Supabase Install Auth

What it does

When your agent uses it

• Setting up a new Supabase project
• Installing @supabase/supabase-js
• Configuring environment variables
• Initializing the Supabase client

Example prompts

• “install supabase”
• “setup supabase”
• “supabase auth config”
• “/supabase-install-auth”

Requirements

• Python 3
• Node.js
• Docker
• A credential in SUPABASE_KEY
• A credential in SUPABASE_SERVICE_ROLE_KEY
• Compatibility (from SKILL.md): Designed for Claude Code
• Pre-approved tools (allowed-tools): Read, Write, Edit, Bash(npm:*), Bash(npx:*), Bash(pnpm:*), Bash(pip:*), Bash(supabase:*), Grep, Glob

Workflow steps

3 steps, taken from the step headings in SKILL.md.

1. 1Install the SDK and CLI
2. 2Configure Environment Variables
3. 3Initialize the Client and Verify

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Write
  • Edit
  • Bash(npm:*)
  • Bash(npx:*)
  • Bash(pnpm:*)
  • Bash(pip:*)
  • Bash(supabase:*)
  • Grep
  • Glob

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • npm
  • npx
  • pip
  • supabase

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Links to these hosts (documentation or services it may open):

  • supabase.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • SUPABASE_KEY
  • SUPABASE_SERVICE_ROLE_KEY

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Designed for Claude Code

  From compatibility in the SKILL.md frontmatter.

Context cost

Supabase Install Auth loads about 1.8k tokens when it runs, and up to ~2.4k if it reads all its reference files. Until then it costs about 95 tokens; SKILL.md has 472 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~95

When it runs · the whole SKILL.md, loaded when a task matches

~1.8k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~2.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NoteMentions a .env fileSKILL.md:88

  # .env.local (or .env)

• NoteMentions a .env fileSKILL.md:97

  .env

• NoteMentions a .env fileSKILL.md:98

  .env.local

• NoteMentions a .env fileSKILL.md:99

  .env.*.local

• NoteMentions a .env fileSKILL.md:189

  - `.env.local` containing `SUPABASE_URL`, `SUPABASE_KEY`, and `SUPABASE_SERVICE_ROLE_KEY`

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 472 words, ~1,788 tokens.

name

supabase-install-auth

description

Install and configure Supabase SDK, CLI, and project authentication. Use when setting up a new Supabase project, installing @supabase/supabase-js, configuring environment variables, or initializing the Supabase client. Trigger with "install supabase", "setup supabase", "supabase auth config", "configure supabase", "supabase init", "add supabase to project".

allowed-tools

Read, Write, Edit, Bash(npm:*), Bash(npx:*), Bash(pnpm:*), Bash(pip:*), Bash(supabase:*), Grep, Glob

compatibility

Designed for Claude Code

version

1.54.0

license

MIT

author

Jeremy Longshore <jeremy@intentsolutions.io>

tags

saas, supabase, setup, authentication, sdk

# Install the SDK
npm install @supabase/supabase-js

# For SSR frameworks (Next.js, SvelteKit, Nuxt), also install:
npm install @supabase/ssr

# Install the Supabase CLI (for types, migrations, local dev)
npm install -D supabase

# Install the SDK
pip install supabase

# Install the CLI (alternative: brew install supabase/tap/supabase)
npm install -g supabase

npx supabase --version

# .env.local (or .env)
SUPABASE_URL=https://<project-ref>.supabase.co
SUPABASE_KEY=eyJhbGciOiJIUzI1NiIs...          # anon key — safe for client-side
SUPABASE_SERVICE_ROLE_KEY=eyJhbGciOiJIUzI1...  # admin key — server-side ONLY

.env
.env.local
.env.*.local

// lib/supabase.ts
import { createClient } from '@supabase/supabase-js'

const supabase = createClient(
  process.env.SUPABASE_URL!,
  process.env.SUPABASE_KEY!
)

export default supabase

// lib/supabase-admin.ts
import { createClient } from '@supabase/supabase-js'

export const supabaseAdmin = createClient(
  process.env.SUPABASE_URL!,
  process.env.SUPABASE_SERVICE_ROLE_KEY!,
  {
    auth: {
      autoRefreshToken: false,
      persistSession: false,
    },
  }
)

# lib/supabase_client.py
import os
from supabase import create_client

url = os.environ["SUPABASE_URL"]
key = os.environ["SUPABASE_KEY"]

supabase = create_client(url, key)

// Quick connectivity check
const { data, error } = await supabase.from('_health_check').select('*').limit(1)
if (error && error.code !== 'PGRST116') {
  // PGRST116 = relation does not exist (expected if table doesn't exist yet)
  throw new Error(`Supabase connection failed: ${error.message}`)
}
console.log('Supabase connected successfully')

npx supabase login
npx supabase link --project-ref <your-project-ref>
npx supabase gen types typescript --linked > lib/database.types.ts

import type { Database } from './database.types'
const supabase = createClient<Database>(url, key)

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in skills/.curated/supabase-install-auth of jeremylongshore/tons-of-skills-marketplace.

• SKILL.md
• references/examples.md

Open the folder on GitHubat commit cfae287