Clerk Testing

Organization

clerk

clerk-testing

E2E testing for Clerk apps. Use with Playwright or Cypress for auth flow tests.

Overview

Publisher	clerk
Repository	`skills`
Skill name	`clerk-testing`
Stars	83
Forks	5
Bundled files	Instructions only
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.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by clerk on GitHub. Read the source before you install it.

Installation

Install the Clerk Testing 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/features/clerk-testing
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/features/clerk-testing .claude/skills/clerk-testing

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

Use it in TypingMind

Enable Clerk Testing 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 Testing 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 Testing 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.

Testing

Decision Tree

Framework	Documentation
Overview	https://clerk.com/docs/guides/development/testing/overview
Playwright	https://clerk.com/docs/guides/development/testing/playwright/overview
Cypress	https://clerk.com/docs/guides/development/testing/cypress/overview

Mental Model

Test auth = isolated session state. Each test needs fresh auth context.

clerkSetup() initializes test environment
setupClerkTestingToken() bypasses bot detection
storageState persists auth between tests for speed

Workflow

Identify test framework (Playwright or Cypress)
WebFetch the appropriate URL from decision tree above
Follow official setup instructions
Use development-instance keys only (pk_test_* / sk_test_*). If the project has no keys yet, npx clerk@latest init (the Clerk CLI; see clerk-setup) creates a Clerk application and writes development-instance keys to the env file. No Clerk account or Dashboard visit is needed.

Best Practices

Use setupClerkTestingToken() before navigating to auth pages
Use test API keys: pk_test_xxx, sk_test_xxx
Save auth state with storageState for faster tests
Use page.waitForSelector('[data-clerk-component]') for Clerk UI

Anti-Patterns

Pattern	Problem	Fix
Production keys in tests	Security risk	Use `pk_test_*` keys
No `setupClerkTestingToken()`	Auth fails	Call before navigation
UI-based sign-in every test	Slow tests	Use `storageState`

Framework-Specific

Playwright: Use globalSetup for auth state Cypress: Add addClerkCommands({ Cypress, cy }) to support file

Frequently asked questions

What does the Clerk Testing AI skill do?

E2E testing for Clerk apps. Use with Playwright or Cypress for auth flow tests.

Why use Clerk Testing on TypingMind?

Because you install it once and use it with any model. Clerk Testing 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 Testing in TypingMind?

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

Which AI models can use Clerk Testing?

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 Testing?

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

Is the Clerk Testing 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 Testing

Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Testing

Decision Tree

Mental Model

Workflow

Best Practices

Anti-Patterns

Framework-Specific

See Also

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

Testing

Decision Tree

Mental Model

Workflow

Best Practices

Anti-Patterns

Framework-Specific

See Also

Frequently asked questions

Related AI Skills

Set up your own AI workspace now