Testdriver:what Is Testdriver Agent Skill
Reliably test your most difficult user flows
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/testdriverai/testdriverai --skill testdriver:what-is-testdriverThe instruction itself
3 sections, as written by the author<!-- Generated from what-is-testdriver.mdx. DO NOT EDIT. -->
The problem with modern testing tools
Modern testing tools like Playwright are designed to test a single web application, running in a single browser tab using selectors.
However, selectors are often either unreliable or unavailable in complex scenarios, leading to brittle and flaky tests:
| Challenge | Problem | Examples |
|-----------|---------|----------|
| Fast moving teams | Frequently change UI structure, breaking CSS/XPath selectors | Agile teams, startups, vibe-coders |
| Dynamic content | Cannot be targeted with selectors | AI chatbots, PDFs, images, videos |
| Software you don't own | May lack proper accessibility attributes | Other websites, extensions, third-party applications |
| Multi-application workflows | Cannot be tested with web-only tools | Desktop apps, browser extensions, IDEs |
| Visual states | Impossible to verify with code-based selectors | Charts, graphs, videos, images, spelling errors, UI layout |
The TestDriver Solution
TestDriver is a complete testing platform built specifically for handling these scenarios. It consists of a Javascript SDK, hosted infrastructure, and debugging tools that make it easy to write, run, and maintain tests for your most difficult user flows.
Javascript SDK
Here is an example of a TestDriver test that installs a production Chrome extension from the Chrome Web Store and verifies that it appears in the extensions menu:
import { describe, expect, it } from "vitest";
import { TestDriver } from "testdriverai/vitest/hooks";
describe("Chrome Extension Test", () => {
const testdriver = TestDriver(context);
// Launch Chrome with Loom loaded by its Chrome Web Store ID
await testdriver.provision.chromeExtension({
extensionId: 'liecbddmkiiihnedobmlmillhodjkdmb'
});
// Click on the extensions button (puzzle piece icon) in Chrome toolbar
const extensionsButton = await testdriver.find("The puzzle-shaped icon in the Chrome toolbar.");
await extensionsButton.click();
// Look for Loom in the extensions menu
const loomExtension = await testdriver.find("Loom extension in the extensions dropdown");
expect(loomExtension.found()).toBeTruthy();
});
<Tip>vitest is the preferred test runner for TestDriver.</Tip>
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How to use it
Take testdriverai/testdriver:what-is-testdriver from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
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same name cannot sit side by side — one of them will be ignored.