security-rls-basics

Row Level Security (RLS) enforces data access at the database level, ensuring users only see their own data.

Skills
Databases
0

What it does and how to use it

A skill that teaches Claude Code to do databases tasks well. It is packaged knowledge the model uses whenever it is relevant.

Install the skill (command above).
In Claude Code, describe what you need - the skill turns on by itself when the context fits.
No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/security-rls-basics && curl -fsSL https://doutorai.pt/data/lib/skills__security-rls-basics.md -o .claude/skills/security-rls-basics/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

---
title: Enable Row Level Security for Multi-Tenant Data
impact: CRITICAL
impactDescription: Database-enforced tenant isolation, prevent data leaks
tags: rls, row-level-security, multi-tenant, security
---

## Enable Row Level Security for Multi-Tenant Data

Row Level Security (RLS) enforces data access at the database level, ensuring users only see their own data.

**Incorrect (application-level filtering only):**

```sql
-- Relying only on application to filter
select * from orders where user_id = $current_user_id;

-- Bug or bypass means all data is exposed!
select * from orders;  -- Retu

- 🔒 Full content on the Pro plan (€7.99/month) -

Need help with Claude Code?

Ask Dr AI - it explains things simply.

Need a tailor-made solution?

Not sure where to start with AI in your business? Get a free assessment and a tailored plan - no commitment.

Save hours every week with AI, no hassle

Doutor AI gives you 1,859 ready-to-copy AI prompts, by industry and in plain English - plus a complete technical library for those who want to go further.

See plans