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devtools-testing-guidance

Guidance on selecting the appropriate test suite (Unit, API, or E2E tests) when writing new tests in Chrome DevTools. MUST be used when writing new tests.

80

Quality

100%

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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 content is a tight, highly actionable decision guide with concrete file locations, helper names, and BUILD.gn targets for each suite type, and clear selection criteria. It assumes Claude's competence and avoids unnecessary explanation.

DimensionReasoningScore

Conciseness

The body is lean with no concept-padding (it does not explain what unit tests or CDP are), and the single redirect note to devtools-verification earns its place, matching the 'lean and efficient; every token earns its place' anchor.

3 / 3

Actionability

Gives copy-paste-ready specifics — exact file extensions/locations (`.test.api.ts`, `test/e2e/`), helper names (`TestUniverse`), and exact BUILD.gn targets (`devtools_ui_module("unittests")`, `ts_e2e_library`) — fitting the 'fully executable; copy-paste ready' anchor.

3 / 3

Workflow Clarity

This is a single-purpose selection skill under 50 lines, so the simple-skills note applies; the decision logic is unambiguous (Unit default, API for complex CDP/integration, E2E for journeys) with explicit 'When to use' criteria per branch and no destructive steps requiring validation.

3 / 3

Progressive Disclosure

Under 50 lines with no external bundle files needed; per the guideline such skills score 3 with well-organized sections, and the three numbered suites with consistent sub-bullets plus one clearly signaled reference to devtools-verification are well organized.

3 / 3

Total

12

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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 concise, concrete, and clearly answers both what it does and when to use it, with an explicit trigger clause and a distinct DevTools-specific niche. It reads as third-person and avoids fluff.

DimensionReasoningScore

Specificity

Names three concrete test-suite categories (Unit, API, E2E tests) and the action of selecting among them, matching the 'lists multiple specific concrete actions' anchor rather than the score-2 'some actions' anchor.

3 / 3

Completeness

Answers both 'what' (guidance on selecting the test suite) and 'when' via the explicit trigger 'MUST be used when writing new tests', an equivalent 'Use when...' clause, so it is not capped at 2.

3 / 3

Trigger Term Quality

Natural terms a DevTools contributor would say ('writing new tests', 'Chrome DevTools', 'test suite', 'Unit/API/E2E tests') are present with good coverage, fitting the 'good coverage of natural terms' anchor.

3 / 3

Distinctiveness Conflict Risk

Has a clear Chrome DevTools testing niche and the body distinguishes it from the devtools-verification skill, making it unlikely to trigger for the wrong skill.

3 / 3

Total

12

/

12

Passed

Validation

100%

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

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
ChromeDevTools/devtools-frontend
Reviewed

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