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supabase Cursor ruleA

supabase from darknecrocities/skillbuilder is a Cursor rule: instructions the Cursor agent follows in that repo.

Install it, pinned

mdr add darknecrocities/skillbuilder/.cursor/rules/supabase.mdc@git:20261029.1aa6bef

Pins git:20261029.1aa6bef in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 14 of 14 checks passed
Kind: Cursor rule
Repository: darknecrocities/skillbuilder
Path: .cursor/rules/supabase.mdc
Versions recorded: 1
Latest version: git:20261029.1aa6bef, committed Oct 29, 2026
Size: 5,527 bytes
Repository stars: 13
License: none declared

Supabase fullstack architecture, PostgreSQL Row Level Security (RLS), Supabase Auth, Edge Functions, and pgvector embeddings.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Supabase Architecture, PostgreSQL RLS & Edge Functions (`/supabase`)

> **Philosophy**: *Mandatory Row Level Security on every table. Client access is untrusted. Zero client exposure of the service_role key. Tenant policies must anchor to auth.uid(). Use prepared statements for pgvector similarity search.*

This skill establishes defensive engineering standards for developing and deploying applications on **Supabase** and **PostgreSQL**.

---

## 1. Quick Navigation & Progressive Disclosure

| Resource Type | Document | Description |
| :--- | :--- | :--- |
| **Reference** | [references/supabase-postgresql-rls.md](references/supabase-postgresql-rls.md) | Mandatory RLS activation, tenant scoping policies, service role quarantine. |
| **Reference** | [references/edge-functions-and-pgvector.md](references/edge-functions-and-pgvector.md) | Deno edge functions, pgvector HNSW indexing, similarity search RPCs. |
| **Utility** | [scripts/verify_supabase_rls.py](scripts/verify_supabase_rls.py) | Audits SQL schemas for unprotected tables, missing RLS policies, and service role leaks in client code. |

---

## 2. The Core Supabase Architecture Gates

```mermaid
flowchart TD
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add darknecrocities/skillbuilder/.cursor/rules/supabase.mdc@sha256:3e67e4dea321a51e

The line at the top of this page pins the label git:20261029.1aa6bef, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_hvrgspikycivhz6p.svg)](https://markdownregistry.com/a/art_hvrgspikycivhz6p)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 29, 2026.

version	committed	commit	size	audit
git:20261029.1aa6bef latest	2026-10-29	1aa6bef	5,527 B	A	view

Audit of the latest version

A 14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Size between 200 bytes and 200 KB (5527 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

darknecrocities/skillbuilder · 13 stars · license none declared · pushed 2026-10-29 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hvrgspikycivhz6p
GET https://markdownregistry.com/api/v1/resolve?ref=darknecrocities/skillbuilder/.cursor/rules/supabase.mdc
GET https://markdownregistry.com/api/v1/blob/3e67e4dea321a51ec4a412e9fa2bda55fb893c0b01ae263abcdcd9fb2bf4af49

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: Cursor rules vs AGENTS.md · which agent file does what.

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