ag-referencia-supabase

ag-referencia-supabase is a skill for Claude Code from andregusman-raiz/a-gusman-claude. It costs 24 tokens per session (867 once invoked), scanned A, original, MIT.

A reference guide for building applications with Supabase, a hosted service commonly used for databases, authentication, and storage. It covers PostgreSQL, database migrations, row-level security (rules controlling which rows users can access), and Zod schemas for checking data in TypeScript.

In plain words
What is it for?
Use it when working with Supabase databases, writing migrations, configuring row-level security, or defining Zod schemas and repository code in TypeScript.
Why use it?
It gives developers established patterns for organising database code and validating data. This reduces guesswork when setting up access rules, migrations, and typed application data.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Good fit Use it when working with Supabase databases, writing migrations, configuring row-level security, or defining Zod schemas and repository code in TypeScript.

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Install with agentmods
npx agentmods add skills/andregusman-raiz/a-gusman-claude/ag-referencia-supabase
Install

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.

Any agent
npx skills add andregusman-raiz/a-gusman-claude --skill ag-referencia-supabase
Clone the repo
git clone --depth 1 https://github.com/andregusman-raiz/a-gusman-claude

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ag-referencia-supabase

README.md
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Your own site
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agentmods 80×15 button for ag-referencia-supabase

Your own site · 80×15
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Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 867 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00024 $0.00867
Opus 5 $0.00012 $0.00434
Sonnet 5 $0.00005 $0.00173
Haiku 4.5 $0.00002 $0.00087

Measured 12d ago against content hash 93009f002df2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

ag-referencia-supabase 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 12d 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.

archive/reference-skills-deprecated-2026-04-22/ag-referencia-supabase/SKILL.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: Supabase Patterns

Referencia de patterns para Supabase, PostgreSQL, RLS, e integracao com TypeScript.

Quando Ativar

  • Trabalhando com banco de dados Supabase
  • Criando migrations
  • Configurando RLS
  • Definindo schemas com Zod

Zod Schema Pattern

import { z } from 'zod';

export const userSchema = z.object({
  id: z.string().uuid(),
  email: z.string().email(),
  name: z.string().min(1).max(255),
  role: z.enum(['superadmin', 'core_team', 'external_agent', 'client']),
  created_at: z.string().datetime(),
  updated_at: z.string().datetime(),
});

export type User = z.infer<typeof userSchema>;

export const createUserSchema = userSchema.omit({
  id: true, created_at: true, updated_at: true,
});
export type CreateUser = z.infer<typeof createUserSchema>;

export const updateUserSchema = createUserSchema.partial();
export type UpdateUser = z.infer<typeof updateUserSchema>;

Repository Pattern

export const userRepository = {
  async findById(id: string): Promise<User | null> {
    const { data, error } = await supabase
      .from('users').select('*').eq('id', id).single();
    if (error) throw error;
    return data ? userSchema.parse(data) : null;
  },

  async create(input: CreateUser): Promise<User> {
    const { data, error } = await supabase
      .from('users').insert(input).select().single();
    if (error) throw error;
    return userSchema.parse(data);
  },
};

RLS (Row Level Security)

Patterns Comuns

-- Usuario ve apenas seus dados
CREATE POLICY "users_own_data" ON public.users
  FOR ALL USING (auth.uid() = id);

-- Todos leem, apenas dono edita
CREATE POLICY "posts_read_all" ON public.posts
  FOR SELECT USING (true);
CREATE POLICY "posts_write_own" ON public.posts
  FOR INSERT WITH CHECK (auth.uid() = author_id);

-- Baseado em role
CREATE POLICY "admin_full_access" ON public.users
  FOR ALL USING (
    EXISTS (SELECT 1 FROM public.users WHERE id = auth.uid() AND role = 'superadmin')
  );

-- Baseado em organizacao
CREATE POLICY "org_members_only" ON public.projects
  FOR SELECT USING (
    org_id IN (SELECT org_id FROM public.org_members WHERE user_id = auth.uid())
  );

Read the full file on GitHub · 131 lines

Changes

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.

  1. 12d ago First seen · 131 lines · 24 tokens per session scan A 93009f002df2

Subscribe to this mod's changes

ag-referencia-supabase is a skill published in the GitHub repository andregusman-raiz/a-gusman-claude (19 stars, last pushed 3d ago), licensed MIT. It adds 24 tokens to every session and 867 once invoked, about $0.0001 per session on Opus 5. 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 2026-08-30.

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