agentmods.dev

testcafe-skill

testcafe-skill is a skill for Claude Code, Codex from LambdaTest/agent-skills. It costs 43 tokens per session (670 once invoked), scanned A, original, MIT.

A TestCafe add-on that generates browser automation tests in JavaScript or TypeScript. TestCafe lets tests open pages, fill fields, click controls, and check results.

In plain words
What is it for?
Use it to test web flows such as login forms with selectors, page models, and visible-element checks.
Why use it?
It removes the need to assemble common TestCafe test structure, selectors, and page models from scratch.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 391repo +4 2d ago A scan SkillSpector: warn 43 tokens original MIT

Good fit Use it to test web flows such as login forms with selectors, page models, and visible-element checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lambdatest/agent-skills/testcafe-skill
View source ↗ LambdaTest/agent-skills agentskillsforall.com
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add LambdaTest/agent-skills --skill testcafe-skill
Clone the repo
git clone --depth 1 https://github.com/LambdaTest/agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for testcafe-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/lambdatest/agent-skills/testcafe-skill/github.svg)](https://agentmods.dev/skills/lambdatest/agent-skills/testcafe-skill)
Your own site
<a href="https://agentmods.dev/skills/lambdatest/agent-skills/testcafe-skill"><img src="https://agentmods.dev/badge/skills/lambdatest/agent-skills/testcafe-skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for testcafe-skill

Your own site · 80×15
<a href="https://agentmods.dev/skills/lambdatest/agent-skills/testcafe-skill"><img src="https://agentmods.dev/badge/skills/lambdatest/agent-skills/testcafe-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 670 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 6 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 73
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 88
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 89
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 90
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 91
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 92
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00043 $0.00670
Opus 5.5 $0.00017 $0.00268
Sonnet 5.5 $0.00009 $0.00134
Haiku 4.5 $0.00004 $0.00067

Measured 2mo ago against content hash cdc7340f6166, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

testcafe-skill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

testcafe-skill/SKILL.md · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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)

Read the full file on GitHub · 100 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 100 lines · 43 tokens per session scan A cdc7340f6166

Subscribe to this mod's changes

testcafe-skill is a skill published in the GitHub repository LambdaTest/agent-skills (391 stars, last pushed 2d ago), licensed MIT. It adds 43 tokens to every session and 670 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Browser automationE2E testingTesting
Related

testcafe-skill compared with skills from other repositories

testcafe-skill next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
testcafe-skillLambdaTest/agent-skillsSkill3912d agoMITA43Claude Code, Codex
cua-driverdavidondrej/skillsSkill4.3kyesterdayMITA68Claude Code, Codex
create-verification-skillget-bb/bbSkill5.0ktodayMITA57Claude Code, Codex
webapp-testinganthropics/skillsSkill188ktodaynoneA35Claude Code
browser-qahashgraph-online/awesome-codex-pluginsSkill1.5ktodayApache-2.0A58Claude Code, Codex
test-electron-appPostHog/posthog-fossSkill728todayMITA112Claude Code
smoke-testSkyvern-AI/skyvernSkill23ktodayAGPL-3.0A50Claude Code, Codex