supabase-rls-policy-designer

Design granular Row Level Security policies for Supabase databases.

Updated Apr 19, 2026
One-click install
npx skills add https://github.com/saranskumar/anti-slop --skill supabase-rls-policy-designer
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: supabase-rls-policy-designer
Source: https://github.com/saranskumar/anti-slop/tree/main/skills/supabase-rls-policy-designer
Command: npx skills add https://github.com/saranskumar/anti-slop --skill supabase-rls-policy-designer

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Supabase apps often struggle with unsafe or ambiguous access controls, leading to data leaks and maintenance headaches. This skill provides a structured approach to designing Row Level Security policies that are enforceable, explainable, and auditable across multi-tenant schemas.

Core Features & Use Cases

  • Policy modeling for ownership: ensures that only owners can access their rows in user-owned tables.
  • Membership-aware access: supports workspace or team membership checks to gate data.
  • Testable policy drafts: outputs SQL policy drafts, a policy matrix, and edge-case scenarios for validation.

Quick Start

Design an initial set of RLS policies for a given Supabase schema with user-owned data and provide test queries.

Frequently Asked Questions about supabase-rls-policy-designer

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I design Supabase Row Level Security policies for multi-tenant data access?

You design Supabase Row Level Security policies by defining an access model summary and a policy matrix that enforces ownership, membership, and admin overrides. This generates SQL policy drafts and edge-case scenarios to validate safe, auditable multi-tenant data access.

What is the best way to enforce ownership-based access control in Supabase?

The best way to enforce ownership-based access control in Supabase is to model policies that restrict row access to designated owners. This approach generates specific SQL policy drafts and test queries to ensure only owners can access their rows in user-owned tables.

How do I handle workspace membership checks in Supabase RLS policies?

You handle workspace membership checks in Supabase RLS policies by incorporating membership-aware access rules into your policy matrix. This generates SQL drafts that gate data based on team or workspace membership validation for secure multi-tenant schemas.

Can Supabase RLS policy designs be tested for edge cases and data leaks?

Yes, Supabase RLS policy designs can be tested for edge cases. The design process outputs an access model summary, a policy matrix, SQL policy drafts, edge-case analyses, and testing guidance to validate implementation and prevent data leaks across multi-tenant schemas.

Do I need an existing database schema to generate Supabase RLS policies?

You need an existing database schema to generate Supabase RLS policies effectively. Providing your schema allows the policy designer to map ownership, membership, and admin override rules accurately, resulting in precise SQL drafts and an auditable policy matrix.

Why does my Supabase multi-tenant setup have ambiguous data access controls?

Your Supabase multi-tenant setup has ambiguous data access controls due to unstructured Row Level Security rules. Applying a structured policy design with ownership checks, membership validation, and admin overrides resolves these maintenance headaches and prevents data leaks.