🧪 Vitest

3installs

Write and run tests, configure test environments, mock dependencies, and generate coverage reports. Use when setting up vitest.config.ts, writing test suites, mocking modules, or measuring code coverage.

QUICK INSTALL
npx playbooks add skill knoopx/pi --skill vitest

About Vitest

Built for testing & qa workflows, Vitest helps AI coding agents write and run tests, configure test environments, mock dependencies, and generate coverage reports. use when setting up vitest.config.ts, writing test suites, mocking modules, or measuring code coverage.

The 27-word prompt provides structured testing & qa guidance — covering detailed methodology and consistent output formats. Install it in one command.

Use Cases

  • Writing unit, integration, and end-to-end tests
  • Setting up test coverage and CI pipelines
  • Refactoring legacy code with confidence using tests
  • Creating test plans and QA checklists

Example Prompts

Get started Help me use the Vitest skill effectively.

System Prompt (27 words)

Write and run tests, configure test environments, mock dependencies, and generate coverage reports. Use when setting up vitest.config.ts, writing test suites, mocking modules, or measuring code coverage.

Frequently Asked Questions

What is Vitest?

Vitest is a free testing & qa skill for AI coding agents. Write and run tests, configure test environments, mock dependencies, and generate coverage reports. Use when setting up vitest.config.ts, writing test suites, mocking modules, or measuring code coverage.. It provides a specialized system prompt that configures your agent with testing & qa expertise.

How do I use Vitest with Claude Code?

Run npx playbooks add skill knoopx/pi --skill vitest in your terminal to install Vitest into your Claude Code session. It works immediately after installation.

Which AI coding agents work with Vitest?

Vitest is compatible with Claude Code, Cursor, GitHub Copilot, Windsurf, OpenClaw, Cline, and any AI agent that supports custom system prompts or .cursorrules files.

Is Vitest free to use?

Yes, Vitest is completely free and open source. The full source is available on GitHub at https://github.com/knoopx/pi/tree/main/agent/skills/vitest. You only need a subscription to the AI agent you use it with.

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