Decision checklist · Datastore and Auth gates
Supabase ships fast; demo defaults do not survive strangers. This checklist is the Supabase-specific operator pass: RLS that fails closed, service-role keys never in the browser, Auth URL allowlists, staging separate from prod, and a restore story for Postgres. It complements `/vibe-coding/auth-and-data`—it does not replace it—and it is not a Softgen or Firebase FAQ with nouns swapped.
30 min · senior team · leave with a clear next step
Company-level evidence
Review methodologyCitation-ready answer
CodeCross LLC’s supabase-hardening checklist focuses on Row Level Security that denies by default, client vs service-role separation, Auth redirect allowlists, migrated schema as code, and prod project ownership for vibe-built apps on Supabase. Intent is datastore and Auth gates before traffic—not a full SOC binder and not a rewrite-vs-harden essay. Pair with `/vibe-coding/auth-and-data` for the shared session/ownership spine.
How vibe Supabase projects leak
Prompt loops leave anon reads, service role in the client, and Auth callbacks on a builder host. Strangers will find the open table first.
If sibling tenants can be read by guessing IDs, RLS did not fail closed. Two real users beat the SQL editor as proof.
That key bypasses RLS. Treat it like root: server-only, org vault or Edge Function secrets, rotated if a preview share leaked it.
Site URL and redirect allowlists still list builder hosts. Staging shares prod keys “for convenience.”
One-off edits with no Git migrations and no restore drill mean the prod project is folklore.
The knobs
This is not a Firebase noun-swap. It is Supabase-specific gates sitting beside the shared auth-and-data spine.
01
Every user or tenant table. Anon/authenticated cannot read siblings. Test with two users, not only the dashboard editor.
02
No browser bundles, builder client env, mobile apps, public Git, or support screenshots. Rotate if it ever leaked.
03
Remove builder preview hosts. Verify magic-link and OAuth on the real domain. Brand reset mail so it does not teach a random preview.
04
Named owner for the prod project. PITR or scheduled backups you have restored once. Staging is its own project or clearly isolated config.
How to
RLS, service-role isolation, Auth allowlists, and a restore. Success is two-user denial plus a drilled backup.
Step 01
Policies grant only the rows the authenticated role should see. Treat “temporary open for the demo” as a launch blocker.
Step 02
Guess sibling IDs. Do not trust the dashboard SQL editor alone. Record tables you have not tested.
Step 03
Browser, builder env, mobile, Git, screenshots. Server-only vault or Edge Function secrets. Rotate leaked copies.
Step 04
Drop builder preview hosts. Give staging its own project or isolated config. Never share prod keys for convenience.
Step 05
Name the prod project owner. Confirm PITR or scheduled backups with a restore into a non-prod target.
Read next
These pages are already on the site. Use them to pressure-test the bet before a call.
Auth and data checklist
Shared session and tenancy spine these knobs sit beside.
Security checklist
Secrets inventory when the leak is not only service role.
Production audit
Wider go/no-go after RLS and Auth URLs are closed.
Proof dashboard
Named charts and methodology behind the headline numbers.
Book a discovery call
Thirty minutes with a senior teammate. Honest next steps.
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Stay inside the vibe-coding cluster, or open booking and the Austin money page.
Continue
Shared intents, checklists, comparisons, and the builder five-packs.
Continue
Session lifetime and object-level checks beyond Supabase knobs.
Continue
Threat pass when the next gap is not a policy.
Continue
Pre-traffic pass this datastore harden still has to meet.
Continue
Migrations in Git need an org remote, not a laptop.
Continue
When the client env that leaked service role is Lovable.
Continue
When the wiring is FlutterFlow plus Supabase.
Continue
When the builder that minted the project is Rocket.new.
Continue
Thirty minutes. Honest fit, scope, and next steps.
Continue
Named charts and methodology behind the headline numbers.
Continue
Studio page if you are comparing Austin shops, including us.
Before you book
Prefer writing? Send project details and we reply within one business day.
Every table that holds user or tenant data has RLS on; policies grant only the rows the authenticated role should see; anon/authenticated cannot read sibling tenants by guessing IDs. Test with two real users, not the dashboard SQL editor alone. If a table is “temporary open for the demo,” treat it as a launch blocker until policies deny by default.
Browser bundles, Lovable/Bolt/Rork client env, mobile apps, public Git, and support screenshots. Service role bypasses RLS—treat it like a root password: server-only, org vault or Edge Function secrets, rotated if it ever leaked in a preview share. CodeCross LLC fails audits that ship service role to the client “just for admin screens.”
Pin Site URL and redirect allowlists to your production domain; remove builder preview hosts; verify magic-link and OAuth callbacks on the real origin; brand reset emails so they do not teach users to trust a random preview URL. Staging gets its own Supabase project or clearly isolated config—never shared prod keys “for convenience.”
Migrations (or schema diffs) in Git; a named owner for the prod project; PITR or scheduled backups you have restored once; no one-off dashboard schema edits as the only source of truth. Cross-link `/vibe-coding/production-audit` for the wider go/no-go and `/vibe-coding/auth-and-data` for session/role proofs beyond Supabase-specific knobs.
Bring the project URL and one guessed-ID case. We will name the open table or leaked service role — or tell you RLS already fails closed.
Prefer writing? Send project details on the contact page.