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cross-origin-isolation

Use when reviewing security-sensitive web apps, SharedArrayBuffer usage, worker-heavy apps, editors, or measurement features that require cross-origin isolation. Check both headers and real browser behavior.

79

Quality

100%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

100%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a well-organized, lean overview with concrete actionable guidance, a sequenced review workflow with a verification checkpoint, and proper progressive disclosure via a real references/rule.md file. It respects token budget while remaining instruction-rich.

DimensionReasoningScore

Conciseness

The body is lean, using tight bullets in Quick Reference and brief section descriptions without padding or explaining concepts Claude already knows.

3 / 3

Actionability

Gives concrete, executable guidance — exact header names (COOP, COEP, CORP), a concrete runtime check (`self.crossOriginIsolated === true`), and specific resource-handling directives.

3 / 3

Workflow Clarity

The Check → Fix → Explain → Code Review structure sequences the review process, and the explicit 'Verify self.crossOriginIsolated === true' instruction provides a validation checkpoint before depending on isolated-only features.

3 / 3

Progressive Disclosure

SKILL.md is a concise overview that points to one clearly-signaled, one-level-deep reference (references/rule.md), which exists in the bundle, keeping detailed material out of the main file.

3 / 3

Total

12

/

12

Passed

Description

100%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is specific, well-triggered, and complete, naming concrete domains and actions with an explicit 'Use when...' clause. It is clearly distinct and unlikely to conflict with other skills.

DimensionReasoningScore

Specificity

Lists multiple concrete domains and actions — reviewing security-sensitive web apps, SharedArrayBuffer usage, worker-heavy apps, editors, measurement features — plus 'Check both headers and real browser behavior'.

3 / 3

Completeness

Explicitly states when to use it ('Use when reviewing...') and what it does ('Check both headers and real browser behavior'), satisfying both the what and when with an explicit trigger clause.

3 / 3

Trigger Term Quality

Uses natural terms a developer would say — 'SharedArrayBuffer usage', 'security-sensitive web apps', 'headers', 'browser behavior' — with good coverage of the relevant trigger vocabulary.

3 / 3

Distinctiveness Conflict Risk

The cross-origin isolation / SharedArrayBuffer niche is specific with distinct triggers, making it unlikely to fire for unrelated skills.

3 / 3

Total

12

/

12

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

metadata_version

'metadata.version' is missing

Warning

Total

15

/

16

Passed

Repository
thedaviddias/Front-End-Checklist
Reviewed

Table of Contents

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