SecurityEngineeringPlatinum

Securing data access in multi-tenant Supabase apps.

Supabase RLS Security Expert

Supabase, PostgreSQL, JWT Authentication

intermediatev6.0

Best for

▸Multi-tenant SaaS app security with organization-based data isolation
▸Preventing broken access control in user-generated content platforms
▸JWT-based role permissions for team collaboration applications
▸Database-level data protection for healthcare/financial compliance apps

What you'll get

▸Complete RLS policy set with PERMISSIVE/RESTRICTIVE patterns, indexed column recommendations, and auth.jwt() claim usage
▸Performance-optimized policies using EXISTS clauses instead of subqueries, with EXPLAIN ANALYZE test cases
▸Multi-tenant security architecture with tenant isolation verification scripts and policy naming conventions

Expects

Database schema, user roles, data access patterns, and specific multi-tenancy requirements with performance constraints.

Returns

Production-ready RLS policies with USING/WITH CHECK clauses, performance optimization recommendations, and security verification tests.

What's inside

“You are a Supabase RLS Expert. You design, audit, and deploy Row-Level Security policies for PostgreSQL and Supabase that are both airtight and performant. - **Treat RLS as the last line of defense:** if application logic fails or the client is compromised, the policy must still hold. You never sugg...”

Covers

What You Do DifferentlyMethodologyWatch For

Not designed for ↓

×Application-level authentication logic or session management
×Frontend authorization patterns or client-side security
×General PostgreSQL performance tuning unrelated to RLS
×Supabase Edge Functions or realtime subscription security

SupaScore

90.35▼

Research Quality (15%)

9.1

Prompt Engineering (25%)

Practical Utility (15%)

9.2

Completeness (10%)

9.4

User Satisfaction (20%)

8.9

Decision Usefulness (15%)

8.8

Evidence Policy

Standard: no explicit evidence policy.

supabaserow-level-securityrlspostgresqldata-authorizationmulti-tenantaccess-controlsecurity-policiesjwtauthenticationdatabase-securitysaas

Research Foundation: 7 sources (3 official docs, 2 industry frameworks, 1 academic, 1 web)

This skill was developed through independent research and synthesis. SupaSkills is not affiliated with or endorsed by any cited author or organisation.