cuecards: Skill for Claude Code

.agents/skills/vc-web-testing/SKILL.md

vc:web-testing is a skill for Claude Code from opencue/cuecards. It costs 51 tokens per session (847 once invoked), scanned A, a copy of vc-web-testing, MIT.

A web-testing guide covering automated browser tests, unit tests, performance checks, accessibility checks, and security tests.

In plain words
What is it for?
It is for testing web applications with tools such as Vitest, Playwright, k6, axe, and Lighthouse.
Why use it?
It helps choose and run suitable tests for everything from individual functions to complete user journeys and high traffic.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is opencue/cuecards's own configuration. It tells Claude Code how to work on cuecards itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything cuecards configures →

Reuse

Borrowing it

Nothing to install: this file belongs to opencue/cuecards. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/opencue/cuecards/main/.agents/skills/vc-web-testing/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/opencue/cuecards

Made for: Claude Code.

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 vc:web-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/opencue/cuecards/vc-web-testing.svg)](https://agentmods.dev/skills/opencue/cuecards/vc-web-testing)
Your own site
<a href="https://agentmods.dev/skills/opencue/cuecards/vc-web-testing"><img src="https://agentmods.dev/badge/skills/opencue/cuecards/vc-web-testing.svg" alt="Measured on agentmods" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 847 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.
Origin 95% copy Near-identical to another mod 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 $0.00051 $0.00847
Opus 5 $0.00026 $0.00424
Sonnet 5 $0.00010 $0.00169
Haiku 4.5 $0.00005 $0.00085

Measured 3d ago against content hash 16e235188506, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

vc:web-testing 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 3d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/analyze-test-results.js, scripts/init-playwright.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

This is a copy

95% identical to vc-web-testing — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/vc-web-testing/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.

Web Testing Skill

Comprehensive web testing: unit, integration, E2E, load, security, visual regression, accessibility.

Quick Start

npx vitest run                    # Unit tests
npx playwright test               # E2E tests
npx playwright test --ui          # E2E with UI
k6 run load-test.js               # Load tests
npx @axe-core/cli https://example.com  # Accessibility
npx lighthouse https://example.com     # Performance

Testing Strategy (Choose Your Model)

Model Structure Best For
Pyramid Unit 70% > Integration 20% > E2E 10% Monoliths
Trophy Integration-heavy Modern SPAs
Honeycomb Contract-centric Microservices

./references/testing-pyramid-strategy.md

Reference Documentation

Core Testing

  • ./references/unit-integration-testing.md - Vitest, browser mode, AAA
  • ./references/e2e-testing-playwright.md - Fixtures, sharding, selectors
  • ./references/playwright-component-testing.md - CT patterns (production-ready)
  • ./references/component-testing.md - React/Vue/Angular patterns

Test Infrastructure

  • ./references/test-data-management.md - Factories, fixtures, seeding
  • ./references/database-testing.md - Testcontainers, transactions
  • ./references/ci-cd-testing-workflows.md - GitHub Actions, sharding
  • ./references/contract-testing.md - Pact, MSW patterns

Cross-Browser & Mobile

  • ./references/cross-browser-checklist.md - Browser/device matrix
  • ./references/mobile-gesture-testing.md - Touch, swipe, orientation

Performance & Quality

  • ./references/performance-core-web-vitals.md - LCP/CLS/INP, Lighthouse CI
  • ./references/visual-regression.md - Screenshot comparison
  • ./references/test-flakiness-mitigation.md - Stability strategies

Accessibility & Security

  • ./references/accessibility-testing.md - WCAG, axe-core
  • ./references/security-testing-overview.md - OWASP Top 10
  • ./references/security-checklists.md - Auth, API, headers

Read the full file on GitHub · 100 lines

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. 3d ago First seen · 100 lines · 51 tokens per session scan A 16e235188506

Subscribe to this mod's changes

vc:web-testing is a skill published in the GitHub repository opencue/cuecards (5 stars, last pushed today), licensed MIT. It adds 51 tokens to every session and 847 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to vc-web-testing, differing in 6 lines, and is treated as a copy.

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