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 personamanagmentlayer/pcl --skill cypress-expertgit clone --depth 1 https://github.com/personamanagmentlayer/pclWrote 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/personamanagmentlayer/pcl/cypress-expert)<a href="https://agentmods.dev/skills/personamanagmentlayer/pcl/cypress-expert"><img src="https://agentmods.dev/badge/skills/personamanagmentlayer/pcl/cypress-expert/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.
<a href="https://agentmods.dev/skills/personamanagmentlayer/pcl/cypress-expert"><img src="https://agentmods.dev/badge/skills/personamanagmentlayer/pcl/cypress-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
SkillSpector: 1 finding, up to low
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 →
- low Excessive Agency · line 65 Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.Fix: Limit the skill's scope to its documented purpose. Remove instructions that enable the agent to perform actions outside its stated functionality.
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 | $0.00068 | $0.01167 |
| Opus 5 | $0.00034 | $0.00583 |
| Sonnet 5 | $0.00014 | $0.00233 |
| Haiku 4.5 | $0.00007 | $0.00117 |
Grade A, and why
cypress-expert 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cypress Expert
Core Concepts
Cypress Framework
- JavaScript-Based - Native JavaScript testing
- Real-Time Reloads - Auto-reloading on file changes
- Time Travel - Debug via snapshots
- Automatic Waiting - No explicit waits needed
- Network Control - Request stubbing and spying
- Screenshots & Videos - Built-in capture
Test Structure
- describe/it - Mocha-style test organization
- Hooks - before, beforeEach, after, afterEach
- Custom Commands - Reusable test logic
- Fixtures - Test data management
- Aliases - Reference DOM elements and requests
- Chains - Fluent command interface
Advanced Features
- Intercepts - Network request control
- Component Testing - React, Vue, Angular components
- Visual Testing - Applitools integration
- Code Coverage - Test coverage reports
- Parallelization - Cypress Cloud parallel execution
- Plugins - Extend functionality
Best Practices
Test Organization
- Keep tests independent and isolated
- Use descriptive test names
- Group related tests with describe blocks
- Use beforeEach for common setup
- Clean up after tests
- Avoid test interdependencies
Selectors
- Prefer data-* attributes for testing
- Use cy.contains() for text-based selection
- Avoid CSS classes and IDs tied to styling
- Use role-based selectors when possible
- Create stable selectors
- Document selector strategies
Assertions
- Use should() for auto-retry assertions
- Chain assertions when appropriate
- Test both positive and negative cases
- Provide meaningful assertion messages
- Use explicit assertions
- Verify multiple aspects
Performance
- Use cy.session() for authentication
- Leverage fixtures for test data
- Mock external API calls
- Minimize page visits
- Use aliases to avoid repeated queries
- Run tests in parallel with Cypress Cloud
Anti-Patterns
Common Mistakes
- Using cy.wait() with arbitrary time
- Not using data-testid attributes
- Overly complex test logic
- Sharing state between tests
- Testing implementation details
- Missing cleanup in afterEach
What ships with it
1 file 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.
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.
- 5d ago First seen · 169 lines · 68 tokens per session scan A fdeca184301e
cypress-expert is a skill published in the GitHub repository personamanagmentlayer/pcl (40 stars, last pushed 3d ago), licensed Apache-2.0. It adds 68 tokens to every session and 1,167 once invoked, about $0.0003 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 2026-09-05.
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