Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/vibestackdev/vibe-stack/supabase-rlsgit clone --depth 1 https://github.com/vibestackdev/vibe-stackWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.00188 |
| Opus 5 | $0.00000 | $0.00094 |
| Sonnet 5 | $0.00000 | $0.00038 |
| Haiku 4.5 | $0.00000 | $0.00019 |
Grade A, and why
supabase-rls scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Supabase Row Level Security (RLS)
ALWAYS assume RLS is enabled. NEVER generate queries that assume admin access by default.
RLS Policy Patterns: -- Own record only:
create policy "Users own data" on todos
for all using (auth.uid() = user_id);
-- Read-only public:
create policy "Public read" on posts
for select using (published = true);
Code rules:
- ALWAYS use anon/authenticated clients (not
service_role) for user operations - Service role client: ONLY use in server-to-server operations (webhooks, cron jobs)
- NEVER pass
service_rolekey to the browser - Use
select('specific, columns')notselect('*')for performance
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 28 lines · 0 tokens per session scan A ed44abc31c3c
supabase-rls is a cursor rule published in the GitHub repository vibestackdev/vibe-stack (7 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 188 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other cursor rules, from other repositories
cursor
SEO audit and implementation for Next.js, Remix, and React SPAs. Auto-attached to page, layout, and route files. Covers meta tags, Open Graph, Twitter cards, JSON-LD, sitemaps, robots.txt, i18n/hreflang, and image SEO.
diagnose
name: Issue Re-Diagnosis and Fix Template description: Template for AI to re-diagnose and fix issues that weren't resolved previously. globs.
always-on
Cursor rule "always-on" from jjcall/vibeship-boilerplate, covering core persona, how you work in this project, how you verify and validate, when you should ask for feedback or approval and how you communicate.
request
name: Issue Re-Diagnosis and Fix Template description: Template for AI to re-diagnose and fix issues that weren't resolved previously. globs.
upgrade-tests
// ✅ CORRECT: Upgrade package pattern await using ctx = testReactResource(appRouter, { server: { // server configuration }, client(opts) { return { links: [ httpLink({ url: opts.httpUrl, // client configuration }), ], }; }, }).
react-query-tests
// ✅ CORRECT: Legacy React Query pattern const ctx = konn() .beforeEach(() => createAppRouter()) .afterEach((ctx) => ctx?.close?.()) .done().