additional charge. It uses synthetic state, does not connect to a Supabase project, and does not guarantee signup, security, performance, revenue or conversion outcomes.