tester

Use when running tests. Shows how to run tests for a single package, including OpenSearch (ddb-os) tests when applicable.

Quality

83%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide

Securityby

Passed

No findings from the security scan

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 an exemplary concise, actionable single-purpose skill: executable commands, a clear decision rule with an explicit source of truth, and a self-maintenance step. Every token earns its place and there is no unnecessary explanation.

Dimension	Reasoning	Score
Conciseness	The body is lean and assumes Claude's competence: just the two commands, a decision rule tied to the storageOps source of truth, and an explicit package list, with no padding or explanation of concepts Claude already knows.	3 / 3
Actionability	It provides fully executable, copy-paste-ready commands ('yarn test packages/<package-name>', 'yarn test:os packages/<package-name>') plus a concrete re-derivation grep command, matching the 'fully executable code/commands' anchor.	3 / 3
Workflow Clarity	As a single-purpose skill, the action is unambiguous: it gives a clear selection logic with a named source of truth (the storageOps key in ci.config.json) and a verification step (grep to re-derive a stale list), satisfying the simple-skill allowance for a top score.	3 / 3
Progressive Disclosure	At under 50 lines with no need for external references, the well-organized sections (DDB-only, OpenSearch, which-command, keeping-up-to-date) meet the simple-skill allowance for a top progressive-disclosure score.	3 / 3
	Total	12 / 12 Passed

Description

67%

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 well-formed with an explicit 'Use when' trigger and a clear statement of what it does, but the trigger term is generic and the capability list is not comprehensive. It reads naturally and uses appropriate third-person voice.

Suggestions

Broaden trigger terms to common variations users would say, e.g. 'Use when running tests, unit tests, or test suites for a single package'.

Add a couple more concrete capabilities to the description (e.g. 'selecting the right test command per package') to lift specificity toward the multi-action anchor.

Add a distinguishing qualifier (e.g. mentioning the storageOps/ddb-vs-ddb-os distinction) to reduce overlap with generic test-running skills.

Dimension	Reasoning	Score
Specificity	It names the domain and some concrete actions ('run tests for a single package', 'OpenSearch (ddb-os) tests') but does not list multiple specific actions, matching the 'names domain and some actions, but not comprehensive' anchor rather than the score-3 multi-action list.	2 / 3
Completeness	It explicitly answers both what ('Shows how to run tests for a single package, including OpenSearch (ddb-os) tests when applicable') and when ('Use when running tests') with an explicit trigger clause, matching the 'clearly answers both what AND when' anchor.	3 / 3
Trigger Term Quality	'running tests' is a natural keyword a user would say, but common variations (e.g. 'unit tests', 'test suite', 'CI tests', 'test:os') are absent, fitting the 'some relevant keywords but missing common variations' anchor.	2 / 3
Distinctiveness Conflict Risk	'running tests' is a broadly applicable trigger that could overlap with many other testing-related skills, fitting the 'somewhat specific but could still overlap' anchor rather than a clear distinct niche.	2 / 3
	Total	9 / 12 Passed

Validation

93%

Warnings & errors only

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

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Repository: webiny/webiny-js
Path: .claude/skills/tester/SKILL.md
Commit: 484553b

Reviewed: about 13 hours ago

Table of Contents

Discovery Implementation Validation

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.