Clerk Astro Patterns

Organization

clerk

clerk-astro-patterns

Astro patterns with Clerk — middleware, SSR pages, island components, API routes, static vs SSR rendering. Triggers on: astro clerk, clerk astro middleware, astro protected page, clerk island component, astro API route auth, clerk astro SSR.

Overview

Publisher	clerk
Repository	`skills`
Skill name	`clerk-astro-patterns`
Stars	83
Forks	5
Bundled files	12
License	MIT
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
12 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by clerk on GitHub. Read the source before you install it.

Installation

Install the Clerk Astro Patterns AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/clerk/skills/tree/main/skills/frameworks/clerk-astro-patterns
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/clerk/skills.git /tmp/skills
mkdir -p .claude/skills
cp -r /tmp/skills/skills/frameworks/clerk-astro-patterns .claude/skills/clerk-astro-patterns

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Clerk Astro Patterns in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Clerk Astro Patterns on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Clerk Astro Patterns is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Astro Patterns

SDK: @clerk/astro v3+. Requires Astro 4.15+.

What Do You Need?

Task	Reference
Configure middleware	references/middleware.md
Protect SSR pages	references/ssr-pages.md
Use Clerk in island components	references/island-components.md
Auth in API routes	references/api-routes.md
Use Clerk with React in Astro	references/astro-react.md

Mental Model

Astro has two rendering modes per page: SSR and static prerender. Clerk works differently in each:

SSR pages — use Astro.locals.auth() which is populated by the middleware
Static pages (export const prerender = true) — Clerk middleware skips them; use client-side hooks in islands
Islands — React/Vue/Svelte components; use useAuth() and other hooks from @clerk/astro/react


Request → clerkMiddleware() → SSR page → Astro.locals.auth()
                                ↓
                         Island (.client) → useAuth() hook

Setup

astro.config.mjs

ts
import { defineConfig } from 'astro/config'
import clerk from '@clerk/astro'

export default defineConfig({
  integrations: [clerk()],
  output: 'server',
})

src/middleware.ts

ts
import { clerkMiddleware, createRouteMatcher } from '@clerk/astro/server'

const isProtectedRoute = createRouteMatcher(['/dashboard(.*)'])

export const onRequest = clerkMiddleware((auth, context, next) => {
  if (isProtectedRoute(context.request) && !auth().userId) {
    return auth().redirectToSignIn()
  }
  return next()
})

SSR Page Auth

astro
---
const { userId, orgId } = Astro.locals.auth()
if (!userId) return Astro.redirect('/sign-in')
---

<h1>Dashboard</h1>

Common Pitfalls

Symptom	Cause	Fix
`Astro.locals.auth` is undefined	Missing middleware	Add `clerkMiddleware` to `src/middleware.ts`
Auth works in dev but not production	`output: 'static'` globally	Set `output: 'server'` or `hybrid` for protected pages
Static page has no auth	Prerendered pages skip middleware	Use `export const prerender = false` or move to island
Island not reactive to sign-in	Missing `client:load` directive	Add `client:load` to the island component

Import Map

What	Import From
`clerkMiddleware`, `createRouteMatcher`	`@clerk/astro/server`
`useAuth`, `useUser`, `UserButton`	`@clerk/astro/react`
Astro components (`<SignIn>`, etc.)	`@clerk/astro/components`

Env Variables


# .env
PUBLIC_CLERK_PUBLISHABLE_KEY=pk_...
CLERK_SECRET_KEY=sk_...

Astro uses PUBLIC_ prefix for client-exposed variables (not NEXT_PUBLIC_).

Docs

Astro SDK

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Clerk Astro Patterns AI skill do?

Why use Clerk Astro Patterns on TypingMind?

Because you install it once and use it with any model. Clerk Astro Patterns is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Clerk Astro Patterns in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/clerk/skills/tree/main/skills/frameworks/clerk-astro-patterns. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Clerk Astro Patterns?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Clerk Astro Patterns?

As many as you like. As long as a model supports skills, you can use Clerk Astro Patterns with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Clerk Astro Patterns AI skill free?

Yes. It is published on GitHub by clerk under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Clerk Astro Patterns

Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Astro Patterns

What Do You Need?

Mental Model

Setup

astro.config.mjs

src/middleware.ts

SSR Page Auth

Common Pitfalls

Import Map

Env Variables

See Also

Docs

Bundled files

Frequently asked questions

Set up your own AI workspace now

Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Astro Patterns

What Do You Need?

Mental Model

Setup

astro.config.mjs

src/middleware.ts

SSR Page Auth

Common Pitfalls

Import Map

Env Variables

See Also

Docs

Bundled files

Frequently asked questions

Related AI Skills

Set up your own AI workspace now