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.
npx skills add manhvann/codexkit --skill web-testinggit clone --depth 1 https://github.com/manhvann/codexkitWrote 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.
[](https://agentmods.dev/skills/manhvann/codexkit/web-testing)<a href="https://agentmods.dev/skills/manhvann/codexkit/web-testing"><img src="https://agentmods.dev/badge/skills/manhvann/codexkit/web-testing.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00051 | $0.00833 |
| Opus 5 | $0.00026 | $0.00417 |
| Sonnet 5 | $0.00010 | $0.00167 |
| Haiku 4.5 | $0.00005 | $0.00083 |
Grade A, and why
ck: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 4d 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.
This is a copy
86% identical to vc-web-testing — 16 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.
How it starts
The opening of the file, as written. The whole thing — 98 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
What ships with it
26 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.
- references/accessibility-testing.md 1.9 KB
- references/api-testing.md 1.8 KB
- references/ci-cd-testing-workflows.md 2.5 KB
- references/component-testing.md 2.4 KB
- references/contract-testing.md 3.3 KB
- references/cross-browser-checklist.md 1.7 KB
- references/database-testing.md 3.3 KB
- references/e2e-testing-playwright.md 2.7 KB
- references/functional-testing-checklist.md 2.7 KB
- references/interactive-testing-patterns.md 2.5 KB
- references/load-testing-k6.md 1.7 KB
- references/mobile-gesture-testing.md 2.1 KB
- references/performance-core-web-vitals.md 3.1 KB
- references/playwright-component-testing.md 2.8 KB
- references/pre-release-checklist.md 1.8 KB
- references/security-checklists.md 2.5 KB
- references/security-testing-overview.md 2.8 KB
- references/shadow-dom-testing.md 1.6 KB
- references/test-data-management.md 2.9 KB
- references/test-flakiness-mitigation.md 1.8 KB
- references/testing-pyramid-strategy.md 2.1 KB
- references/unit-integration-testing.md 2.7 KB
- references/visual-regression.md 2.2 KB
- references/vulnerability-payloads.md 1.3 KB
- scripts/analyze-test-results.js 7.8 KB runs code
- scripts/init-playwright.js 6.5 KB runs code
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.
- 4d ago First seen · 98 lines · 51 tokens per session scan A 5f6f15a6a485
ck:web-testing is a skill published in the GitHub repository manhvann/codexkit (88 stars, last pushed 9d ago), licensed MIT. It adds 51 tokens to every session and 833 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to vc-web-testing, differing in 16 lines, and is treated as a copy.
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