supabase

supabase is a skill for Claude Code, Codex from dhaupin/vant. It costs 6 tokens per session (348 once invoked), scanned A, original, MIT.

A guide to Supabase, a hosted backend built around PostgreSQL, a relational database. It covers database records, user authentication, live data subscriptions, and deployable edge functions.

In plain words
What is it for?
Use it to connect an application with supabase-js, query or change tables, sign users up or in, subscribe to updates, and deploy edge functions.
Why use it?
It provides common backend building blocks without requiring you to assemble database, login, real-time updates, and server functions separately.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/dhaupin/vant/vant-skill-supabase
Any agent
npx skills add dhaupin/vant --skill vant-skill-supabase
Clone the repo
git clone --depth 1 https://github.com/dhaupin/vant

Made for: Claude Code, Codex.

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 supabase

README.md
[![agentmods](https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-supabase.svg)](https://agentmods.dev/skills/dhaupin/vant/vant-skill-supabase)
Your own site
<a href="https://agentmods.dev/skills/dhaupin/vant/vant-skill-supabase"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-supabase.svg" alt="Measured on agentmods" height="20"></a>
Per session 6 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 348 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00006 $0.00348
Opus 5 $0.00003 $0.00174
Sonnet 5 $0.00001 $0.00070
Haiku 4.5 $0.00001 $0.00035

Measured 5d ago against content hash 49505858d40a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 5d 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.

models/public/skills/vant-skill-supabase/SKILL.md · 93 lines

What it actually says

Supabase

Backend operations.


When To Use

  • PostgreSQL backend
  • Auth needed
  • Real-time data
  • Edge functions

What To Do

1. Connect

# supabase-js
import { createClient } from '@supabase/supabase-js'

const supabase = createClient(
  'https://xxx.supabase.co',
  'public-anon-key'
)

2. Common Operations

Operation What
select Query data
insert Insert data
update Update data
delete Delete data
subscribe Real-time

3. Auth

// Sign up
const { user, session } = await supabase.auth.signUp({
  email: '[email protected]',
  password: 'password'
})

// Sign in
const { user, session } = await supabase.auth.signInWithPassword({
  email: '[email protected]',
  password: 'password'
})

4. Edge Functions

supabase functions serve
supabase functions deploy my-function

Output

## Supabase

| Table | Rows | Status |
|-------|------|--------|
| [name] | [n] | [OK] |

### Functions
- [list]

Role: Supabase Backend
Input: Tables, functions
Output: Working backend

Backend as a service.

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. 5d ago First seen · 93 lines · 6 tokens per session scan A 49505858d40a

Subscribe to this mod's changes

supabase is a skill published in the GitHub repository dhaupin/vant (9 stars, last pushed 5d ago), licensed MIT. It adds 6 tokens to every session and 348 once invoked, about $0.0000 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 2026-08-31.

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