mcpbeat

Testcafe Skill

lambdatest/testcafe-skill

> Generates TestCafe automation tests in JavaScript or TypeScript. Supports local

5k tokens
context cost
the whole folder, loaded on every use
4
files
instructions only
0
copies elsewhere
how many repositories repackaged it
343
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository
npx skills add https://github.com/LambdaTest/agent-skills --skill testcafe-skill

The instruction itself

9 sections, as written by the author

TestCafe Automation Skill

Core Patterns

Basic Test

import { Selector } from 'testcafe';

fixture('Login').page('https://example.com/login');

test('Login with valid credentials', async t => {
    await t
        .typeText('#username', '[email protected]')
        .typeText('#password', 'password123')
        .click('button[type="submit"]')
        .expect(Selector('.dashboard').exists).ok();
});

Selectors

const submitBtn = Selector('button').withText('Submit');
const listItems = Selector('.item').count;
const nthItem = Selector('.item').nth(2);
const filtered = Selector('.item').withAttribute('data-status', 'active');

Page Model

import { Selector, t } from 'testcafe';

class LoginPage {
    constructor() {
        this.usernameInput = Selector('#username');
        this.passwordInput = Selector('#password');
        this.submitButton = Selector('button[type="submit"]');
    }
    async login(username, password) {
        await t
            .typeText(this.usernameInput, username)
            .typeText(this.passwordInput, password)
            .click(this.submitButton);
    }
}
export default new LoginPage();

TestMu AI Cloud

See reference/cloud-integration.md for full cloud setup and shared/testmu-cloud-reference.md for capabilities.

export LT_USERNAME=your_username
export LT_ACCESS_KEY=your_key
npx testcafe "lambdatest:Chrome@latest:Windows 11" tests/

Anti-Patterns

| Bad | Good | Why |

|-----|------|-----|

| await t.wait(5000) | Smart assertions with timeout | Arbitrary delays |

| Deep CSS selectors | Selector().withText() | Fragile |

| No error screenshots | t.takeScreenshot() on failure | Missing debug info |

Quick Reference

| Task | Command |

|------|---------|

| Run all | npx testcafe chrome tests/ |

| Run headless | npx testcafe chrome:headless tests/ |

| Run specific | npx testcafe chrome tests/login.js |

| Multiple browsers | npx testcafe chrome,firefox tests/ |

| Live mode | npx testcafe chrome tests/ --live |

| Screenshot | await t.takeScreenshot() |

| Resize | await t.resizeWindow(1280, 720) |

Deep Patterns

For advanced patterns, debugging guides, CI/CD integration, and best practices,

see reference/playbook.md.

How to use it

Copy the folder

Take lambdatest/testcafe-skill from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.

Install what it needs

The instructions reference npx. Without those the skill loads but fails at the first command.