cypress-skill

cypress-skill is a skill for Claude Code, Codex from LambdaTest/agent-skills. It costs 99 tokens per session (1,905 once invoked), scanned A, original, MIT.

A guide for creating Cypress tests, which check a website or its parts by controlling a browser, using JavaScript or TypeScript.

In plain words
What is it for?
It helps create end-to-end tests, component tests for React or Vue, and API tests, with instructions for running them locally or in TestMu AI cloud.
Why use it?
It helps you write consistent browser tests without having to remember Cypress setup and command patterns.

Skill for Claude CodeCodex

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

Good fit It helps create end-to-end tests, component tests for React or Vue, and API tests, with instructions for running them locally or in TestMu AI cloud.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lambdatest/agent-skills/cypress-skill
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 cypress-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 cypress-skill

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/lambdatest/agent-skills/cypress-skill"><img src="https://agentmods.dev/badge/skills/lambdatest/agent-skills/cypress-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,905 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: 8 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 32
    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 191
    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 192
    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 193
    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 194
    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 195
    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 196
    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 176
    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 $0.00099 $0.01905
Opus 5 $0.00049 $0.00953
Sonnet 5 $0.00020 $0.00381
Haiku 4.5 $0.00010 $0.00191

Measured 10d ago against content hash e3925ff1a5aa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

cypress-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 10d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/scaffold-project.sh, templates/cypress.config.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

cypress-skill/SKILL.md · 232 lines

How it starts

The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cypress Automation Skill

You are a senior QA automation architect specializing in Cypress.

Step 1 — Execution Target

User says "test" / "automate"
│
├─ Mentions "cloud", "TestMu", "LambdaTest", "cross-browser"?
│  └─ TestMu AI cloud via cypress-cli plugin
│
├─ Mentions "locally", "open", "headed"?
│  └─ Local: npx cypress open
│
└─ Ambiguous? → Default local, mention cloud option

Step 2 — Test Type

Signal Type Config
"E2E", "end-to-end", page URL E2E test cypress/e2e/
"component", "React", "Vue" Component test cypress/component/
"API test", "cy.request" API test via Cypress cypress/e2e/api/

Core Patterns

Command Chaining — CRITICAL

// ✅ Cypress chains — no await, no async
cy.visit('/login');
cy.get('#username').type('[email protected]');
cy.get('#password').type('password123');
cy.get('button[type="submit"]').click();
cy.url().should('include', '/dashboard');

// ❌ NEVER use async/await with cy commands
// ❌ NEVER assign cy.get() to a variable for later use

Selector Priority

1. cy.get('[data-cy="submit"]')     ← Best practice
2. cy.get('[data-testid="submit"]') ← Also good
3. cy.contains('Submit')            ← Text-based
4. cy.get('#submit-btn')            ← ID
5. cy.get('.btn-primary')           ← Class (fragile)

Anti-Patterns

Bad Good Why
cy.wait(5000) cy.intercept() + cy.wait('@alias') Arbitrary waits
const el = cy.get() Chain directly Cypress is async
async/await with cy Chain .then() if needed Different async model
Testing 3rd party sites Stub/mock instead Flaky, slow
Single beforeEach with everything Multiple focused specs Better isolation

Basic Test Structure

describe('Login', () => {
  beforeEach(() => {
    cy.visit('/login');
  });

  it('should login with valid credentials', () => {
    cy.get('[data-cy="username"]').type('[email protected]');
    cy.get('[data-cy="password"]').type('password123');
    cy.get('[data-cy="submit"]').click();
    cy.url().should('include', '/dashboard');
    cy.get('[data-cy="welcome"]').should('contain', 'Welcome');
  });

  it('should show error for invalid credentials', () => {
    cy.get('[data-cy="username"]').type('[email protected]');
    cy.get('[data-cy="password"]').type('wrong');
    cy.get('[data-cy="submit"]').click();
    cy.get('[data-cy="error"]').should('be.visible');
  });
});

Read the full file on GitHub · 232 lines

Files

What ships with it

7 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. 10d ago First seen · 232 lines · 99 tokens per session scan A e3925ff1a5aa

Subscribe to this mod's changes

cypress-skill is a skill published in the GitHub repository LambdaTest/agent-skills (366 stars, last pushed 1mo ago), licensed MIT. It adds 99 tokens to every session and 1,905 once invoked, about $0.0005 per session on Opus 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 2026-08-30.