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Agent skill

Nextjs Supabase Auth

by davila7 in davila7/claude-code-templates

Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route.

MITAuto-check passedBackend & APIs

Install Nextjs Supabase Auth

skills CLI
$ npx skills add davila7/claude-code-templates --skill nextjs-supabase-auth -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install davila7/claude-code-templates nextjs-supabase-auth --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cli-tool/components/skills/development/nextjs-supabase-auth .claude/skills/nextjs-supabase-auth && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
nextjs-supabase-auth
GitHub stars
32k
Used in
4 other repos
Token cost
~346 tokens
SKILL.md length
135 words
Files
1
Skills in repo
478
Repo updated
First seen
Licence
MIT

At a glance

Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route.

  • Works in 5 steps: Use @supabase/ssr for App Router… → Handle tokens in middleware for… → Never expose auth tokens to client… → …
  • : supabase auth next
  • SKILL.md covers Capabilities, Requirements, Patterns and Anti-Patterns, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Nextjs Supabase Auth is an agent skill from davila7/claude-code-templates. Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route.

Its SKILL.md is about 350 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs. It works with Supabase and Next.js. The repository describes itself as: CLI tool for configuring and monitoring Claude Code. The licence is MIT.

When your agent uses it

  • : supabase auth next
  • Authentication next.js
  • Auth middleware
  • Protected route

Example prompts

  • “/nextjs-supabase-auth”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Use @supabase/ssr for App Router integration
  2. Handle tokens in middleware for protected routes
  3. Never expose auth tokens to client unnecessarily
  4. Use Server Actions for auth operations when possible
  5. Understand the cookie-based session flow

What it can do on your machine

Read from SKILL.md and the folder at commit 46b4d8b. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

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

  • Network

    No URLs in SKILL.md.

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

  • Credentials

    Names no API keys, tokens, secrets or passwords.

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

Context cost

Nextjs Supabase Auth loads about 346 tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 135 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~46
When it runs · the whole SKILL.md, loaded when a task matches
~346

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

Auto-check passed

The automated check found no risky patterns in SKILL.md.

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 davila7/claude-code-templates at commit 46b4d8b, republished under its MIT licence (© davila7). 135 words, ~346 tokens.

Download SKILL.mdSave it as .claude/skills/nextjs-supabase-auth/SKILL.md (or your agent's skills folder).
name
nextjs-supabase-auth
description
Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route.
source
vibeship-spawner-skills (Apache 2.0)

Next.js + Supabase Auth

You are an expert in integrating Supabase Auth with Next.js App Router. You understand the server/client boundary, how to handle auth in middleware, Server Components, Client Components, and Server Actions.

Your core principles:

  1. Use @supabase/ssr for App Router integration
  2. Handle tokens in middleware for protected routes
  3. Never expose auth tokens to client unnecessarily
  4. Use Server Actions for auth operations when possible
  5. Understand the cookie-based session flow

Capabilities

  • nextjs-auth
  • supabase-auth-nextjs
  • auth-middleware
  • auth-callback

Requirements

  • nextjs-app-router
  • supabase-backend

Patterns

Supabase Client Setup

Create properly configured Supabase clients for different contexts

Auth Middleware

Protect routes and refresh sessions in middleware

Auth Callback Route

Handle OAuth callback and exchange code for session

Anti-Patterns

❌ getSession in Server Components
❌ Auth State in Client Without Listener
❌ Storing Tokens Manually

Works well with: nextjs-app-router, supabase-backend

© davila7, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in cli-tool/components/skills/development/nextjs-supabase-auth of davila7/claude-code-templates.

Open the folder on GitHubat commit 46b4d8b

Used in 4 other repositories

We found 6 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 4 other GitHub owners. This page covers the copy in davila7/claude-code-templates, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Nextjs Supabase Auth next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Nextjs Supabase Auth compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Nextjs Supabase Auth this skilldavila7/claude-code-templates32k4 repos~346Automated safety check: PassMIT
Supabase Development and Debuggingsupabase/agent-skills2.7k3 repos~3.6kAutomated safety check: PassMIT
Supabasecurvenote/curvenote1705 repos~2.2kAutomated safety check: PassCustom licence
Yalidine Delivery Integrationbighadj22/codflow350—~2.5kAutomated safety check: PassApache-2.0
Documentation LookupKaimingWan/oh-my-kiro107—~616Automated safety check: PassMIT
Docs Guidefivetaku/gptaku-plugins-codex128—~3.5kAutomated safety check: PassMIT

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Works with

Categories

Questions about Nextjs Supabase Auth

What does Nextjs Supabase Auth do?

Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route. Nextjs Supabase Auth is an agent skill from davila7/claude-code-templates.js, login supabase, auth middleware, protected route.

When should I use Nextjs Supabase Auth?

Nextjs Supabase Auth fits situations like: : supabase auth next; authentication next.js; auth middleware; protected route.

How do I install Nextjs Supabase Auth in Claude Code?

Run `npx skills add davila7/claude-code-templates --skill nextjs-supabase-auth -a claude-code`. Or copy the skill folder (cli-tool/components/skills/development/nextjs-supabase-auth in davila7/claude-code-templates) into .claude/skills/nextjs-supabase-auth in your project. Claude Code loads it when a task matches its description.

How do I install Nextjs Supabase Auth in Codex?

Run `npx skills add davila7/claude-code-templates --skill nextjs-supabase-auth -a codex`. Or copy the skill folder (cli-tool/components/skills/development/nextjs-supabase-auth in davila7/claude-code-templates) into .agents/skills/nextjs-supabase-auth in your project. Codex loads it when a task matches its description.

Can I use Nextjs Supabase Auth in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add davila7/claude-code-templates --skill nextjs-supabase-auth -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nextjs-supabase-auth, .gemini/skills/nextjs-supabase-auth, .github/skills/nextjs-supabase-auth and .opencode/skills/nextjs-supabase-auth in your project.

What does Nextjs Supabase Auth need to run?

SKILL.md names no scripts, command-line tools or credentials: Nextjs Supabase Auth is instructions for the agent only.

Does Nextjs Supabase Auth access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Nextjs Supabase Auth safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Nextjs Supabase Auth use?

Nextjs Supabase Auth is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Nextjs Supabase Auth use?

About 346 tokens (SKILL.md is roughly 1.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Nextjs Supabase Auth?

Skills that share tags, products or a category with Nextjs Supabase Auth: Supabase Development and Debugging (supabase/agent-skills, 2.7k stars), Supabase (curvenote/curvenote, 170 stars), Yalidine Delivery Integration (bighadj22/codflow, 350 stars) and Documentation Lookup (KaimingWan/oh-my-kiro, 107 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Nextjs Supabase Auth?

davila7 (a GitHub user) maintains it in davila7/claude-code-templates, which has 32,483 GitHub stars. The repository holds 478 skills in this directory. The repository was last updated on October 9, 2026.

Source: davila7/claude-code-templates on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.